研究目的
To compare the effects of different obturation techniques on the dentinal tubule penetration of Total Fill BC sealer in the presence of an apically separated instrument.
研究成果
Under the limitations of this in vitro study, results suggest that the type of obturation technique may play a significant role in sealer penetration beyond the separated instrument. Samples filled with CLC had the lowest penetration depth and percentage values at the 1 mm level.
研究不足
The study is an in vitro study, and the results may not directly translate to clinical conditions. Further studies with different root canal sealers and rotary files are needed.
1：Experimental Design and Method Selection:
The study evaluated the effects of different obturation techniques on sealer penetration in the presence of apically separated rotary files using confocal laser scanning microscopy.
2：Sample Selection and Data Sources:
Forty-eight extracted mandibular human incisors with single root canals were selected. ProTaper F2 rotary files were separated at the apical thirds.
3：List of Experimental Equipment and Materials:
ProTaper Universal system, X-Smart endodontic motor, Total Fill BC sealer, confocal laser scanning microscope (LSM 510, Carl Zeiss).
4：Experimental Procedures and Operational Workflow:
Samples were divided into four groups according to obturation technique used. Specimens were sectioned horizontally at 1 and 3 mm from the apex and studied using a confocal scanning laser microscope.
5：Data Analysis Methods:
The maximum tubule penetration depth and percentage of penetration were measured and statistically analyzed.
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