A Double Blind Split Mouth Randomized Clinical Trail Comparing Marginal Fit Of Porcelain Laminate Veneers After Finishing Prepared Surfaces With Ultrasonic Tips

Background: Smoothing prepared surfaces improve the marginal fit of all prepared surfaces while several methods have been introduced in dental daily practice and in the literature so far. In the last few years ultrasonic tips entered the prosthetic aspect and several manufactured tips has been suggested to have a role in the accuracy of restored teeth process and could give an improvement to the daily dental practice. Objectives: The aim of the study was to assess the marginal fit following preparation finishing with ultrasonic tips of porcelain veneers compared with prepared only by bur. Material and Methods: 27 patient including 240 veneers prepared for porcelain veneers in overlap scheme with split mouth technique one side finished with ultrasonic tips (Perfect Margine Kit - Satelic R).Marginal fit is measured by cement replica technique. The extra light silicon is measured under microscope all measures is documented and the comparison is achieved statistically .After measurement all veneers are cemented with rely x veneers resin cement. Results: The fit was significantly different between both finishing systems across preparation (P < 0.001).The average fit was 42 μm for preparation with ultrasonic finishing veneers , 82 μm for preparation with conventional Conclusion: In conclusion, finishing the surface preparation with ultrasonic tips reduce the marginal gape and improve the marginal seal