1·Objective: To determine the importance of the remaining dentin thickness, preparation depth and post-operative time on the pulpal inflammation after the crown preparation.
目的：观察全冠牙体预备后牙髓牙本质复合体的反应及剩余牙本质厚度和修复时间对牙髓的影响。
2·Objective: to analyze the relationship between the clinical symptoms of deep caries of primary molars and its pulpal pathological changes.
目的：分析深龋乳牙临床症状体征与牙髓组织病理学变化的关系。
3·Root canal therapy is currently the most effective treatment for pulpal and periapical diseases.
根管治疗是目前牙髓病和根尖周病最有效的治疗方法。
4·Results: All impacted anterior maxillary teeth of the 16 cases were successfully moved into alignment with pulpal vitality , and no postoperative complications were found.
结果：16例上颌埋伏阻生前牙均顺利萌出至正常位置，牙髓活力测试正常。未见龈退缩、邻牙牙根吸收和支抗丧失等常见并发症。