青少年与成年人正畸治疗后上颌切牙牙根吸收程度比较  

Comparison of apical root resorption of maxillary incisors between adolescents and adults after orthodontic treatment

作　　者：葛伶伶 吕倩 白雪 吴邵鸿 姜喜玲 GE Ling-ling;LYU Qian;BAI Xue;WU Shao-hong;JIANG Xi-ling(Department of Stomatology,Inner Mongolia Chifeng College Affiliated Hospital,Chifeng 024000,Inner Mongolia Autonomoiis Region,China)

机构地区：[1]内蒙古赤峰学院附属医院口腔科,内蒙古赤峰024000

出　　处：《上海口腔医学》2021年第2期187-190,共4页Shanghai Journal of Stomatology

基　　金：赤峰市自然科学科研课题[赤科协学字(2020)2号SZR152]。

摘　　要：目的:研究青少年与成年人正畸治疗后上颌切牙牙根吸收情况。方法 :选择2014年5月-2016年8月于赤峰学院附属医院接受正畸治疗的患者,按年龄分为青少年组(12~17岁,32例)与成人组(18~35岁,36例)。入组患者均接受全口直丝弓矫治技术,矫治结束后戴Hawley保持器,随访1年。治疗前(T1)、治疗结束时(T2)、治疗后6个月(T3)、治疗后12个月(T4)拍摄锥形束CT(cone-beam CT,CBCT)图像,经计算机测量各目标牙牙根体积。采用SPSS22.0软件包对数据进行统计学分析。结果:2组T2、T3、T4时间点两侧上颌中切牙、左右上侧切牙、左右下中切牙、左右下侧切牙牙根体积均显著低于T1时间点(P<0.05);2组T3、T4时间点各牙位牙根体积均部分增加,但与T2时间点相比无显著差异(P>0.05)。2组△牙根体积T3-T2、△牙根体积T4-T3相比均无显著差异(P>0.05);青少年组△牙根体积T1-T2显著小于成人组(P<0.05)。相关分析显示,△牙根体积T1-T2与年龄呈正相关(P<0.05);△牙根体积T3-T2、△牙根体积T4-T3与年龄呈负相关(P<0.05)。结论:年龄是影响正畸治疗后牙根体积的重要因素,青少年安氏Ⅱ1类错畸形患者正畸治疗牙根吸收后的自行修复能力较强。PURPOSE: To compare apical root resorption of maxillary incisors between adolescents and adults after orthodontic treatment. METHODS: Patients receiving orthodontic treatment in Affiliated Hospital of Chifeng University from May 2014 to August 2016 were enrolled, and divided into two age groups: adolescent group(32) and adult group(36). The included subjects received orthodontic fixed appliance treatment with straight-wire technique combined with Hawley type retainer for one year. After treatment, all patients were followed up for one year. Then the apical root resorption of maxillary incisors was evaluated by cone-beam CT(CBCT) at 4 time points, including pre-treatment(T1), end of treatment(T2),6 months after treatment(T3), and 12 months after treatment(T4). Data were processed by SPSS 20.0 software package.RESULTS: The external root volume of maxillary central incisor, lateral incisors, mandibular central incisors and mandibular lateral incisors of both sides at T2-T4 was significantly lower than that at T1(P<0.05). There was partial increase in root volume of both groups at T3 and T4, while no significant difference from that at T2(P>0.05). △root volumeT3-T2 and △root volumeT4-T3 had no significant difference between the two groups(P>0.05). △root volumeT3-T2 in the adolescent group was significantly smaller than that in the adult group(P<0.05). Correlation analysis showed that the △root volumeT1-T2 was significantly positively correlated with age(P<0.05), meanwhile △root volumeT3-T2 and △root volumeT4-T3 were negatively correlated with age(P<0.05). CONCLUSIONS: Age is an important factor affecting the volume of root after orthodontic treatment. Adolescent patients with Class II division 1 malocclusion have a strong ability of self-healing af-ter orthodontic treatment.

关 键 词：青少年 成人 错[牙合]畸形 正畸治疗 上颌切牙 牙根吸收 

分 类 号：R783.5[医药卫生—口腔医学]