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目的：用CBCT观察自体牙移植术后发生牙周膜愈合的情况，并且与传统的X根尖片进行对比观察。方法选择2010年3月至2013年3月贵阳市口腔医院收治的经CBCT术前分析评估确定行自体牙移植的20例患者，共21颗牙，牙列已基本排齐整平，应用CBCT对移植牙进行术前手术方案的制定，术后对移植牙行正畸固定，2周后施加适当的正畸力，术后8周摄CBCT，观察牙根愈合情况，并对牙周膜愈合进行统计。结果20例患者的21颗自体牙，CBCT示牙周膜愈合9例共10颗自体牙，牙周膜愈合比例为48%，而X根尖片示牙周膜愈合5例共5颗自体牙，牙周膜愈合比例为24%。结论与传统的X跟尖片相比，CBCT对自体牙移植后牙根是否发生牙周膜愈合情况的判断更加客观和准确。“,”Objective To evaluate the role of cone beam computed tomography in evaluation of periodontal ligament healing observation of autogenous tooth transplantation, and compare with the traditional X periapical films. Methods 20 patients with autotransplantation during Orthodontic treatment was selected, A total of 21 teeth,and the dentition has been basically aligning and leveling. Application of CBCT to formulate operation scheme of tooth transplantation before operation, after operation on transplantation broker orthodontic fixed, 2 weeks after applying orthodontic force properly, CBCT taken 8 weeks after operation, healing and to investigate the root, periodontal healing statistics. Results CBCT showed the periodontal healing in 9 cases, 10 teeth with tooth, periodontal healing ratio of 48%,While X periapical films shown periodontal healing in 5 cases, 5 teeth with tooth, periodontal healing ratio of 24%. Conclusion Compared with traditional X compared with splinters, CBCT on autotransplantation teeth after root whether periodontal ligament healing judgment more accurate and objective.