BUR SELECTION FOR ZIRCONIA DIOXIDE CROWN PREPARATION: A COMPREHENSIVE CLINICAL GUIDE

Аннотация

Objective: To provide a comprehensive analysis of bur selection criteria for optimal tooth preparation when fabricating zirconia dioxide crowns, examining the relationship between preparation quality, burcharacteristics, and clinical outcomes. Background: Zirconia dioxide has emerged as the gold standard for posterior crown restorations due to its exceptional strength, biocompatibility, and aesthetic properties. However, the unique material characteristics of zirconia demand specific tooth preparation parameters that differ significantly from traditional ceramic systems. The selection of appropriate cutting instruments directly influences preparation quality, margin integrity, and long-term restoration success. Methods: This comprehensive review examines current literature on zirconia crown preparation requirements, correlating these specifications with available bur technologies and their cutting characteristics. Clinical considerations include preparation depth requirements, margin design optimization, surface finish quality, and thermal management during preparation. Results: Optimal bur selection for zirconia preparation involves understanding the interplay between material removal efficiency, surface quality, and preparation geometry. Diamond burs with specific grit sizes and geometries demonstrate superior performance in achieving theprecise preparation requirements necessary for zirconiacrown success. Conclusions: Strategic bur selection based on scientific principles and clinical evidence significantly improves zirconia crown preparation quality and subsequent restoration longevity. Keywords: zirconia dioxide, crown preparation, dental burs, tooth preparation, CAD/CAM dentistry