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。
To access the feasibility and efficacy of home made nitinol stent in the treatment of malignant tracheobronchial stenosis by placement of airway stents via nasal cavity.
评价经鼻安放气道支架治疗恶性肿瘤引起的气管支气管狭窄的可行性和疗效。
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