瓷美学修复中预备体边缘与修复体边缘的专家共识

瓷美学修复是固定修复的热点,如何提升其边缘修复效果一直是瓷美学修复诊疗水平提升、相关并发症防治的重点以及医技合作的难点.但长期以来固定修复中对边缘的定义与分类、预备术以及制作工艺、质检等还存在诸多不完整的认知,医技统筹合作不足,而实操中医生或技师常常也缺乏核查牙体预备磨切量、预备体与修复体外形形态的可靠方法,大多依赖目...

Consensus on the preparation margin and restoration margin in ceramic esthetic rehabilitation

In esthetic rehabilitation, methods used to enhance the margin quality have always been the focus and difficulty of improving the level of diagnosis and treatment, prevention and treatment of complications, and collaboration between clinicians and technicians. However, it is impeded by the ambiguous definition and classification of margin, unstandardized tooth preparation, manufacturing process of restoration, and lack of reliable means of checking the quantitative requirements of preparation or restoration. The digital technologies that are increasingly applied, such as intra-oral scanner, impression scanner, and computerized numerical control cutting machine, have strict requirements about margin quality. Failure of recognizing margins by these scanners will hinder the digital process of diagnosis and treatment. Even if these sharp and narrow margins are successfully scanned, they cannot be milled accurately. To overcome these problems, this article demonstrated the clear and complete definition of preparation margin and restoration margin, as well as their subclassifications, by analyzing the target restoration space from a geometric perspective. Practical approaches to measuring the margin width and inspecting the margin quality were proposed. The new and full understanding and proposal about preparation margin and restoration margin characterized by measurements will effectively support the thoroughly digitalized process of esthetic rehabilitation using porcelain in fixed prosthodontics, which is based on the guidance of values.