Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Int Endod J. 2010 May;43(5):377-81. doi: 10.1111/j.1365-2591.2010.01689.x.
To use the fluid transport model to evaluate the ex vivo short- and long-term microleakage along root canals filled with Gutta-flow or AH-Plus using the cold lateral compaction technique.
A total of 38 single-rooted human teeth were used for the assessment of microleakage. The crowns of the teeth were sectioned below their cemento-enamel junctions to adjust the length of the roots to approximately 15 mm. The root canals were instrumented using the step-back technique and filled using cold lateral condensation. The sealer employed was either Gutta-flow (Group A) or AH-Plus (Group B). Microleakage along the root canals was evaluated using a fluid transport model after periods of 1 week and 3 months.
The microleakage values (microL h(-1)) for group A were 0.36 +/- 0.33 at 1 week and 0.41 +/- 0.36 at 3 months. Group B showed mean microleakage values 0.2 +/- 0.31 at 1 week and 0.28 +/- 0.38 at 3 months. Statistical analysis indicated no significant differences (P > 0.05) between the two groups after either 1 week or 3 months.
There was no significant difference between AH-plus and Gutta-flow in terms of sealing ability.
使用流体输送模型评估使用冷侧压技术填充 Gutta-flow 或 AH-Plus 的根管的短期和长期微渗漏。
共有 38 颗单根人牙用于评估微渗漏。牙齿的冠部在其牙釉质-牙骨质交界处以下被切割，以将根的长度调整至约 15mm。使用后退技术对根管进行器械处理，并使用冷侧压技术进行填充。使用的密封剂是 Gutta-flow（A 组）或 AH-Plus（B 组）。在 1 周和 3 个月后，使用流体输送模型评估根管内的微渗漏。
A 组的微渗漏值（微升/小时）在 1 周时为 0.36±0.33，在 3 个月时为 0.41±0.36。B 组的平均微渗漏值在 1 周时为 0.2±0.31，在 3 个月时为 0.28±0.38。统计分析表明，在 1 周或 3 个月后，两组之间没有显著差异（P>0.05）。
在密封能力方面，AH-Plus 和 Gutta-flow 之间没有显著差异。
