O'Connell D T, Brayton S M
Oral Surg Oral Med Oral Pathol. 1975 Feb;39(2):298-303. doi: 10.1016/0030-4220(75)90233-9.
An evaluation of automated low-speed handpiece preparation of canals was made by a silicone injection technique. These preparations were compared and rated with canals prepared by conventional hand instrumentation. Canals were graded on the criteria of shape, smoothness, elimation of morphologic aberrations, and apical preparations. Conventional hand istrumentation proved to be superior and required approximately the same amount of time as automated ins-rumentation in this vitro study.
通过硅胶注射技术对根管的自动低速手机预备进行了评估。将这些预备与传统手动器械预备的根管进行比较并评级。根据根管的形状、光滑度、形态异常的消除情况以及根尖预备情况进行分级。在这项体外研究中，传统手动器械预备被证明更优，且所需时间与自动器械预备大致相同。
