Barone M
Università degli Studi di Roma - Tor Vergata.
G Ital Endod. 1991;5(1):10-4.
The author investigated the surface morphology and the cutting capability of endodontic instruments. One-hundred sixty flexofiles and 160 flexoreamers of various size, of which 40 were pre-curved by hand, 40 using hemostatic tweezers, 40 others were curved with an instrument designed for that purpose, and 40 remained unbent as a sample group, were used in the test. They were tested with a special device to determine the cutting capability. A morphological analysis of the surface was also performed with a stereomicroscope. The conclusions drawn were that pre-curving with hemostatic tweezers reduces the cutting capability by 75% for the flexofiles and by 50% for the flexoreamers doing irreparable damage to the surface structure of the endodontic instruments.
作者研究了根管治疗器械的表面形态和切割能力。测试使用了160根不同尺寸的Flexofile锉和160根Flexoreamer扩大器，其中40根用手预弯，40根用止血钳预弯，另外40根用专门设计的器械弯曲，还有40根未弯曲作为样本组。使用一种特殊装置对它们进行测试以确定切割能力。还用体视显微镜对表面进行了形态分析。得出的结论是，用止血钳预弯会使Flexofile锉的切割能力降低75%，使Flexoreamer扩大器的切割能力降低50%，对根管治疗器械的表面结构造成不可修复的损害。
