上颌唇侧倒置埋伏中切牙患者正畸矫治后埋伏牙发生及牙根吸收的影响因素分析

评估上颌唇侧倒置埋伏中切牙患者正畸矫治后埋伏牙发生及牙根吸收的影响因素。方法 收集2019年3月-2021年3月于溧阳市人民医院就诊的1021例上颌唇侧倒置埋伏中切牙患者临床资料进行回 顾性调查，查阅锥形束CT及X线图像。其中113例发现埋伏牙，按照是否出现牙根吸收分为牙根吸收组 （51例）和牙根未吸收组（62例）。调取资料，包括性别、初诊年龄、平均体质量指数、埋伏牙位置、 近远中分区、是否拔牙、正畸治疗时间、埋伏牙发生个数等。统计上述指标情况，分析正畸矫治后埋伏 牙牙根吸收的单因素和多因素。结果 1021例患者中埋伏牙113例（11.07%）；牙根吸收组平均年龄、2~4 区占比均低于牙根未吸收组（P ＜0.05）；牙根吸收组拔牙率、正畸治疗时间＞2年占比均高于牙根未吸 收组（P ＜0.05）；两组性别、平均体质量指数、埋伏牙位置、病变位置、埋伏牙发生个数比较，差异无 统计学意义（P ＞0.05）；Logistic结果显示，高龄、近远中分区（0~1区）、拔牙、正畸治疗时间＞2年均为 正畸矫治后埋伏牙牙根吸收的高危因素（P ＜0.05）。结论 上颌唇侧倒置埋伏中切牙正畸矫治后埋伏牙牙 根吸收与年龄、近远中分区、拔牙、正畸治疗时间有关，对于高危因素患者，临床应给予重视，采用早期 干预措施，减少损伤。

Analysis of Factors Affecting the Occurrence of Impacted Teeth and Root Resorption in Patients with Labial Inversely Impacted Maxillary Central Incisors After Orthodontic Treatment

To evaluate the influencing location of impacted teeth, location of lesions and number of impacted teeth between the two groups (P >0.05). Logistic results showed that advanced age, mesial and distal partition (0-1 zone), tooth extraction and orthodontic treatment time >2 years were high risk factors for root resorption of impacted teeth after orthodontic treatment (P <0.05). Conclusion The root resorption of labial inversely impacted maxillary central incisors after orthodontic treatment is related to age, mesial and distal partition, tooth extraction and orthodontic treatment time. For patients with high risk factors, clinical attention should be paid to early intervention measures to reduce injury. factors of impacted teeth occurrence and root resorption in patients with labial inversely impacted maxillary central incisors after orthodontic treatment. Methods The clinical data of 1021 patients with labial inversely impacted maxillary central incisors who were treated in Liyang People''s Hospital from March 2019 to March 2021 were collected for retrospective investigation, and cone beam CT and X-ray images were reviewed. Among them, 113 patients were found to have embedded teeth, which were divided into root resorption group (51 patients) and non-root resorption group (62 patients) according to whether there was root resorption. The data were collected, including gender, age of initial diagnosis, average body mass index, location of impacted teeth, mesial and distal partition, tooth extraction, orthodontic treatment time, number of impacted teeth, etc. The above indexes were statistically analyzed, and the single and multiple factors of root resorption of impacted teeth after orthodontic treatment were analyzed. Results Among the 1021 patients, 113 patients (11.07%) had impacted teeth; the average age and the proportion of 2-4 zones in the root resorption group were lower than those in the non-root resorption group (P <0.05). The extraction rate and the proportion of orthodontic treatment time >2 years in the root resorption group were higher than those in the non-root resorption group (P <0.05). There was no significant difference in gender, average body mass index,