目的探讨脱位牙再植成功的影响因素。方法 21例34个脱位牙经常规处理后原位再植、固定,并进行5年的随访观察。结果 34个脱位牙中再植成功32个,总成功率94.1%,其中疗效优41.2%,疗效良52.9%。结论脱位时间短,离体牙保存方法得当,牙根尖孔未发育完成者,以及牙周、牙槽无损伤的病例再植成功率高 Objective To investigate the influencing factors of successful replantation of dislocation. Methods Twenty-one 34 patients with dislocations were replanted in situ, fixed, and followed up for 5 years. Results Of the 34 dislocations, 32 were successfully replanted, with a total success rate of 94.1%, of which 41.2% were excellent and 52.9% were good. Conclusion The short time of dislocation, proper preservation of isolated teeth, successful completion of apical apical foramen, and high rate of replantation of periodontal and alveolar without injury