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。
2
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.