The use of rotary instruments as auxiliary aids to root canal preparation of molars.
The use of rotary instruments as auxiliary aids to root canal preparation of molars.
复制标题
使用旋转器械作为磨牙根管预备的辅助工具。
DOI：
10.1016/s0099-2399(82)80262-8
复制
发表时间：
1982
影响因子：
4.2
通讯作者：
R. J. Jastrab
中科院分区：
文献类型：
--
作者：
M. Abou;R. J. Jastrab
将 100 颗成人拔除的磨牙（292 个牙根管）分为四组，每组 25 颗牙齿。第 1 组使用 K 型锉刀准备。第 2 组准备了尺码。 25 带有 K 型锉刀，后面跟着 1 号。 1 个 Peeso 铰刀，可扩大颈椎三分之一。然后用 K 型锉刀完成根管准备工作。第 3 组与第 2 组相同，只是编号不同。使用 1 Gates-Glidden 钻头代替 1 号钻头。 1 个 Peeso 铰刀。在第 4 组中，使用 Giromatic 方法制备根管。所有牙齿均扩大至尺寸。弯曲根部尺寸为 30 至 35，直根部尺寸为 40，位于根尖止动水平。用制剂制成精确的硅胶模型。由七名牙髓病专家组成的小组根据根尖设计、畸变消除、流动、锥度、均匀性和制备的光滑度的具体标准对结果进行评级。 K 型锉和 Peeso 铰刀或 Gates-Glidden 铰刀制剂（第 2 组和第 3 组）的组合很好地满足了前述标准。手动仪器和 Giromatic 技术产生的结果不太理想。
One hundred adult extracted molars (292 canals) were apportioned into four groups of 25 teeth each. Group 1 was prepared using K-type files. Group 2 was prepared to size no. 25 with K-type files, followed by a no. 1 Peeso reamer, which enlarged the cervical third. The canal preparation was then completed with K-type files. Group 3 was identical to group 2 except that a no. 1 Gates-Glidden drill was used instead of a no. 1 Peeso reamer. In group 4, canals were prepared with the Giromatic method. All teeth were enlarged to size no. 30 to 35 in curved roots and size 40 in straight roots, at the apical stop level.Accurate silicone models were made of the preparations. A panel of seven endodontists rated the results according to the specific criteria of apical design, aberration removal, flow, taper, uniformity, and smoothness of preparation. The combination of K-type file and Peeso reamer or Gates-Glidden reamer preparations (groups 2 and 3) favorably met the foregoing criteria. Hand instrumentation and the Giromatic technique produced less favorable results.