评估两种用于改变牙胶尖直径的牙胶测量仪的准确性。

Assessment of the accuracy of two gutta-percha gauges used to alter gutta-percha tip diameter.

作者信息

Hoffman Craig F, Walker Mary P, Kulild James C

机构信息

Department of Endodontics, University of Missouri Kansas City School of Dentistry, USA.

出版信息

Gen Dent. 2009 Jan-Feb;57(1):69-73.

PMID:19146145

Abstract

This study sought to compare the accuracy of two gauges used to alter gutta-percha (GP) cone tips. Randomly selected size 20 cones (with tapers of 0.02, 0.06, 0.10, or 0.12) were trimmed to size 50 (N= 10/taper/gauge) for an overall sample of 80 cones. Accuracy of the altered cone tips was determined by calculating the difference (in %) between the altered tip diameter and the expected tip diameter (0.50 mm). A two-factor ANOVA revealed significant differences (p < or = 0.05) in altered tip accuracy as a result of GP gauge and cone taper. The results suggest that the SybronEndo gauge performs accurately regardless of the cone taper, while the Maillefer gauge was accurate only when used to alter cones with a 0.02 taper.

摘要

本研究旨在比较两种用于改变牙胶尖（GP）尖端的测量仪的准确性。随机选择20号牙胶尖（锥度分别为0.02、0.06、0.10或0.12），将其修剪为50号（每种锥度/测量仪10个），共80个牙胶尖作为总体样本。通过计算改变后的尖端直径与预期尖端直径（0.50毫米）之间的差异（百分比）来确定改变后的牙胶尖的准确性。双因素方差分析显示，由于牙胶测量仪和牙胶尖锥度的不同，改变后的尖端准确性存在显著差异（p≤0.05）。结果表明，无论牙胶尖锥度如何，SybronEndo测量仪的测量结果都很准确，而Maillefer测量仪只有在用于改变锥度为0.02的牙胶尖时才准确。