Lopes H P, Elias C N, Estrela C, Siqueira J F
Brazilian Association of Endodontics, Rio de Janeiro, Brazil.
Braz Dent J. 1998;9(1):39-45.
The purpose of this investigation was to evaluate the occurrence of apical transportation after root canal instrumentation using only K-Flexofiles or K-Flexofiles intercalated with K-Flexofile Golden Mediums. For this purpose, the degree (Schneider's method) and the radius of the curvature was recorded before and after instrumentation. The results showed that there was no statistically significant difference between the techniques. The correlation between the degree and the radius of curvature of the root canal was not consistent, nor was there a relationship between the original radius of curvature and the apical transportation. However, determination of curvature by use of its radius has proved to be an effective method.
本研究的目的是评估仅使用K-Flexofile锉或穿插使用K-Flexofile金色中号锉进行根管预备后根尖偏移的发生情况。为此，在预备前后记录根管弯曲度（施奈德法）和弯曲半径。结果显示，两种技术之间无统计学显著差异。根管弯曲度与弯曲半径之间的相关性不一致，原始弯曲半径与根尖偏移之间也无相关性。然而，事实证明，通过半径来确定弯曲度是一种有效的方法。
