根尖周组织中以慢性炎细胞浸润为主，未见有微生物。
Infiltration of chronic inflammation cell was discovered in periapical tissues with no microorganism observed.
结果显示：MPU-03材料对根尖周组织的刺激性明显轻于常规的糊剂牙胶尖充填材料（P＜0．01）。
The result indicated that the irritation of the MPU 03 material on periapical tissue was less than the root canal sealer and Guttapercha( P< 0.01).
乳牙根充糊剂除需具有恒牙根充糊剂的特性外，还需具有充填后能与乳牙牙根同步吸收、对乳牙根尖周组织和恒牙牙胚无害等性质。
Root canal filling pastes for primary tooth have to meet more needs than paste for permanent tooth, such as being absorbed with root simultaneously and doing no harm to permanent tooth germ.
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。
Root canal sealer combined with the core materials and dentin could seal the access between the oral cavity and periapical tissue, promoting the healing.
组织学观察：正常鼠根尖周牙周膜组织结构完整，根尖周牙槽骨正常无吸收。
Histology observation: All of the periapical tissues for control group were free of inflammation and bone destruction.
方法建立大鼠根尖周炎动物模型，于术后1、2、3、4周取下颌骨组织，摄X线牙片、制作石蜡切片；
The SD rats were killed at 1, 2, 3, 4 weeks and mandibular molar teeth X-ray were taken.
方法建立大鼠根尖周炎动物模型，于术后1、2、3、4周取下颌骨组织，摄X线牙片、制作石蜡切片；
The SD rats were killed at 1, 2, 3, 4 weeks and mandibular molar teeth X-ray were taken.
应用推荐