Wednesday, August 15, 2012
New Zirconia Wear Study
Zirconia is one of the most studied materials in dentistry, especially since the development of the monolithic option. Manufacturers insist that wear to opposing dentition is similar to enamel, provided that restorations are highly-polished. Furthermore, many dentists contend that individual crowned teeth in balanced occlusion should not spontaneously supererupt because of wear to the opposing teeth. Rella Christiansan’s TRAC Research group has released preliminary results of a 7-year full-contour zirconia wear study which supports both of these claims. The study seeks to measure the amount of wear zirconia and other monolithic restorations exhibit invivo. After one year, the “very promising” results show that zirconia “mimics” natural dentition.