Orthodontic-surgical treatment of an Angle Class Ⅱ malocclusion patient with mandibular hypoplasia and missing maxillary first molars: A case report  

作　　者：Gui-Feng Li Cai-Xia Zhang Juan Wen Zi-Wei Huang Huang Li 

机构地区：[1]Department of Orthodontics,Nanjing Stomatological Hospital,Medical School of Nanjing University,Nanjing 210000,Jiangsu Province,China

出　　处：《World Journal of Clinical Cases》2022年第33期12278-12288,共11页世界临床病例杂志

基　　金：Supported by the Natural Science Foundation of Jiangsu,No. SBK2021021787;Nanjing Key Project Foundation,No. ZKX20048

摘　　要：BACKGROUND Adult patients presenting with Angle Class II division 1 malocclusions that have a strong skeletal etiology can be challenging for clinicians,particularly if accompanied by retrognathia of the mandible and a dolichofacial growth pattern.CASE SUMMARY In this case report,we describe the successful orthodontic and surgical management of a 20-year-old woman with an Angle Class II malocclusion with a severe anteroposterior skeletal discrepancy characterized by mandibular deficiency.She had incompetent lips,dental and skeletal Class II malocclusion,high mandibular plane angle,mild mandibular crowding,and two missing maxillary first molars.The treatment plan comprised:(1)Extraction of two mandibular second premolars to decompensate and retract mandibular incisors;(2)pre-surgical alignment,leveling,and space closure of the teeth in both arches,and protraction of the second maxillary molars to close the maxillary space;(3)surgical treatment including a LeFort I osteotomy for maxillary retraction and rotation,a bilateral sagittal split osteotomy for mandibular advancement and rotation,and a genioplasty for correctting the skeletal deformities;and(4)post-surgical correction of the malocclusion.CONCLUSION The patient’s facial esthetics was significantly improved and a desirable occlusion was achieved after 16 mo treatment.Follow-up records after 2 years showed stable esthetics and function.

关 键 词：Orthodontic-surgical Class II Mandibular hypoplasia Case report 

分 类 号：R783.5[医药卫生—口腔医学]