Root canal sealer combined with the core materials and dentin could seal the access between the oral cavity and periapical tissue, promoting the healing.
根管封闭剂与核心充填材料、牙本质结合，封闭口腔和根尖周通道，促进尖周组织愈合。
Result: The novel root canal material can seal apical densely and has better degree of obturation than normal materials.
结果：新型根管充填材料能够严密地封闭根尖孔，与根管壁间的密合性优于常用根管充填材料。
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.
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。
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