边距(机器学习)
基质(化学分析)
仰角(弹道)
材料科学
牙科
地质学
计算机科学
数学
复合材料
医学
几何学
机器学习
标识
DOI:10.1016/j.prosdent.2021.11.021
摘要
Deep margin elevation is a solution to the problem of localized subgingival margins when preparing a tooth for direct, semidirect, or indirect restorations. The technique focuses on the local isolation of the deep margin by using a modified circumferential matrix. An evolution of the technique is presented, the matrix-in-a-matrix technique, to facilitate the isolation and fit of the subgingival matrix by adding a sectional band inside the circumferential matrix and packing Teflon tape between the 2 bands. Resective surgeries, invasive restorative procedures, and even sometimes extractions can all potentially be avoided by this modified deep margin elevation, allowing ideal conditions for scanning or impression making.
科研通智能强力驱动
Strongly Powered by AbleSci AI