上颌阻生尖牙引起邻牙牙根外吸收的危险因素分析

[关键词]阻生尖牙;牙根外吸收;锥形束CT;危险因素;Logistic回归分析

[中图分类号]R783.9    [文献标志码]A    [文章编号]1008-6455（2021）11-0131-04

Analysis of the Potential Risk Factors for Impacted Canine-associated Root Resorption

LI Miao，BAI Yu-hao，QING Lu，ZENG Hong-yan

（Department of Stomatology， Xuanwu Hospital，Capital Medical University，Beijing 100053，China）

Abstract： Objective  To Linvestigate the risk factors for impacted canine-associated root resorption （ICARR） and to predict ICARR by analyzing the CBCT images and patients’ information. Methods  Cone-beam computed tomography （CBCT） scan images of 106 patients with impacted maxillary canines in Xuanwu Hospital ，Capital Medical University were collected. All cone-beam computed tomography data and the patients’ information were evaluated in software program by 1 rater.To identify risk factors for ICARR， the subjects with impacted canine were divided into 2 groups （with and without root resorption）. Measurements of 8 variables were individually compared between the groups and then tested together by using binary logistic regressions. Results  Individually， variables reflecting the depth of the impacted maxillary canine，the direction of the impacted maxillary canine，proximity between canine and adjacent root ，the canine development stage，sex and the impacted canine with wide follicles（d≥2mm）were associated with ICARR.Combined，the depth of the impacted canine（high/ medium OR=5.280），proximity between canine and adjacent root（yes/no OR=4.132），the impacte canine with wide foliicles（OR=4.532） had a high risk to cause ICARR significant. Conclusion  High impacted canine、proximity between canine and adjacent root and the impacted canine with wide foliicles are the most important risk fatcors for root resorption.

Key words： impacted canine; root resorption; cone beam computer tomography; risk factor; logistic regressions

上頜阻生尖牙是临床上第二好发的阻生牙，仅次于第三磨牙，其患病率为1.0%～5.6%[1-3]。