目的：评价硅酸三钙对牙本质小管的阻塞能力。
Objective: To evaluate the tubule occluding ability of tricalcium silicate.
目的研究氟离子导入过敏牙本质后牙本质小管的形态变化。
Objective to study the conditions and alterations of dentin tubule orifices after fluoride iontophoresis into hypersensitive dentin.
结果：对照组：感染根管牙本质小管形态不规则，排列紊乱。
Results: Control group: the dentinal tubules lined up in disorder and irregularity.
第3组虽然能有效去除玷污层，但会引起牙本质小管中度腐蚀。
Although irrigants of group 3 could remove smear layer effectively, it resulted in moderate erosion of dentinal tubules.
结论激光照射15秒和30秒能够清洁根管壁和封闭牙本质小管。
Conclusion the irradiation of laser (15s, 30s) on the wall of root canals can seal tubules and clean wall of root canals.
两组的牙本质小管面积和相对面积有显著性差异（P<0.05）。
There were significant differences in both area and per area between two groups (P<0.05).
结果表明五倍子有去除玷污层的作用，且不会过度侵蚀牙本质小管；
The results showed that aqueous extract from Chinese nutgall can remove the smear layer without enlarged orifices.
结果NS牙面涂料在牙本质表面形成结晶，覆盖乃至堵塞牙本质小管。
Results NS paint grew crystal in the dentine surface, occluding dentine tube.
结果：牙本质经化合物沉积法处理后，其表面牙本质小管开口被结晶状物质封闭。
RESULT: The SEM pictures showed that the process formed a uniform layer covering and occluded with crystalloid substances in dentinal tubules.
结论使用30%草酸钾封闭牙本质小管可有效防止及减少前牙根管治疗后牙冠变色。
Conclusions Applying 30% supersaturated potassium oxalate to block dentinal tubule could prevent or reduce crown surface discoloration effectively after front teeth canal therapy.
结论在根管治疗的同时结合内漂白技术和牙本质小管封闭技术能有效地防治牙冠表面变色。
Conclusion By adopting the root canal therapy together with the technologies of inner bleaching and seal dentinal tubule we can prevent and cure crown surface discoloration effectively.
特点：异种？三单步自腐蚀牙胶密封避免敏感的牙本质小管和消除问题的干燥和酸蚀牙本质。
Characteristic: Xeno? III Single Step Self etching Dental Adhesive avoids sensitivity by sealing dentinal tubules and eliminating problems of over drying and over - etching of dentin.
氟化钠组根面亦可见明显的划痕，暴露的牙本质小管部分被封闭，在根面可见大小不一散在的指状结构；
NaF group also had significant root surface scratches, exposed dentinal tubules were partially closed and scattered finger-like structures are also visible on the root surface;
氟化钠组根面亦可见明显的划痕，暴露的牙本质小管部分被封闭，在根面可见大小不一散在的指状结构；
NaF group also had significant root surface scratches, exposed dentinal tubules were partially closed and scattered finger-like structures are also visible on the root surface;
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