Exploring: Digital Impressioning
Lava Chairside Oral Scanner
“The Future of Dentistry” by Dr. James M. Carroll
When you think you have seen it all, change happens. A change that is so significant it affects the way we practice; a change for the better that benefits patients, dental laboratories, dentists, and the green earth. New technology has changed the way I practice. I no longer have to make messy impressions, mount cases on semi-adjustable articulators, trim dies, or fight with dental labs about the accuracy of impressions. I’m referring to 3M’s Lava Chairside Oral Scanner (C.O.S. for short) used for crown and bridge dentistry. The profession has a new tool that I consider to be revolutionary to dentistry, just as the high-speed handpiece and photopolymerizing resins did years ago. Remember Nuvafill, Borden Air Rotors, and Adaptic filling material? These products changed the way in which we practice dentistry today and the similarity between them and the C.O.S. is that the individual dentist will be slow in accepting the new technology. After using the C.O.S. for a few weeks, it is obvious that it is setting new standards for the profession. The C.O.S. is accurate, plus or minus 4-6 microns. This accuracy means decreased delivery times, very little adjustment of occlusion or contacts and margins that are undetectable. Using the C.O.S. eliminates many of the errors encountered with conventional impression techniques. I have delivered 130+ crowns (PFM, Empress, Emax, and Lava) and have not had the first remake! This is remarkable in itself, not to mention the increase in patient’s acceptance of treatment when they find out there is no impression! Dental laboratories can only be as accurate as the impression that they receive from the dentist, but with the C.O.S. superior impressions, the crowns you get back from the lab are excellent.
The C.O.S. is accurate, plus or minus 4-6 microns. This accuracy means decreased delivery times, very little adjustment of occlusion or contacts and margins that are undetectable. 6
Dental Explorer | First Quarter 2010
The accuracy and reduced patient anxiety are not the only positives when it comes to the C.O.S. It is also a green technology. What I mean by this is the traditional impressions use chemicals that are not easily biodegradable, whereas the C.O.S. does away with this problem, ultimately making it safer for the patients and the earth. Whenever integrating new technology, materials, or procedures into the practice, I investigate the cost effectiveness of making this type of investment. C.O.S. will replace expensive impression materials, and that in itself will pay for the majority of the unit. The relationship with your lab is very important. I have used Pittman Dental Lab for over 15 years. They have a program for C.O.S. users that helps pay for the unit through volume related discounts. It works like this: if my lab bill per month is a