Changes of Craniomaxillofacial Morphology of Adolescents with Angle Class II Division 2 Malocclusion after Orthodontic Treatment
- VernacularTitle:青少年安氏Ⅱ类2分类错?患者正畸治疗前后颅颌面结构的变化
- Author:
Jing WANG
1
;
Peicheng XU
;
Lei JIN
;
Xuhui SHANGHAI
Author Information
1. 上海市徐汇区牙病防治所
- Keywords:
Angle Class II Division 2 malocclusion;
Adolescents;
Craniomaxillofacial morphology
- From:
Chinese Journal of Clinical Medicine
2015;(2):234-236
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To assess the changes of craniomaxillofacial morphology in adolescents with Angle Class II Division 2 malocclusion after orthodontic treatment .Methods:The indexes of lateral cephalometric radiographs of 12 adolescents with Angle ClassⅡ Division 2 malocclusion before and after orthodontic treatment were measured and analyzed .Results:After orthodontic treatment , length of anterior skull base(SN) increased .There was no significant change in maxillary sagittal length .Go‐Gn ,Cond‐Go ,and total length of mandible(Co‐Gn) increased .S‐Go ,N‐Me ,lower facial height ,and upper facial height ,increased .Palatal plane(ANS‐PNS) and mandibular plane(MP) did not rotate significantly .There was no significant change in S‐Go/N‐Me ration .SNA decreased .No significant change happened to SNB .ANB decreased .Y axis angle increased .A significant positive correlation was found between the changes of SNB and those of mandibular length ,Go‐Gn ,and Gond‐Go .There is also a significant inverse correlation between the changes of ANB and those of Cond‐Go and Mandibular length .Conclusions:The orthodontic treatment can effectively improve craniomaxillofacial morphology defects in adolescents with Class II Division 2 malocclusion .The vertical and horizontal direction growth of mandible is conducive to the correction of Angl Class II malocclusion .
