数字化导板引导下的显微牙体预备--从新认识到新实践

Guided micro tooth preparation:from new strategies to new clinical practices

为进一步减少相关并发症,如何在符合牙体保存、活髓保护以及牙周组织和功能健康的原则下完成精准且可测量的牙体预备一直是口腔修复临床的技术难点。以目标修复体空间为核心、数字技术为支撑的术前分析设计、术中引导预备及术后修复体制作的序列引导技术,预告、转移与再现以实际测量为基础的修复空间数值及数量关系,是数字化口腔修复的数字逻辑基础。本文对牙体预备引导方式的新旧认识、数字化牙体预备导板的分类与应用、数字化导板引导下的显微牙体预备实践等方面进行论述,提出牙体预备从经验引导向数字引导转变才是支撑数字化修复的基础之一。

Accurate and measurable tooth preparation under the principle of protecting dental tissue,vital pulp and periodontal tissue health is a challenging procedure in esthetic dental restoration.The traditional protocol of tooth preparation often leads to complications after restoration because of the lack of precise preparation control.The pre-operative analysis and design,intraoperative guidance and sequence guidance technology of post-operative prosthesis production,with the target restoration space(TRS)as the core and digital technology as the support technology,embody the numerical requirements of the prosthesis space based on the actual measurement,and will lay the core foundation of the future digital prosthodontics.This paper introduces the new understanding of tooth preparation guidance,the classification and application of digital guides,the practice of micro tooth preparation guided by digital template,and summarizes the development direction of prosthodontics from experience guidance to digital guidance.