Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi.
Eur Endod J. 2020 Dec;5(3):236-241. doi: 10.14744/eej.2020.62534.
The purpose of this in vitro study was to compare the quality of root canal filling of C Point, GuttaCore and lateral compaction using confocal laser scanning microscopy.
Ninety recently extracted human mandibular incisors with single canal were selected. Canals were prepared with ProTaper instruments to size F3 and obturated using C Point, GuttaCore or lateral compaction technique. Endosequence BC sealer was labeled with Rhodamine B dye to allow analysis under a confocal microscope. The percentages of gutta-percha filled area (PGFA), sealer filled area (PSFA), voids (POV) and interfacial adaptation (IA) was assessed at 2, 5 and 8 mm from the apex, using image analysis software. Kruskal-Wallis followed by Mann Whitney U tests were used for data analysis, and the P value was set at 0.05 (P=0.05).
No significant difference was seen among the three groups at 2 mm level for PGFA, PSFA and voids (P>0.05). At 5 and 8 mm levels, canals filled with GuttaCore had significantly higher PGFA and lower PSFA than lateral compaction and C Point. Highest POV was seen for lateral compaction group followed by C Point and GuttaCore.
Out of the three techniques examined, best results in terms of quality of root canal filling were observed for GuttaCore. C Point system was found to be associated with internal defects such as tears and delamination which may adversely affect the long term performance of this system.
本体外研究的目的是使用共聚焦激光扫描显微镜比较 C 点、GuttaCore 和侧向压实技术根管充填的质量。
选择 90 颗近期拔除的下颌切牙，单根管。使用 ProTaper 器械预备至 F3 号，并用 C 点、GuttaCore 或侧向压实技术进行充填。使用 Rhodamine B 染料标记 Endosequence BC 密封剂，以便在共聚焦显微镜下进行分析。在距根尖 2、5 和 8mm 处使用图像分析软件评估牙胶填充面积百分比（PGFA）、密封剂填充面积百分比（PSFA）、空隙百分比（POV）和界面适应性（IA）。采用 Kruskal-Wallis 检验后行 Mann-Whitney U 检验进行数据分析，P 值设为 0.05（P=0.05）。
在 2mm 水平，三组之间的 PGFA、PSFA 和空隙无显著差异（P＞0.05）。在 5 和 8mm 水平，GuttaCore 充填的根管具有明显更高的 PGFA 和更低的 PSFA，低于侧向压实和 C 点。侧向压实组的 POV 最高，其次是 C 点和 GuttaCore。
在所检查的三种技术中，GuttaCore 根管充填质量最佳。C 点系统与撕裂和分层等内部缺陷相关，这可能会对该系统的长期性能产生不利影响。
