逆行技术边缘适应性的比较：一项扫描电子显微镜研究

A comparison of the marginal adaptation of retrograde techniques: a scanning electron microscopic study.

作者信息

Tanzilli J P, Raphael D, Moodnik R M

出版信息

Oral Surg Oral Med Oral Pathol. 1980 Jul;50(1):74-80. doi: 10.1016/0030-4220(80)90335-7.

Abstract

An investigation of the most popular retrograde technique for their marginal adaptation to dentin was attempted. Forty extracted maxillary central incisors were instrumented and obturated, and various apical procedures were performed. The scanning electron microscope was used to record the results. Retrograde amalgam, heat-sealed gutta-percha, and the apicoectomy control showed average marginal defects from 22 micron to 104 micron, while cold-burnished gutta-percha exhibited an average defect of only 1.8 micron. The marginal defect produced by cold-burnished gutta-percha is less than one tenth as large as the best of the other techniques.

摘要

对最常用的倒充填技术与牙本质的边缘适应性进行了一项研究。选取40颗拔除的上颌中切牙进行预备和充填，并实施了各种根尖手术。使用扫描电子显微镜记录结果。倒充填银汞合金、热封闭牙胶和根尖切除术对照组的边缘缺陷平均为22微米至104微米，而冷加压牙胶的平均缺陷仅为1.8微米。冷加压牙胶产生的边缘缺陷不到其他技术中最佳者的十分之一。