eLABORATE Mar/Apr 2024

m6 teleskoper blank changer milling unit for Ø 95, 98, 1O6 and 125 mm

SYDNEY 24-25 MAY 2024

NOVOTEL SYDNEY BRIGHTON BEACH

TWO DAYS OF LECTURES AND WORKSHOPS ON DIGITAL DENTISTRY FOR DENTISTS, SPECIALISTS, DENTAL TECHNICIANS AND DENTAL PROSTHETISTS

TWO DAYS OF LECTURES AND WORKSHOPS ON DIGITAL DENTISTRY FOR DENTISTS, SPECIALISTS, DENTAL TECHNICIANS AND DENTAL PROSTHETISTS

TWO DAYS OF LECTURES AND WORKSHOPS ON DIGITAL DENTISTRY FOR DENTISTS, SPECIALISTS, DENTAL TECHNICIANS AND DENTAL PROSTHETISTS

TWO DAYS OF LECTURES AND WORKSHOPS ON DIGITAL DENTISTRY FOR DENTISTS, SPECIALISTS, DENTAL AND DENTAL

REGISTER NOW and SAVE!

SPONSORS

Join us again or for the first time at Digital Dentistry & Dental Technology No 5 for a fun, exciting and fully immersive learning experience with the best of the best in the new age of dentistry. This year’s program will again cover Digital Smile Design • Digital orthodontics • Intraoral scanning • 3D Facial Scanning • Digital implantology • Digital full arch restorations and full mouth rehabilitations • Digital Dentures • 3D Printing • Milling • CBCT • Materials and applications • Software and more with MORE Hands-on Sessions • MORE Advanced Sessions • MORE New Products • NEW Masterclasses... and more! ONLY $440 FOR 2 DAYS OF

REGISTRATION FEES

$880 inc gst INCLUSIONS

VENUE DETAILS

Registration fee includes participation in TWO full days of education (12 CPD hours), all catering and Friday drinks. Multiple lectures and workshops are being run concurrently to allow you to build your own program to suit your specific interests. Price is all inclusive.

PROGRAMME DETAILS FRIDAY 24 MAY 2024

am -

9.00am - 5.00pm - education 5.00pm - 7.00pm - happy hour SATURDAY 25 MAY 2024 9.00am - 5.00pm - education

- education 5.00pm - 7.00pm - happy hour SATURDAY 25 MAY 2024 9.00am - 5.00pm - education 12 HOURS CPD

12 HOURS CPD

Novotel Sydney Brighton Beach - The Grand Parade, Brighton-Le-Sands NSW 2216 - Close to Sydney Domestic and International Airports

Check the website for details of discounted accommodation rates for the conference • Ample parking available at the hotel

Organised by Dentevents™ a division of Main Street Publishing Pty Ltd ABN 74 065 490 655 www.dentevents.com • info@dentist.com.au • Tel: (02) 9929 1900 • Fax: (02) 9929 1999

By Joseph Allbeury

Twenty one years...

The first edition ever of this magazine was the March/April edition, way back in 2004.

Red Dot Design Award for ASIGA Ultra

The first edition of eLABORATE magazine featured such articles as Kulzer trains 27 Premium Partners in Germany; Rayvettie first with new Dentaurum Power Laser; Occupational Health & Safety - the next step; OH&S is one of those things that seems tediously painful - that is until something goes wrong.; Laboratory Accreditation Program - ACDLA (NSW); Sirona introduces 3D to CEREC inLab; The dawn of a new era in denture production; The air we breathe; LabMagic manages workflow and more; Temporary crown for an implant; Bonding the anterior ceramic crown; Accurate shade matching the key to quality and productivity; Laser welding in dental technology; and Screw-retained provisional implant system.

The magazine was published bi-monthly and the first edition spanned just 44 pages. Over the ensuing 21 years, the popularity, and size, of the magazine grew. At its peak, we were publishing 60 pages every two months.

Access to the magazine is available by subscription and it is also included with Australasian Dental Practice magazine, which sees some 10,000 copies in total distributed every two months.

In the ensuring 21 years, we have published hundreds of editions spanning thousands of pages.

The magazine is only possible thanks to our many regular contributors, all of whom have my eternal gratitude... none more so than Terry Whitty, who has been the Technical Editor from Day One and has personally contributed over 160 articles. Terry and many others have tracked the transformation of the dental technology space from analogue to digital in the pages of eLABORATE

The early editions of the magazine features countless articles on tips and techniques for refining age old analogue processes; today, every article features some element of digital dentistry.

And with the digital age, eLABORATE became available online as well as in print and we now publish nine websites. Every article we have published in eLABORATE is referenced in the www.dentalcommunity.com.au website and the majority have full text and images or PDF downloads available.

A final thank you to our many advertisers and supporters, plus everyone who reads our magazines.

Enjoy the edition...

Joseph Allbeury, Editor and Publisher

The brand new ASIGA Ultra 3D printer launched at 3D Printing in Dentistry in Sydney last February has been awarded a 2024 Red Dot Award for Product Design. The Red Dot Award is the world’s most prestigious design award celebrating good design. The Ultra, designed and manufactured in Sydney, Australia has positioned itself as arguably the most advanced dental 3D printer ever. Housing the latest 4K DLP imaging technology alongside the full suite of Asiga’s robust layer monitoring technologies, the Ultra delivers manufacturing certainty but with a new focus for the sector – design. It is clear that Asiga has taken note and listened to their customers to bring to market a product where the end-user is front and centre. You cannot help being drawn to the Ultra. It all starts with their new and beautifully designed user interface which feels like something straight from a market leading tablet/phone manufacturer. Menu navigation, infographics and the responsiveness of the user interface screen all have a high quality feel and draw you in for more. A feature that will most definitely have you hooked is their new touchless entry, an engineering marvel in itself. Asiga surely had a lot of fun with this and with a simple hand-wave gesture, the hood opens effortlessly and is so silent that it leaves you helplessly opening and closing the hood. Once you have satisfied your desire to play with the hood, it is clear that the attention to detail and build quality of the Ultra is nothing short of exceptional. A magnetic build platform, simple material tray clamping, internal lighting and wide range of connectivity options all help in the presentation of a cleverly refined 3D printer for both the dental laboratory and dental clinic. Another key feature to the Ultra is a new infrared heating system which warms materials to 70°C. This opens doors to new polymer technologies where high impact and hardness are key material properties. This is an exciting time for 3D printing and dentistry in general and this new product from Asiga will certainly be turning heads.

For more information on Asiga and these new 3D printers, visit www.asiga.com.

VITA VIONIC DENT

DISC multiColor is suitable for the fabrication of premium dentures using CAD/ CAM technologies.

VITA VIONIC DENT DISC multiColor: A unique combination of quality and aesthetics for digital dentures

Now users can enjoy even more flexibility when it comes to decision-making: VITA Zahnfabrik is expanding its VITA VIONIC SOLUTIONS portfolio with VITA VIONIC DENT DISC multiColor. With this disc, users can mill teeth for full, as well as partial dentures. This means that in the future, they can choose between prefabricated and custom fabricated teeth.

Taking quality and aesthetics to the next level

The new disc impresses with premium quality composite material made from polymethyl methacrylate (PMMA). The teeth milled from this material offer significantly greater abrasion stability than comparable products, thanks to silanised filler material. This allows users to benefit from improved polishing, providing patients with longer lasting dentures. As a result, the VITA VIONIC SOLUTIONS range also offers the outstanding quality that users are familiar with from analog VITA premium teeth.

What’s more, the new VITA VIONIC DENT DISC multiColor range features an integrated shade gradient that offers remarkably natural toothlike aesthetics. This helps users save time, as com-

plex characterisation is no longer required. At the same time, you don’t have to compromise on quality or aesthetics. The combination of a premium quality composite, an integrated shade gradient and support for indications using definitive denture teeth mean that VITA VIONIC DENT DISC multiColor is currently unparalleled on the dental market.

The complete workflow - with VITA

T he new possibilities supported by VITA VIONIC DENT DISC multiColor will also be available in the new VITA VIONIC VIGO tooth database. This will enable users to cover the entire workflow for full and partial digital dentures using VITA VIONIC SOLUTIONS - from setup selection to try-in, fabrication of the tooth base and teeth, to bonding using VITA VIONIC BOND. Even complex tooth setups and oral situations where space is limited are supported, thanks to the new disc. What’s more, VITA products are not tied to a particular system: every user can choose the exact workflow that meets their needs.

More info on the new VITA VIONIC DENT DISC multiColor range, visit www.vita-zahnfabrik.com/vionicdentdisc

Real jaw movements and face morphing on the digital patient:

Real jaw movements and face morphing on the digital patient: Production of functional restorations in only two chairside appointments

The latest technologies and software innovations in terms of patient data acquisition permit the production of functionalised and aesthetic restorations in considerably shorter times. Through a mock-up demo case, this article describes a workflow based on Zirkonzahn patient diagnostic tools and design automations, allowing for the manufacture of precise, individual dental prostheses in only two chairside appointments. A comparison between the produced demo mock-up and the natural teeth is also displayed to show the mock-up’s high level of customisation and naturalness achieved with the workflow.

First chairside appointment

During the first appointment with the patient, the practitioner records the patient’s data and oral situation by taking 2D pictures of the face as well as digital impressions through the intraoral scanner.

After the visit, the dentist sends the recorded data to the dental technician, who creates a virtual patient folder in the archive software, saving and storing all patient information for future usage. Based on the 2D pictures and intraoral scans, the dental technician

designs a first set-up by means of the Smile Creator module included in the Zirkonzahn.Modellier software, in order to create a preview of the potential new smile.

With the Smile Creator, the dental technician can design the tooth setup based on the natural teeth of the patient; alternatively, the virtual libraries of natural tooth sets available in the software can be used. In addition, the dental technician can apply different tooth sizes, display the teeth in a real tooth colour, as well as integrate different reference lines into the 2D pictures for better tooth alignment (e.g. the smile line). The completed setup can then be exported as a 2D or 3D file and saved in the software for future designs.

Second chairside appointment

During the second appointment, the dentist and the dental technician show the digital smile preview to the patient. If the patient is satisfied with the aesthetic result, the dentist continues the treatment according to the restoration type. This demo case for the creation of a mock-up shows the workflow generally used for treating complex cases on implants. In such situations, the dentist employs the following patient diagnostic tools:

Figure 1. Impression-taking with the intraoral scanner.

Figure 4. Capture of the oral situation with the PlaneSystem®

Figure 6. Photo-realistic 3D digitisation of the patient’s physiognomy with the Face Hunter facial scanner.

Figure 3a-b. Creation of a first set-up displaying tooth size, colour and shape.

Figure 2. Registration of patient data into the archive software.

Figure 5. Capture of jaw movements with the PlaneAnalyser II.

Figure 7. Matching of all data for a 3D virtual reproduction of the patient’s oral situation and physiognomy.

• The PlaneSystem® (MDT Udo Plaster), which records patient’s occlusal plane and oral situation in Natural Head Position;

• The PlaneAnalyser II, which detects the patient’s real mandibular movements for a detailed and customised functionalisation of the prosthetics; and

• The Face Hunter 3D facial scanner, for a photorealistic digitalisation of the patient’s face physiognomy.

Such technologies permit the 1:1 reproduction of a patient’s physiognomy and oral situation into the virtual world with no loss of precious information. In this way, the techno-clinical team can continue the workflow with no need for further chairside appointments to perform functional and aesthetics checks.

This is possible thanks to the integration of the recorded information into the Zirkonzahn.Modifier design software. Indeed, by means of a specific software function (“Real Movement”), the dental technician can display with accuracy all mandibular movements recorded with the PlaneAnalyser II (opening, closing, protrusion, retrusion and laterotrusive movements) achieving an optimal functionalisation of the design. Subsequently, with another function (“Face Morphing”), the functional

movements can be associated with the patient physiognomy in order to simulate several face expression (e.g. smiling) and evaluate the restoration in terms of aesthetics. Movements can also be imported into the virtual articulator, which is adjusted automatically in relation to the case, for a possible switch to the analogue workflow with milled or printed models.

At this point, the dental technician sends to the dentist a PDF file including all information concerning the design as well as the software-generated functional movements. After the dentist’s final approval, the dental technician proceeds with the manufacture of the prosthetics.

Delivery to the patient

The patient goes to the dental practice to receive the restoration. No functional or aesthetic changes have to be applied, since all checks were performed on the digital patient by means of the Real Movement and Face Morphing functions.

For more info, visit www.zirkonzahn.com

Figure 8. 3D display and analysis of jaw movements recorded with the PlaneAnalyser II (“Real Movement”)

Figure 10a-b. Natural smile (left) vs with the mock-up (right).

Figure 9. Simulation of face expressions (“Face Morphing”).

INDIVIDUAL MOCK-UP

A COST-EFFECTIVE, NON-INVASIVE AND EFFICIENT METHOD TO PREVIEW THE FINAL RESTORATION – MADE WITH MULTISTRATUM ® FLEXIBLE RESIN

Ultra-thin mock-up made 100 % digitally with Zirkonzahn workflow and produced with Multistratum ® Flexible: a particularly flexible resin with natural colour gradient and high durability, ideal for long-term provisionals and prototypes, from single crowns to full arches. The optimum flexibility of the material reduces the risk of fracture and compensates for possible slightly diverging insertion directions.

ceramic | TECHNIQUES

VITA Easyshade LITE: Precise tooth shade determination is just a click away

Prof. Dubravka Knezović Zlatarić (University of Zagreb, Croatia) has made it her mission to continually improve the shade effect predictability of aesthetic restorations. That’s because this dentist knows that the right shade is one of the most important parameters for patients when judging the quality of their treatment. It’s also why digital shade determination is one of her focus areas. Using this technology, the tooth shade can be analysed and documented for the dental technician so that they can choose the right blanks and carry out appropriate individualisation. With VITA Easyshade LITE, dental practices and laboratories can now benefit from a basic version that is user-friendly and also offers excellent value for money. The spectrophotometer transmits defined light to the dentine core at the touch of a button. In a matter of seconds, the reflected light is recorded by the probe, analysed in the device and the tooth shade is shown on the display in both VITA shade standards. In this interview, Dr Knezović Zlatarić explains the new device and the process, which can be delegated.

What are the overall benefits of digital tooth shade determination using VITA Easyshade technology? What are the challenges where the spectrophotometer can help?

A VITA spectrophotometer generally makes the work of dentists and dental technicians easier. These devices are an incredible asset when it comes to quickly, easily and precisely determining the tooth shade in a variety of clinical situations. Particularly when it comes to single-tooth ceramic restorations such as veneers or crowns in the aesthetic zone. It is now scientifically proven that VITA Easyshade spectrophotometers determine the tooth shade with greater accuracy than the human eye, precisely because this technology isn’t dependent on external factors, such as ambient lighting, a subjective or distorted perception of shade, tired eyes or the general susceptibility of user error.

What is so special about the new VITA Easyshade LITE? What are the strengths of this spectrophotometer and what can users look forward to with the market launch?

Figure 1. VITA Easyshade V and VITA Easyshade LITE.

Figure 2. Prof. Dubravka Knezović Zlatarić, DDM, MSc, PhD.

ceramic | TECHNIQUES

Figure 3. The identical tooth shade of the same tooth on the VITA Easyshade V (right) and VITA Easyshade LITE (left) displays.

Figure

Actually, the name says it all (laughs): According to the Cambridge Dictionary, the adjective “lite” describes things that are easy to understand and enjoy. So, on the one hand, VITA Easyshade LITE is sure to make tooth shade determination easier in dental practices and laboratories. On the other hand, the term “lite” is often used in the food industry to describe lowcalorie products. This version of the spectrophotometer has been slimmed down to the most essential functions for tooth shade determination, enabling great value for the money. Yet it still offers the same precision as VITA Easyshade V, which comes with additional features.

How exactly does VITA Easyshade LITE differ from VITA Easyshade V? What similarities are shared by both spectrophotometers?

As already mentioned, VITA Easyshade LITE is a more simplified version of its big brother, the VITA Easyshade V. They essentially share the same main function; in other words, determining the basic tooth shade of natural dentition and showing the measurement results in the VITA SYSTEM 3D-MASTER and VITA Classical A1-D4 shade standards on the display. The degree to which the specified shade deviates from, or precisely matches these two VITA shade standards, is indicated using a transparent traffic light system. Additional tools for exact numerical shade analysis are not available with VITA Easyshade LITE. In my opinion, however, the essential shade information is much more clearly displayed here.

Can you explain the traffic light system in more detail? How is the tooth shade shown on the display?

In tooth shade determination, it’s not just the numerical result that matters, but also how the tooth shade is indicated in a manner that is understandable to everybody. VITA Easyshade LITE displays the measurement using a very transparent traffic light system that indicates the degree of shade equivalence at a glance. A perfect match with the VITA shade standards is shown as green, an acceptable deviation is yellow and a significant deviation is red. If the measured shade is marked red, i.e., if there is a significant discrepancy compared with the two VITA shade standards, additional information is provided only for targeted modification of the lightness and hue.

Who exactly should use VITA Easyshade LITE? Could a combination of VITA Easyshade LITE and VITA Easyshade V also make sense?

VITA Easyshade LITE is for the day-to-day work of all dentists and dental technicians who wish to precisely determine the basic tooth shade of natural dentition, so as to fabricate ceramic restorations that offer a perfect shade match. If it is necessary in more complicated cases to determine an averaged tooth shade and to break this down numerically according to lightness, chroma and hue in order to choose the right ceramic blank, I would additionally recommend VITA Easyshade V. This is also particularly true if the shade effect of ceramic restorations is to be verified or if changes in the shade of natural dentition are to be monitored during bleaching treatment.

4. Prof. Dubravka Knezović Zlatarić during tooth shade determination using VITA Easyshade LITE.

8 7 5 9 6

Figures 4-5. Tooth shade shown as green: Perfect match with the VITA shade standards. The perfect shade match (green) documented with the corresponding shade tab.

Figures 6-7. Acceptable deviations in shade from the VITA shade standards are shown as yellow on the display. The acceptable shade deviation (yellow) from Figure 6 with the corresponding shade tab.

Figures 8-9. Significant deviations in shade from the VITA shade standards are shown as red. The significant shade deviation (red) from Figure 9 with the corresponding shade tab.

JA ceramic | TECHNIQUES

How is the determination of the tooth shade carried out using VITA Easyshade? Who can use it to determine tooth shade?

Tooth shade determination is incredibly simple with both versions of VITA Easyshade. The probe must simply be placed as flat as possible against the enamel surface with underlying dentine. The measurement button is then pressed and the

tooth shade information is immediately shown on the display. I actually think it’s important that the tooth shade is determined by the person who later also fabricates the restoration and that’s the dental technician. However, everybody involved in the restoration process should know about the process of tooth shade determination and how it is documented. That’s why dentists and dental assistants should certainly be trained too. This is extremely easy to do with the VITA Easyshade LITE.

VITA expands VITA VIONIC Solutions portfolio opening even more possibilities

VITA Zahnfabrik is bringing more new products to market for its VITA VIONIC Solutions portfolio and offering users even more freedom of choice in the future for workflow and materials. Regardless of the hardware and software systems used, this means completely new possibilities in terms of quality, aesthetics and efficiency.

In addition to the products already available, users can choose from a wider range and completely new components in the series including:

VITA VIONIC® DENT DISC multiColor

With thsi new disc, users can mill teeth for partial and full dentures themselves via CAD/CAM. Within the VITA VIONIC Solutions portfolio, you

can now choose between prefabricated or individually created teeth. Thanks to the high-quality composite (inorganically filled PMMA), the new disc is significantly more abrasion-resistant than comparable products. VITA is offering its usual high quality of analog VITA premium teeth for digitally created dentures as well. The integrated shade gradient also makes the VITA VIONIC DENT DISC multiColor unique on the dental market.

VITA VIONIC® BASE DISC HI

The disc for milling the denture base via CAD/CAM comes onto the market with an improved material that is impact-resistant and more durable than its predecessor. In addition, the BASE DISC HI is available in three lively gingiva shades (with a fourth coming) which appear even more natural for full and partial dentures.

VITA

VIONIC®

DIGITAL VIGO Denture Library

VITA is also reorganising its dental database. Users are able to digitally design try-in dentures, denture bases and teeth and then 3D print or mill them. The database is available for the denture modules of 3Shape and soon, exocad. Users can choose from a total of seven predefined setup concepts for partial and full dentures - including cross-bite and the recently added setup concepts for straight setup lingualised, straight setup buccalised and Dutch lingualised occlusion. This means that the VITA VIONIC DIGITAL VIGO denture tooth database enables simple and time-saving digital design and manufacture using all common open CAM and 3D print systems. The denture tooth library for 3Shape is available now and will be available soon for exocad.

More info at vita-zahnfabrik.com/vionic

New packaging designs for VITA CAD/CAM and DISC products

In order to provide even better protection for VITA products and use sustainable packaging materials, the packaging for VITA CAD/ CAM blocks and DISC products have been optimised.

CAD/CAM packaging

Starting in April 2024, the VITA CAD/ CAM blocks will be gradually supplied in standardised folding boxes. This optimisation will reduce the number of packaging variants from 12 to 6. The products will now be differentiated by their unique labeling. The exceptions will be the VITA YZ products over 55 mm, as well as VITA CAD-Waxx and VITA CAD-Temp over 65 mm in height, which will continue to be available in special packaging.

The new block packaging will no longer use foam inserts and will rely instead on a cardboard cavity that offers the prod-

ucts optimised protection. Instructions for use can be accessed digitally via QR codes on the packaging, which will reduce paper consumption.

DISC packaging

Significant improvements have also been made to the DISC packaging. Plastic foils and foam inserts have been replaced by environmentally friendly cardboard and cellulose half-shells, which will result in a significant reduction in waste. In addition, QR codes on the outer packaging will promote the digital availability of instructions for use, which will further reduce paper consumption.

The design of the new slipcases, which are now constructed as closed boxes with a fold-out base, has also been updated and adapted to match the design of the block packaging. The products will also be differentiated via labels, which will reduce the amount of packaging to a minimum.

VAbout VITA Zahnfabrik

ITA Zahnfabrik H. Rauter GmbH & Co. KG is a fourth-generation family business based in Bad Säckingen, Germany. For 100 years, VITA has been developing, producing and distributing innovative, high-quality products and solutions for dental technology and dentistry. Worldwide, more than 600 employees work for VITA Zahnfabrik, with the objective of being closer to users and customers than anyone else. Areas of expertise range from analog and digital shade determination, denture teeth and veneering materials, press ceramics and CAD/CAM materials and furnaces and dental materials. The needs of the user are also the focus of the new development of innovative system solutions for the functional and aesthetic reproduction of tooth structure.

More info at vita-zahnfabrik.com

Figure 1. The packaging for VITA CAD/CAM blocks and DISC products have been optimised.

Right on Point.

• easy and efficient setup, thanks to VITA Easy-Centric

Right on Point.

• easy and efficient setup, thanks to VITA Easy-Centric

• multifunctional in a wide variety of shades and shapes

• easy and efficient setup, thanks to VITA Easy-Centric

• multifunctional in a wide variety of shades and shapes

• convincing results with high reliability and VITA quality

• multifunctional in a wide variety of shades and shapes

• convincing results with high reliability and VITA quality

easy and efficient setup, thanks to VITA Easy-Centric multifunctional in a wide variety of shades and shapes

• convincing results with high reliability and VITA quality

• convincing results with high reliability and VITA quality

Intraoral scanning for Digital Dentures

Workflows for fabricating Full and Partial dentures digitally

SYDNEY - JUNE 21-22 | AUCKLAND - JULY 26-27

Presented by Sam Dias, Dental Prosthetist

This event is both a lecture documenting why you should choose digital dentures today as the optimal solution for your dental practice or denture clinic together with a LIVE systematic run-through of the process for fabricating both full and partial digital dentures. You will be able to follow Sam Dias as he explains the step-by-step process he uses in his four clinics across Sydney every day.

A demonstration of accurate intraoral scanning and prosthetic design ensures that the outcome won’t be compromised while saving time and money for you and your patient.

The session will conclude with a Q&A session discussing options leading to self-design or aided design as well as the finishing and polishing process.

This course will cover the following...

DAY ONE

1. Impression vs Scanning - A discussion and slide presentation comparing intraoral scanning and traditional impressions, including a live scan of dentures will be shown. The scanning process will be shown step-by-step and the many different impression techniques currently used will be reviewed, and details of how these can be carried on to the digital world shown.

2. Clinical workflows for correctly scanning different types of denture cases.

3. Preparing scans before export to fellow colleagues and or labs to minimise errors and patient discomfort, REVIEWS!

4. Adding mesh and articulator adjustment. Combining multiple scans and adjusting the setup of the virtual articulator will be shown.

5. Wizard and model analysis tools explained.

6. Digital denture teeth selection- How to select the correct digital denture teeth library will be discussed as well as the use of the measure tool plus patient notes and extra scans. Denture teeth library options and applications will be discussed.

7. Digital denture teeth setups - Digital denture teeth setup tips and tricks for faster and more effortless setups will be detailed.

8. Denture teeth options, different materials for multiple applications, such as printed, milled and carded.

9. Denture base design - Key principles to bear in mind when designing your denture bases plus a guide to troubleshooting.

DAY TWO

1. Continued denture design with a group discussion and clarification of denture designs.

2. 3D printing - 3D printing techniques plus a guide to material selection and achieving better outcomes.

3. LIVE Carded Teeth modification and milled teeth finishing and tweaking before Bonding.

4. LIVE Carded denture teeth, Milled Teeth and Printed TeethStep-by-step bonding technique with tips and tricks.

5. LIVE Staining technique - Techniques for staining and filling in the gaps.

6. Finishing and polishing - Tips to achieve a great outcome.

7. Discussion + Q&A Session.

ONLINE CPD CENTRE

Answer the questions online at www.dentalcommunity.com.au

To retrieve your FREE Dental Community Login, Call (02) 9929 1900 or email joseph@dentist.com.au

ceramic TECHNIQUES

What are the benefits of the VITA LUMEX AC veneering ceramic? Answers straight from daily laboratory practice!

TQuestion 1. One of the main challenges for veneers day-to-day in the laboratory is...

a. Finding the correct adhesive.

b. Finding the right structural order.

c. Not being concerned about shade.

d. Gypsum product selection.

Question 2. The order for layering is...

a. Enamel, opaque, enamel

b. Opaque, enamel, dentine

c. Opaque, dentine, enamel

d. None of the above

Question 3. Vita Lumex AC tends to be more...

a. Grainy

b. Opaque

c. Fluid

d. Thixotropic

Question 4. Custom shade effects can easily be made with...

a. A toothbrush

b. Glycerine

c. PMMA

d. Vita Akzent Plus stains

Question 5. Retraction cord was placed on tooth...

a. 21

b. 22

c. 45

d. 37

Question 6. Anterior high aesthetic all ceramic restorations were previously dominated by...

a. Lithium Dislilicate

b. Nano filled polymers

c. PMMA

d. Quartz

Question 7. At first monolithic zirconia restorations were considered...

a. Highly aesthetic

b. Better looking than real teeth

c. Not highly aesthetic

d. Better looking than Lithium Disilicate

Question 8. Multilayer zirconia has...

a. Improved the aesthetics greatly

b. Not improved aesthetics at all

c. Is not widely used now

d. None of the above

Question 9. The layering ceramic used was...

a. None

b. Self-made

c. Crushed feldspar with nothing added

d. IPS e.max

Question 10. Zirconia exhibits how many distinct forms based on temperature ranges...

a. 2

b. 4

c. 1 d. 3

INSTRUCTIONS:

AMM-520

5-axis wet and dry milling, full denture production, and multi-material processing.

replacement warranty.

All materials

Create full dentures, Titanium frames and abutments, CoCr frames and copings, Zirconia, PMMA, glass ceramics, PEEK, HPP, and hybrid composite restorations with ease and precision.

Wet & dry hybrid

Multi-process, 5-axis simultaneous & 90-degree milling.

What are the benefits of the VITA LUMEX AC veneering ceramic? Answers straight from daily laboratory practice!

The dentist and dental technician Dr Jorge Carro Juárez (Panotla, Tlaxcala, Mexico) provides a one-stop shop for patient treatment, which is why he’s the ideal choice for complex total restorations with highly aesthetic requirements. When fabricating restorations, his goal is to replicate the natural appearance of dentition, while at the same time meeting the desires of the patient. No matter what substructure material: he wants to stay as close to natural dentition as possible, while taking all individual details into consideration. The key to a natural appearance is his carefully planned and coordinated veneering concept, in combination with the universal veneering ceramic VITA LUMEX AC (VITA Zahnfabrik). In this interview, he provides valuable insights into how he integrates his restorations as seamlessly as possible in the oral environment.

What challenges do you see with regard to ceramic veneers in your daily laboratory practice and how does VITA LUMEX AC help you to meet these challenges?

The challenge I face every day is developing a layering protocol; in other words, knowing what material belongs where and finding the right structural order.

Figure 1. A 65-year-old patient was unhappy with her VMK crown on tooth 21.

Figure 2. Precise tooth shade determination was also performed digitally using VITA Easyshade V.

In addition, the correct dimensioning in depth and on the surface is also crucial. Thanks to VITA LUMEX AC, the basic tooth shade itself isn’t complex at all, since the veneering ceramic offers absolute shade stability and is precisely adapted to the VITA shade standards. This means that if I detect the shade A2 using the VITA shade guide, I will get exactly this original VITA A2 with VITA LUMEX AC. Another benefit for most users is the freedom to choose between both shade standards - VITA classical A1-D4 and VITA SYSTEM 3D-MASTER. When determining the tooth shade, I also always work in combination with the VITA Easyshade V spectrophotometer. Digital shade determination is highly precise and incredibly simple to use.

JA JC

How would you describe your layering protocol with VITA LUMEX AC? Do you have a general approach in this regard?

VITA LUMEX AC basically provides the shade for conventional layering using OPAQUE DENTINE, DENTINE and ENAMEL with absolute precision. Effect materials are used to provide individual characterisation. However, to prevent deviations from occurring, usage should be controlled rather than excessive. This is ultimately the only thing that users can control in terms of shade effect. I have created a guide for everyday work that enables me to use a balance between translucent ENAMEL clear and masking OPAQUE DENTINE. Using these two materials, I can control translucency and establish the required translucency gradient. Interestingly enough, I have realised that the degree of opacity of VITA LUMEX AC materials directly correlates with the amount of fluorescence. That’s why, using the shade guide that I developed myself, it is also possible to determine different degrees of fluorescence and to set these accordingly.

Figure 3. The crown was slit as part of the new restoration.

Figure 4. The condition of tooth 21 after removal of the crown, post prep and positioning of the thread prior to taking the impression.

Figure 5. A zirconia substructure was fabricated and fitted using CAD/CAM technology.

Figure 6. The basic tooth shade was established at depth through a washbake.

You previously used VITA VM 9 for veneering. What was it like switching to VITA LUMEX AC? How are you able to control effects and translucency?

Not a lot has really changed in terms of handling. In terms of the veneering concept, VITA LUMEX AC works with OPAQUE DENTINE, marking a return to familiar approaches. The VM 9 veneering system, on the other hand, uses BASE DENTINE. It didn’t take me long to get used to the small number of nuances

Figure 7. Layering of the morphologically complex dentine core using VITA LUMEX AC DENTINE.

Figure 8. It was possible to master the morphological challenge thanks to microinterlocking of the ceramic particles.

Figure 9. The margins and the incisal area were built up using translucent enamel material.

Figure 10. The result after initial dentine firing on the model.

that were new with VITA LUMEX AC. I now also can use VITA LUMEX AC to create the veneer that I used to fabricate using VITA VM9. The veneering ceramic offers special effect materials, along with the ability to create custom shade effects by mixing them with the VITA AKZENT Plus stains. A natural and lifelike effect largely depends on the degree of translucency. The translucency can be intensified in combination with ENAMEL clear. In this way, users are not restricted in how they simulate tooth substance to create vitality.

Figure 13. The incisal view clearly shows how precise work can be done with VITA LUMEX AC.

Figure 14. Detailed reproduction of the complex morphology after firing and finalisation.

Figure 11. Using the brush, detailed modification of the OPAL TRANSLUCENT layering was possible.

Figure 12. The crown after layering and modelling were completed, prior to final firing.

ceramic | TECHNIQUES

“I had VITA LUMEX AC under control right from the start. Anybody with a little experience can handle this creamy, yet more granular veneering ceramic...”

JA JC

What properties does VITA LUMEX AC veneering ceramic offer for modelling? How stable are the results when it comes to firing?

I had VITA LUMEX AC under control right from the start. Anybody with a little experience can handle this creamy, yet more granular veneering ceramic. Yet veneering with VITA LUMEX AC is not difficult; I can achieve the same effects as I previously did with VITA VM 9. Modelling is the result of the interplay between different modelling liquids, ceramic materials and the skill of the user. For the right consistency, I also use a little VITA INTERNO modelling liquid, which is why I need to extend the pre-drying time accordingly. Generally, the veneering ceramic is very stable. Once placed, small portions remain in situ without mixing inadvertently. With targeted pressure using the brush, a portion of ceramic can be subsequently modified at any time. So it’s easy to get used to this veneering ceramic quickly, without the end result being compromised.

About Dr Jorge Carro Juárez

Dr Jorge Carro Juárez studied at the Faculty of Dentistry of the Autonomous University of Tlaxcala, Mexico from 1994-1999. He completed a Postgraduate degree in Oral Rehabilitation in 2008 from the Universidad Veracruzana, Mexico and he also has a Diploma in Functional Occlusion from the Autonomous University of Tlaxcala. Dr Jorge Carro Juárez is currently Professor of fixed and removable prostheses at the autonomous university of Tlaxcala, Mexico.

Figure 15. Finely modelled details (cervical view).

Figure 16. Unusually pronounced morphology of 11 and 21 (lateral view).

Figure 17. The degree of fluorescence of VITA LUMEX materials can be controlled through their correlating opacity.

Figure 18. The absolute shade fidelity of the reproduction result at tooth 21 after adhesive seating.

One for All Ceramics and more.

One for All Ceramics and more.

One for All Ceramics and more.

Zirconia

Zirconia

Zirconia

Lithium disilicate

Lithium disilicate

Lithium disilicate

Feldspar ceramic

Feldspar ceramic

Feldspar ceramic

Titanium

Titanium

Titanium

VITA LUMEX® AC

VITA LUMEX® AC

VITA LUMEX® AC

A real multitalent.

A real multitalent.

• For all conventional ceramic and titanium frameworks

A real multitalent.

• For all conventional ceramic and titanium frameworks

• For all techniques from micro veneering to refractory veneers

• For all techniques from micro veneering to refractory veneers

• For all conventional ceramic and titanium frameworks

• For all precise e ects stable in layering and firing

• For all precise e ects stable in layering and firing

• For all techniques from micro veneering to refractory veneers

• For all precise e ects stable in layering and firing

dentevents presents...

Infection Control BOOT CAMP

29 VIDEOS - 8+ HOURS OF EDUCATION

Presented by Emeritus Professor Laurence Walsh AO BDSc, PhD, DDSc, GCEd, FRACDS, FFOP (RCPA), FFDT (RCS Edin)

8

Learn from Australia’s leading authority on infection prevention and control in dentistry about recent changes in infection control including from the Dental Board of Australia (July 2022), the ADA (4th edition guidelines August 2021 and the ADA Risk management principles for dentistry during the COVID-19 pandemic (October 2021)), the new guidelines from NHMRC (May 2019), Hand Hygiene Australia (Sept 2019) and the CDNA (Dec 2018) as well as recent changes in Australian Standards and TGA regulations that are relevant to infection control. The course provides a summary of how those changes interlink with one another and also covers practical implementation of the new requirements and what it means for everyday dental practice. Hear about the why and the how and keep up-to-date with the changes that are happening.

COURSE TOPICS

This one day course will cover changes in regulations and guidelines from 2018 to 2022 including:

n Risk-based precautions.

n Hand hygiene and hand care practices.

n Addressing common errors in personal protective equipment.

n Biofilm reduction strategies.

n Efficiency-based measures to improve workflow in instrument reprocessing and patient changeover.

n Correct operation of mechanical cleaners and steam sterilisers.

n Wrapping and batch control identification.

n Requirements for record keeping for instrument reprocessing.

n Correct use of chemical and biological indicators.

Laurie Walsh is a specialist in special needs dentistry who is based at the University of Queensland in Brisbane, where he is an emeritus professor. Laurie has been teaching and researching in the areas of infection control and clinical microbiology for over 25 years and was chief examiner in microbiology for the RACDS for 21 years. His recent research work includes multiple elements of infection control, such as mapping splatter and aerosols, COVID vaccines and novel antiviral and antibacterial agents. Laurie has been a member of the ADA Infection Control Committee since 1998 and has served as its chair for a total of 8 years, across 2 terms. He has contributed to various protocols, guidelines and checklists for infection control used in Australia and represented dentistry on 4 committees of Standards Australia and on panels of the Communicable Diseases Network of Australia and of the Australian Commission on Safety and Quality in Health Care.

REGISTRATION

n On-Demand access to 29 Online Learning Videos (Over 8 hours of education).

n Watch and re-watch at your leisure 24/7

n Online Learning Companion Booklet.

n Suggested Reading Material Booklet.

n Online Questionnaire to earn 8 Hours of CPD.

Making ordinary extraordinary - Part 1

By Dr Andrea Kim, DDS and Kyungsik Park, dT

In daily dental practice, achieving consistent and reliable outcomes, especially in anterior aesthetic cases where patients have high expectations, is no small feat. Transforming the ordinary into the extraordinary requires several factors. A dentist’s well-conceived treatment plan, combined with manual dexterity and a flawless work environment—in close collaboration with a dental technician—are crucial for successful treatment. However, with the introduction of innovative materials, the practice can elevate to truly exceptional levels.

The introduction of aesthetic zirconia products has revolutionised the field of anterior aesthetics, previously dominated by the all-ceramic lithium disilicate. Initially, zirconia was layered for anterior or served as a framework for posterior restorations due to its inherent properties.

However, to mitigate complications such as chipping, fracturing or delamination of the overlaying glass ceramic material, there was a growing demand for full zirconia crowns. This led to the introduction of the first-generation monolithic zirconia crown, crafted from 3 mol% yttrium oxide (3Y-TZP).1

These zirconia products not only offer higher flexural strength but also necessitate less tooth reduction, all while maintaining a natural shade appearance. This use of zirconia benefits both dentist and dental technician, simplifying cementation, staining, cut-back and layering techniques.2

At first, monolithic zirconia restorations were not considered aesthetically acceptable due to their opaqueness, despite possessing excellent mechanical and physical properties. With the introduction of various zirconia materials, especially gradient multilayered zirconia, there has been a significant improvement in zirconia’s translucency.3

ceramic | TECHNIQUES

The all-round disc for a wide variety of Description The specialist disc for the efficient fabrication of applications and techniques natural-looking crowns

incisal: 5Y-TZP

dentine: 3Y-TZP

Class of material

incisal: 5Y-TZP

dentine: 4Y-TZP

BL1, BL2, BL3, BL4, A1, A2, A3, A3.5, A4, B1, Shade BL1, BL2, BL3, BL4, A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4

16 mm, 20mm, 25mm

650 MPa (incisal)

1200 MPa (dentine)

B2, B3, B4, C1, C2, C3, C4, D2, D3, D4

Disc thickness (ø 98.5mm) 14mm, 16mm, 20mm

Flexural strength

>5.0 MPa*m1/2 (dentine) Fracture toughness

650 MPa (incisal)

850 MPa (dentine)

>3.6 MPa*m1/2 (dentine)

Anterior tooth monolithic: 0.8mm Minimum wall thickness Anterior tooth monolithic: 0.8mm

Posterior tooth monolithic: 1.0mm (crown)

• Crowns and crown copings

• 3-unit bridges and bridge frameworks Applications

• 4-unit and multi-unit bridges and bridge frameworks with maximum 2 pontics

• Crowns and bridges on natural teeth and implants

• Staining and glazing

Recommended

• Brush infiltration with LT Colouring fabrication

• Cut-back techniques

• Layering

Zirconium dioxide, also known as zirconia, exhibits polymorphic transformation with three distinct forms based on temperature ranges: the monoclinic phase (m-ZrO2) up to 1170°C, the tetragonal phase (t-ZrO2) from 1170°C to 2370°C and the cubic phase (c-ZrO2) beyond 2370°C. To stabilise the tetragonal and cubic phases of zirconia at room temperatures, yttrium is introduced. A composition known as 3Y-TZP, which stands for 3 mol% Yttria-stabilised tetragonal zirconia polycrystal, consists entirely of the tetragonal phase. While it offers impressive strength, its lack of translucency makes it unsuitable for aesthetic zones. By increasing the yttria content, the zirconia’s translucency improves, as seen with 5Y-TZP, which contains 5 mol% yttria and is 50% tetragonal, offering greater transparency but at the expense of some mechanical strength. Meanwhile, 4Y-TZP, comprising 75% of the tetragonal phase, presents a balanced compromise between translucency and strength.2

Currently, multilayered zirconia falls into two primary categories: monophase and multiphase.3 While the monophase consists of a single zirconia phase, the latest generation of Ivoclar’s IPS

Posterior tooth monolithic: 1.0mm

• Crowns

• 3-unit bridges with max. 1 pontic

• Polishing

• Staining and glazing

• Cut-back

e.max® ZirCAD Prime introduces a distinct approach. This product uniquely combines two different zirconia phases: a blend of 3Y-TZP with 5Y-TZP. It is meticulously engineered to marry the robust strength of the 3Y-TZP dentine layer with the captivating aesthetics of the 5Y-TZP incisal layer. A proprietary “gradient technology” is used to seamlessly transition between these two materials without any visible layers. The result is a striking flexural strength value of 1200 MPa in the dentine area.4 The second product of this family, on the other hand, IPS e.max ZirCAD Prime aesthetic, featuring with an incisal layer made of 5Y-TZP and a dentine layer made of 4Y-TZP, possesses a slightly reduced flexural strength of 850 MPa compared to Prime. However, it compensates by delivering crowns with enhanced translucency (Figures 1-2).5

In this article, three cases will be presented: the first case will showcase the utilisation of IPS e.max ZirCAD Prime, the second will use both IPS e.max ZirCAD Prime and IPS e.max Press and the third will focus on IPS e.max ZirCAD Prime aesthetics. The emphasis will be on how these products consistently yield superior outcomes in terms of both strength and aesthetics.

Figures 1-2. Comparison of IPS e.max® ZirCAD Prime4 and IPS e.max® ZirCAD Prime aesthetic.6

IPS e.max® ZirCAD Prime

IPS e.max® ZirCAD Prime Esthetic

ceramic | TECHNIQUES

Case Study 1

A36-year-old male patient presented with concerns regarding the porcelain-fused-to-metal (PFM) crowns on his maxillary central and lateral incisors. His primary motivation for seeking intervention was a recent chip on the right central incisor, further compounded by his dissatisfaction with the overall aesthetics. Not only did the crowns lack congruence with the gingival architecture, but the gingiva itself also showed evident inflammation. This was manifested by swelling, a lack of stippling and an atypical reddish-blue hue. Adding to the aesthetic concerns was the crown’s opaque colouration and the unsightly dark shadow cast by the underlying metal framework, which was noticeable at the gingival margin (Figure 3).

Planning

Initiating the process with the fabrication of a provisional crown was imperative. Not only does it act as a blueprint for the final restoration, but it’s also crucial for aesthetic evaluation.6 The importance of gingival contour rehabilitation in aesthetic areas is highlighted by a study from Liebart MF, showing that 43.57% of 576 patients had visible gingival exposure during a smile.7 To achieve superior final restorations and to restore gingival health and refine the gingival contour using top-grade temporary restorations is essential.8 Another reason for the provisional crowns is to provide the patient with a temporary solution if the treatment extends, especially considering potential needs like retreating the root canal therapy or core buildup (Figure 4).

For the new crowns, the decision was made to use all-ceramic crowns. IPS e.max ZirCAD Prime was the preferred material for the new restorations, given the patient’s bruxism tendencies, observable generalised attrition in surrounding dentition and the unparalleled strength and aesthetics the material promises.

Clinical treatment

Following the removal of the PFM crowns, a thorough examination of the abutment teeth was conducted to check for residual infections. It was observed that all abutment teeth were non-vital and root canal treated. Notably, teeth 21 and 22 displayed discolouration in contrast to teeth 11 and 12 (Figure 5).

Insufficient axial reduction in the original abutment teeth led to a pronounced contour of the existing crowns. This aberrant contour was identified as a likely contributor to the observed gingival inflammation and loss of stippling. In the case of this patient, the gingival line of tooth 12 was noticeably coronal compared to tooth 22, highlighting the need for intervention (Figure 6).

To resolve these concerns, the margins were modified to sit below the free gingival margin and were further refined. Temporary crowns made of polymethyl methacrylate (PMMA, were then relined and carefully polished at the margins.

When fabricating these provisional crowns, it was essential to establish an optimal emergence profile that reflected the gingival contour. A contour that is too pronounced might lead to gingival recession, whereas an insufficient one could trap food particles. The tissue biotype, be it thick or thin, was crucial in guiding these adjustments.9 Taking all these factors into consideration, the

Figure 3. Intraoral view of the initial visit.

Figure 5. After the removal of the old restorations, the teeth were prepped with a chamfer margin.

Figure 4. Provisional crowns on maxillary incisors.

Figure 6. The maxillary incisors underwent prep refinement and non-vital bleaching was performed on teeth 21 and 22.

cervical contour of the PMMA was gradually relined and adjusted in the oral cavity over several weeks. This process aimed to prevent the invasion of the biological width and to monitor the soft tissue’s biologic response.

After the positive outcome was achieved with the provisional crown, a final crown was produced. Such a proper use of PMMA helps prevent gingival recession and restore scalloped and knifeedged abutting teeth.12 The utilisation of PMMA along with periapical x-ray served the purpose of reconstructing the lost and inflamed papilla and an appropriate embrasure space was created with a correct contact point and to obtain the ideal contour. This adjustment aimed to encourage the growth of the papilla, which typically occurs when the distance between the contact point and the bone crest measures 5mm or less.10

After the initial preparation, the discolouration of #21 and #22 became evident. Consequently, non-vital bleaching was performed before taking a final impression.

Fabrication of the crowns in the laboratory

To fabricate the prosthesis, IPS e.max ZirCAD Prime (Ivoclar) was utilised along with the layering ceramic IPS e.max Ceram (Figure 9). Due to the patient’s strong bite and previous ceramic fractures in restorations, a decision was made to retain the lingual side as a zirconia core while performing a labial facing to enhance strength. The build-up process involved applying the dentine layer, followed by the application of mamelon powder (salmon) to further characterise the mamelon shape after the cut back. Subsequently, Opal Effect 1 powder and T1 (Transpa Incisal) powder were employed for layering and firing the incisal area. A secondary layer was added using Opal Effect 1 powder to contour the prosthesis and Opal Effect 2 was applied to the mesial and distal area of the crowns. Finally, glazing paste and liquid were applied for a glossy finish and mechanical polishing was performed to achieve the desired outcome (Figures 8-16).

Figure 7. IPS e.max ZirCAD Prime Disc.

Figure 8. Design for labial facing.

Figure 11. After the 1st bake.

Figure 14. Contour designing on the model.

Figure 9. IPS e.max Ceram for dentine build-up.

Figure 12. The 2nd build-up using IPS e.max Ceram OE1.

Figure 15. Pre-glaze stage.

Figure 10. OE1, OE2, TI Powder are used for contouring and creating mamelons.

Figure 13. After the 2nd bake.

Figure 16. Completed look on the model.

Figure 17. IPS e.max ZirCAD Prime crowns are tried in.

Figures 19a-b. Right and left dentofacial views of a smile.

Figure 18. Within a few weeks, the interdental papilla has adequately filled the space between the incisors.

Figure 20. Natural appearance of the crowns in relation to the lip.

Figure 21. One-year follow-up.

Figure 22. Still in perfect shape and appearance.

ceramic | TECHNIQUES

Result

The crowns delivered a visually pleasing result, harmonising seamlessly with the healthy pink gingiva and lacking the dark shade often associated with crowns. Additionally, an ideal gingival structure was achieved, characterised by sharpedged gingival margins, interdental grooves and cone-like interdental papillae.11 Given their high strength, these crowns are anticipated to endure the patient’s grinding habit, ensuring both durability and longevity (Figures 17-23).

Cases 2 and 3 will appear in Part 2 of this article.

About the authors

Dr Andrea Kim, DDS is a general dentist at Global Dental Clinic in Seoul, South Korea.

Kyung-Sik Park is a dental technician who trained at Daejeon Health Sciences College, Korea and Goldman Dental Laboratory in Germany. He has lectured at the Ivoclar International Meeting in Liechtenstein and has been published internationally in leading dental technology journals including Dental Dialogue and Dental Labor. He is President of Natural Line Dental Laboratory in Seoul, Korea; Director of the Natural Line Clinical Research Centre; and an Ivoclar Korea Instructor.

References

1. Bruhnke, M., Awwad, Y., Wolf-Dieter Müller, Florian Beuer, & Schmidt, F. (2022). Mechanical Properties of New Generations of Monolithic, Multi-Layered Zirconia. Materials, 16(1), 276–276. https://doi.org/10.3390/ma16010276

2. Singhal, S. (2020). IPS e.max ZirCAD Prime A New Era in Dental Ceramics. Aesthetic Dentistry, 19(1), 34–37. https://adentmag.com/ips-e-max-zircad-prime

3. Duarte jr., S., Clavijo, V., Clavijo, W., & Phark, J.-H. (2022). Quintessence of Dental Technology 2021/2022: Vol. Volume 44 (1st Edition, pp. 46–58).

4. Ivoclar, IPS e.max ZirCAD Prime Brochure, 2023.

5. Ivoclar, IPS e.max ZirCAD Prime Esthetic Brochure, 2023.

6. Derbabian, K., Marzola, R., Donovan, T. E., Cho, G. C., & Arcidiacono, A. (2000). The Science of Communicating the Art of Esthetic Dentistry. Part II: Diagnostic Provisional Restorations. Journal of Esthetic and Restorative Dentistry, 12(5), 238–247. https://doi.org/10.1111/j.1708-8240.2000.tb00230.x

7. Marie-Françoise Liébart, Fouque-Deruelle, C., Santini, A., Dillier, F.-L., Virginie Monnet-Corti, Jean-Marc Glise, & A Borghetti. (2004). Smile Line and Periodontium Visibility. Periodontal Practice Today, Vol. 1(Issue 1), p17-25.

8. Mizrahi, B. (2019). Temporary restorations: the key to success. British Dental Journal, 226(10), 761–768. https://doi.org/10.1038/s41415-019-0360-1

9. Rancitelli, D. (2017). Healing and remodeling of connective tissue graft around implants with poor keratinized mucosa. Influence of provisionalization timing (delayed vs immediate) using BOPT abutments. A clinical observational controlled pilot study. https:// air.unimi.it/retrieve/dfa8b997-8c61-748b-e053-3a05fe0a3a96/phd_unimi_R10456.pdf

10. Tarnow, D. P., Magner, A. W., & Fletcher, P. (1992). The Effect of the Distance From the Contact Point to the Crest of Bone on the Presence or Absence of the Interproximal Dental Papilla. Journal of Periodontology, 63(12), 995–996. https://doi.org/10.1902/jop.1992.63.12.995

11. Chu, S. J., Tan, J. H-P., Stappert, C. F. J., & Tarnow, D. P. (2009). Gingival Zenith Positions and Levels of the Maxillary Anterior Dentition. Journal of Esthetic and Restorative Dentistry, 21(2), 113–120. https://doi.org/10.1111/j.1708-8240.2009.00242.x

12. Kinsel, R. P., Pope, B. I., & Capoferri, D. (2015). A Review of the Positive Influence of Crown Contours on Soft-Tissue Esthetics. Compendium of Continuing Education in Dentistry, 36(5), 352–357.

Figure 23. With Andrea Kim, DDS (left), patient (middle) and Kyungsik Park dT (right).

Creating splint occlusion using the Occluform 3

By Peter Herring, Adv Dip Dent Tech, ACCDP

The addition of the Occluform 3 to any of the Erkoform 3 series rapid vacuum units enables the simultaneous imprinting of opposing occlusion during the thermoforming process. Beyond the simple indentation of the opposing dentition on the appliance, this technique offers opportunities for precise and targeted manipulation of the thermoforming material’s occlusion, especially useful for occlusal splints.

This article shows some of these basic manipulations and techniques. These are all carried out at the stage when the thermoformed material retains a malleable, hot plastic state immediately following the forming process.

Creating an occlusal plane with point contacts

Figure 1a. Models (class I) articulated within the Occluform 3. For this case, we will create a posterior occlusal plane with point contact across the arch.

Forming canine guidance

Figure 1b. A polyethylene foil, cut with a straight edge (Erkolen 1.0mm - 511210) is placed to cover the posterior segments of the hot newly formed foil.

Figure 1d (left). Open the Occluform 3, remove the PE foil and bring the opposing model to the foil to give contact to all teeth.

Figure 1e (right). Allow to cool, refine occlusion and finish the splint.

Figure 1c. The opposing model is occluded to deform the posterior material to create a flat plane. Close to within 1mm of contact with the anterior segment.

Figure 2a (left). To produce canine guidance, with the Occluform 3 closed, shape the soft material upwards in the required areas using a clean stainless steel instrument.

Figure 2b (right). When the cooling cycle is complete, define the shape of the guidance and finish the appliance. This process can be integrated into the creation of a flat plan.

Compensating

About the author

Peter Herring is a dental technician, prosthetist and a regular contributor to eLABORATE. He is the Australasian and Indonesian distributor for Erkodent products and spends his time between offices in Perth and Bali. He also operates a busy Australian lab dedicated to thermoformed appliances. He can be contacted at pjh@erkodent.com.au or for general enquires, call Freecall 1800-242-634.

Figure 3a. Here additional material is required to include anterior contact in cases with a class II relationship.

Figure 3d. ... Immediately open the Occluform 3 and replace the PE segment with a full foil covering the entire occlusion. Close to form a plane.

Figure 3b. Use a small segment of PE and place on the just formed material in the area that requires supplementation.

Figure 3e. Remove the PE foil and occlude the opposing model to give contact to all teeth. Refine and finish the splint.

Figure 3c. Quickly occlude the models to displace the material palatally then...

Information contained in this section is provided by the manufacturers or distributors. eLABORATE does not assume responsibility for the accuracy of the data.

Huge Dental full denture PMMA blanks

HUGE Full Denture PMMA blanks are designed for a full denture - helping you make your dental services more efficient, simpler and cost-effective. Combined with teeth and gum shade, the full denture block provides a one-step milling solution for dental laboratories to simplify the process. It has a flexural strength >120Mpa; Modulus of elasticity of

2500Mpa; water absorption of 11μg/mm³; solubility of 0.2μg/ mm³; and residual monomer content <1.0%. Full Denture blanks are available in a range of thickness to suit your needs.

Available: Alphabond Dental Tel: (02) 9417-6660 info@alphabond.com.au www.alpabond.com.au

BioniCutACE Snap from Bredent

BioniCutACE snap is a polyoxymethylene (POM)-based thermoplastic milling disc with excellent flexibility. BioniCut is the CAD/CAM solution for splints in tooth shade, extremely thin and practically invisible (Snap-On technique/beauty and bite splints); 24h functional therapeutic splints with which the patient can eat; Tooth preserving, practically invisible clasp prostheses; Model casting bases with attachment and telescope; and removable, tem-

porary clasp prostheses adapted for the healing phase of implant restorations. It has properties in accordance with DIN EN ISO 20795-1; Flexural strength: 85 MPa; Elasticity module: 2600 MPa; 100% recoverability (memory effect) in contrast to PEEK / PEAK materials.

Available: Alphabond Dental Tel: (02) 9417-6660 info@alphabond.com.au www.alpabond.com.au

Biomic LiSi Connect spray by Aidite

A layer of LiSi Connect is sprayed onto the zirconia bonding surface and after one sintering, it crystallizes on the surface of the zirconia into a lithium disilicate coating to complete the surface modification of the zirconia. The bonding strength of zirconia is significantly improved. The zirconia treated by LiSi connect has the same clinical bonding effect as glass ceramics, which helps the clinical bonding performance of zirconia.

Available: Alphabond Dental Tel: (02) 9417-6660 info@alphabond.com.au www.alpabond.com.au

Visio.lign COLOR and Visio.lign Shield

Visio.lign COLOR are lightcuring composite paints that can be used to effortlessly achieve colour effects on the surface of composite and acrylic restorations. Visio.lign COLOR colours Body A-D can be used to optimally adjust a veneer’s chroma. Furthermore, there is a wide range of Visio. lign COLOR paints available for efficient surface characterisation. The Visio.lign COLOR paints impress with their colour stability as well as their resist-

ance to discolouration and abrasion. It is the optimal solution for definitive restorations. Visio.lign Shield is a gloss varnish for composite, PMMA and BioHPP which allows you to create optimal surface gloss and protection.

Available: Alphabond Dental Tel: (02) 9417-6660 info@alphabond.com.au www.alpabond.com.au

PRETTAU® SKIN®

PRETTAU ® 3 DISPERSIVE ® : ZIRCONIA WITH COLOUR, TRANSLUCENCY AND FLEXURAL STRENGTH GRADIENTS

ULTRA-THIN ZIRCONIA VENEERS MADE OF PRETTAU ® 3 DISPERSIVE ® ZIRCONIA

Restoration made for a young patient suffering from caries, missing restoration of teeth 46 – 47 and different composite fi llings.

The planned treatment consisted of minimally invasive preparation of tooth enamel and tooth restoration with Prettau® Skin® zirconia veneers with a minimum wall thickness of 0.2 mm. Based on the patient-specifi c model articulation and on the selection of a digital Monsons Sphere with Ø 240 mm, the areas to be prepared in the occlusal region were highlighted and a preparation guide for the upper jaw was created.

After determining the centric relationship, it turned out that, due to the new occlusal height, the canine 23 needed a palatal support surface to optimise function. Therefore, a vestibular and a palatal veneer were designed to avoid overly invasive preparation of the natural tooth. During cementation, the vestibular veneer was applied first, followed by the palatal one, using the “Sandwich technique”.

Dr. Francisco García Torres – Mexico Zirkonzahn Education Center Brunico – South Tyrol, Italy