Efficiency of the 0.04 taper ProFile during the re-treatment of gutta-percha-filled root canals
Efficiency of the 0.04 taper ProFile during the re-treatment of gutta-percha-filled root canals
复制标题
DOI：
10.1046/j.1365-2591.2002.00514.x
复制
发表时间：
2002-08-01
影响因子：
5
通讯作者：
Fariniuk, LF
中科院分区：
文献类型：
--
作者：
Baratto, F;Ferreira, EL;Fariniuk, LF
目的本研究的目的是确定0.04 ProFile 器械在拔除牙根填充物过程中的有效性。方法学总共30 个单根下颌尖牙分为三组。进入根管，然后使用往复式自动化设备和镍钛锉进行准备。使用了三种不同的封闭技术：Thermafil 系统（第一组）、热机械压实（第二组）和横向压缩（第三组）。所有三组均使用 Sealer 26。封闭两周后，使用 0.04 ProFile 仪器按照尺寸 90、60、45、40、35 和 30 的标准化顺序以 300 rpm 的速度以冠向下的方式去除填充物。随后用凿子将牙齿劈开，用彩色摄像机拍摄照片，并由两名检查员目视（通过颜色）评估填充材料的去除情况。还记录了达到工作长度所需的时间。结果ProFile 仪器在所有情况下都达到了工作长度。然而，仅在三个样本中完全去除了古塔胶（I 组中的两个，II 组中的一个）。 Thermafil 塑料载体在 I 组的所有标本中均被成功去除。结论 0.04 锥度的 ProFile 器械不足以完全去除根管系统中的填充材料。然而，理想的工作长度很快就达到了。
Aim The objective of this study was to determine the effectiveness of 0.04 ProFile instruments during the removal of root fillings.Methodology A total of 30 single-rooted mandibular canines were divided into three groups. The canals were accessed and then prepared with a reciprocating automated device and nickel-titanium files. Three different techniques of obturation were used: Thermafil system (group I), thermomechanical compaction (group II) and lateral condensation (group III). Sealer 26 was used in all three groups. Two weeks after obturation, the fillings were removed using 0.04 ProFile instruments following standardized sequence of size 90, 60, 45, 40, 35 and 30 at a speed of 300 rpm in a crown-down manner. The teeth were subsequently split with a chisel, photographs were taken with a colour video camera and the removal of filling material was assessed visually (by colour) by two examiners. The time required to achieve the working length was also recorded.Results ProFile instruments reached the working length in all cases. However, complete removal of gutta-percha occurred in only three specimens (two of group I, and one of group II). Thermafil plastic carriers were removed successfully in all specimens of group I.Conclusions ProFile instruments with 0.04 taper were inadequate in completely removing the filling materials from the root canal system. However, the ideal working length was achieved rapidly.