摘要：Objective: Zirconia is increasingly being used in restorative dentistry but its removal is often a difficult procedure due to its resistance to cutting with conventional diamond burs. Zirconia cutting burs have been developed and this study aims to compare 4 such burs. Methods: 35 experienced restorative dentists selected from our Practice Based Network (PBN) were asked to evaluate the cutting of a 1 mm groove into zirconia using 4 burs A (Meisinger), B (ZR2-1 experimental bur from DIATECH), C (Komet) & D (DIATECH Z-Rex, a bur designed with enhanced bonding of diamond grit to bur shank). Responses regarding cutting time, performance and wear were recorded. Results: For best cutting times and also overall performance D performed best and C the worst, with little difference between burs A and B. Bur C also performed least well for wear on the bur. Conclusion: The newly designed zirconia cutting bur DIATECH Z-Rex with enhanced bonding of diamond grit performed best in the analysis by the 35 dentists.

摘要：比色对于牙医来说是一个具有挑战的问题。在哈佛大学,我们一直在探寻将颜色从艺术领域引入到牙科学领域的方法。本文将就在哈佛大学牙学院进行的有关色彩学的不同方面的几项研究结果进行讨论,回顾分析并评估影响种植修复体视觉效果和比色的因素。色彩学研究的目的是为了给患者提供最好的美学修复效果。目前,种植修复治疗已经常规化,色彩和美观随之已经成为种植修复的重要考虑因素。由此我们已经进入了种植修复治疗的新阶段。