Abstract：
OBJECTIVE: The aim this retrospective analysis was to evaluate the survival, success and possible complications of transplanted premolars to the anterior region subdivided in development stage and patient\'s age.
METHODS: The material comprised patients that underwent a tooth transplantation between April 2004 and December 2021. A total of 910 premolars were transplanted in 707 patients. Tooth mobility, oral hygiene, and periodontal parameters were clinically evaluated. Standardized radiographs were used to evaluate pulpal and periodontal healing and root formation. The cumulative survival rate was calculated using the Kaplan-Meier method.
RESULTS: The data were subdivided in three groups based on the stage of root development and patient\'s age. The average age at surgery was 16 years. The main indication for transplantation was trauma, followed by agenesis and other indications. Two premolars were lost during the whole observation period. The overall survival and success in the immature premolars group after an observation period of 10 years was 99.8%. The 10-year survival and success rate when fully developed premolars were transplanted in the anterior region in adolescents were 100% and 96.3%, respectively. In adults, the 10-year survival and success rate were 87.5%.
CONCLUSIONS: Transplantation of premolars with developing and fully developed roots to the anterior region in children, adolescents, and adults is a predictable treatment modality.
METHODS: The material comprised patients that underwent a tooth transplantation between April 2004 and December 2021. A total of 910 premolars were transplanted in 707 patients. Tooth mobility, oral hygiene, and periodontal parameters were clinically evaluated. Standardized radiographs were used to evaluate pulpal and periodontal healing and root formation. The cumulative survival rate was calculated using the Kaplan-Meier method.
RESULTS: The data were subdivided in three groups based on the stage of root development and patient\'s age. The average age at surgery was 16 years. The main indication for transplantation was trauma, followed by agenesis and other indications. Two premolars were lost during the whole observation period. The overall survival and success in the immature premolars group after an observation period of 10 years was 99.8%. The 10-year survival and success rate when fully developed premolars were transplanted in the anterior region in adolescents were 100% and 96.3%, respectively. In adults, the 10-year survival and success rate were 87.5%.
CONCLUSIONS: Transplantation of premolars with developing and fully developed roots to the anterior region in children, adolescents, and adults is a predictable treatment modality.
摘要：
目的：本回顾性分析的目的是评估生存率，前磨牙移植到前区的成功和可能的并发症细分在发育阶段和患者的年龄。
方法：该材料包括2004年4月至2021年12月接受牙齿移植的患者。707例患者共移植了910颗前磨牙。牙齿移动,口腔卫生,和牙周参数进行临床评估。标准化的X光片用于评估牙髓和牙周愈合以及牙根形成。使用Kaplan-Meier方法计算累积生存率。
结果：根据根系发育阶段和患者年龄将数据细分为三组。手术的平均年龄为16岁。移植的主要适应症是外伤,其次是发育不全和其他适应症。在整个观察期间丢失了两个前磨牙。经过10年的观察期，未成熟前磨牙组的总体生存率和成功率为99.8％。完全发育的前磨牙在青少年前区移植的10年生存率和成功率分别为100%和96.3%,分别。在成年人中,10年生存率和成功率为87.5%。
结论：将具有发育和完全发育的根部的前磨牙移植到儿童的前部区域，青少年,成人是一种可预测的治疗方式。
方法：该材料包括2004年4月至2021年12月接受牙齿移植的患者。707例患者共移植了910颗前磨牙。牙齿移动,口腔卫生,和牙周参数进行临床评估。标准化的X光片用于评估牙髓和牙周愈合以及牙根形成。使用Kaplan-Meier方法计算累积生存率。
结果：根据根系发育阶段和患者年龄将数据细分为三组。手术的平均年龄为16岁。移植的主要适应症是外伤,其次是发育不全和其他适应症。在整个观察期间丢失了两个前磨牙。经过10年的观察期，未成熟前磨牙组的总体生存率和成功率为99.8％。完全发育的前磨牙在青少年前区移植的10年生存率和成功率分别为100%和96.3%,分别。在成年人中,10年生存率和成功率为87.5%。
结论：将具有发育和完全发育的根部的前磨牙移植到儿童的前部区域，青少年,成人是一种可预测的治疗方式。
