Bresser R A, Cune M S, Gresnigt M M M
Ned Tijdschr Tandheelkd. 2023 Feb;130(2):85-88. doi: 10.5177/ntvt.2023.02.22097.
Deep subgingival margin elevation is a much-debated topic in adhesive and restorative dentistry. The hydrophobic trait of adhesive materials challenges the restorative procedure of cavities with deep subgingival margins since bonding and isolation by means of rubber dam is complicated. By relocating the deep subgingival preparation outline to epigingival, or supragingival with a direct composite restoration, the impression procedure and the use of rubber dam is simplified and the bonding of an indirect adhesive restoration can be performed more reliably. In the English-language literature, the term 'Deep Margin Elevation' is reserved for this approach. This article discusses the rationale and clinical implementation of Deep Margin Elevation. The current knowledge about the coronal relocated preparation margin is growing and is tersely summarized in this article with special attention to adhesive bonding between dentine, composites, and ceramic.
深龈下边缘提升是口腔粘接修复领域中一个备受争议的话题。粘接材料的疏水特性给深龈下边缘龋洞的修复带来了挑战，因为使用橡皮障进行粘接和隔离操作较为复杂。通过将深龈下预备边缘转移至龈上，即采用直接复合树脂修复至龈上，印模操作和橡皮障的使用得以简化，间接粘接修复的粘接也能更可靠地进行。在英文文献中，“深边缘提升”这一术语专指这种方法。本文将探讨深边缘提升的原理及临床应用。目前关于冠方移位预备边缘的知识不断增加，本文将对此进行简要总结，并特别关注牙本质、复合材料和陶瓷之间的粘接。
