Implant-supported full arches made of zirconia

By MDT Michael Bergler, Clinical Assistant Professor, Director, Center for Virtual Treatment Planning, Philadelphia

Dr Wael Isleem, Philadelphia

Dr Howard Fraiman, Clinical Associate Professor, Director, Periodontal Prosthesis Program, Philadelphia

Apatient presented to the dentist requesting a fixed implant-supported restoration for the upper and lower jaw. The dental technician who worked on the case, MDT Michael Bergler, pointed out that “Virtual Treatment Planning” allowed the viewing of the case before the procedure, allowing potential problems and sources of error to be avoided in order to achieve an optimal patientoriented result and simplify the process for the techno-clinical team. According to him, the collection of data with the digital instruments available today played a significant role in transferring the oral situation into the digital world as precisely as possible.

Digital data is the prerequisite for planning and at the same time the basis for precise treatment delivery and a close cooperation between dentist and dental technician is the key factor which made such treatment possible.

Workflow

• Data collection: impression taking and bite registration with the existing prostheses, CBCT scans and 3D face scan with the Face Hunter 3D facial scanner.

• Tooth set-up and digital design of both full arches in the Zirkonzahn.Modifier software program to correct occlusion and aesthetics.

• Production and characterisation of the new resin prostheses and insertion in the patient’s mouth; both prostheses are used as the basis for all further treatment steps.

• Implant planning and production of surgical guides.

• 3D printing the implant models according to the implant planning, with integrated analogues.

• Pin integration to stabilise the surgical guides and the immediate temporaries, ensuring a correct 3D orientation; 3D printing of the surgical guides and the temporaries.

• Characterisation of the temporaries.

• Implant placement and impression taking after the healing period; insertion of the temporaries into the mouth.

• Scanning of the implant-supported temporaries on master models for designing the permanent zirconia restorations.

• Milling of the full arches in Prettau® 2 Dispersive® zirconia with Zirkonzahn’s M2 Dual Teleskoper milling unit. Prettau 2 Dispersive (1200 MPa) is a material characterised by high flexural strength and translucency as well as colour gradient, which is already provided during the manufacturing process. The colour gradient lends the restoration a natural effect and the characterisation process is no longer required.

• Characterisation of teeth and gingival areas; insertion in the patient’s mouth.

• Follow-up visits confirmed that the treatment was successful and that no complications occurred.

For info about the workflow and products: www.zirkonzahn.com, +39-0474-066663 or email valentina.sacco@zirkonzahn.com

ZIRKONZAHN SHADE GUIDES