青少年安氏Ⅱ^(2)类错[牙合]畸形矫治后下颌骨的变化  

Study of the mandibular changes after treatment of ClassⅡdivision 2 malocclusion in adolescents

作　　者：周明智 王林[2] 王亮 吴可 秦燕军[1] 赵春洋[2] ZHOU Ming-zhi;WANG Lin;WANG Liang;WU Ke;QIN Yan-jun;ZHAO Chun-yang(Department of Orthodontics,Changzhou Stomatological Hospital.Changzhou 213003;Department of Orthodontics,Affiliated Stomatological Hospital of Nanjing Medical University,Jiangsu Key Laboratory of Oral Diseases,Nanjing Medical University.Nanjing 210029;Department of Orthodontics,Affiliated Suzhou Huaxia Stomatological Hospital of Suzhou Vocational Health College.Suzhou 215002,Jiangsu Province,China)

机构地区：[1]常州市口腔医院正畸科,江苏常州213003 [2]南京医科大学附属口腔医院正畸科,南京医科大学口腔疾病研究江苏省重点实验室,江苏南京210029 [3]苏州卫生职业技术学院附属苏州市华夏口腔医院正畸科,江苏苏州215002

出　　处：《上海口腔医学》2022年第4期389-394,共6页Shanghai Journal of Stomatology

基　　金：国家自然科学基金(81830031);江苏省高校优势学科建设工程项目(2018—87);科教强卫口腔正畸学(ZDXKA2016026)。

摘　　要：目的:探讨青少年安氏Ⅱ^(2)类错[牙合]矫治后下颌骨及下颌牙槽骨的改建。方法:选择本院就诊患者36例,其中12例青春发育期安氏Ⅱ^(2)类错[牙合]患者作为试验组,12例成人安氏Ⅱ2类错[牙合]患者作为对照Ⅰ组,12例青春发育期安氏Ⅰ类错[牙合]患者作为对照Ⅱ组。治疗前、后拍摄锥形束CT(cone-beam CT,CBCT)或头颅侧位片,分析3组矫治前、后下颌骨及下颌牙槽骨各项测量指标的改变,探讨青少年安氏Ⅱ2类错[牙合]矫治后下颌骨及下颌牙槽骨的改建。采用SPSS 21.0软件包对测量数据进行统计学分析。结果:治疗后,青少年安氏Ⅱ^(2)类患者下颌骨长度(GO-GN)、下颌支高度(Co-Go)、下颌骨突度(SNB)及下牙槽骨突度(SNId)、下面高(S-GO、ANS-Me、ANS-Me/N-Me)增加,颏凹陷减小(P<0.05)。成人安氏Ⅱ^(2)类患者治疗后各项测量指标无显著变化(P>0.05)。矫治后,青少年安氏Ⅱ^(2)类患者下颌骨突度(SNB)、下颌牙槽骨突度(SNId)及前下面高比(ANS-Me/N-Me)与安氏Ⅰ类患者的差异减小。结论:及时矫治青少年安氏Ⅱ^(2)类错[牙合],可释放下颌骨及下颌牙槽骨的生长潜力,促进其生长改建。PURPOSE:To evaluate the mandibular and dentoalveolar changes in ClassⅡdivision 2 malocclusion adolescents after treatment.METHODS:Thirty-six patients treated in our hospital were selected.Twelve skeletal ClassⅡdivision 2 adolescents were served as the experimental group,while 12 skeletal ClassⅡdivision 2 adults were selected as the control group 1,12 skeletal ClassⅠadolescents were selected from those who have undergone fixed orthodontic treatment as the control group 2.Cone-beam CT(CBCT)was taken before and after treatment.The lateral cephalometric radiographs generated from CBCT data were committed to explore the changes of the mandible and dentoalveolar bone before and after orthodontic treatment among three groups.Statistic analysis was completed by SPSS 21.0 software package.RESULTS:After orthodontic treatment,the mandibular length(Go-Gn),mandibular ramus height(Co-Go),mandibular protrusion(SNB),mandibular dentoalveolus protrusion(SNId),lower facial height(S-Go,ANS-Me,ANS-Me/N-Me)increased and the fossa of chin decreased significantly in ClassⅡdivision 2 adolescents(P<0.05).The differences of SNB,SNId,ANS-Me/N-Me between ClassⅡdivision 2 and ClassⅠadolescents decreased.CONCLUSIONS:The growth potential of the mandible is released after treatment of ClassⅡdivision 2 malocclusion adolescents,promoting mandibular growth and reconstruction.

关 键 词：安氏Ⅱ^(2)类错[牙合] 闭锁型深覆[牙合] 下颌骨 下颌牙槽骨 生长发育 

分 类 号：R783.5[医药卫生—口腔医学]