Sleep Disordered Breathing
Maxillofacial characteristics of adenoidal and/or tonsillar hypertrophy related skeletal class Ⅱ malocclusion in children with mixed dentition
Yu Qian, Zhu Yanfei, Sun Huijun, Xu Shuhua, Hu Jiaxin, Zhu Min
Published 2019-12-20
Cite as Chin J Orthod, 2019,26(04): 183-188. DOI: 10.3760/cma.j.issn.1674-5760.2019.04.002
Abstract
ObjectiveTo explore the effects of adenoidal and/ortonsillar hypertrophy on the development of maxillofacial structures in skeletal Class Ⅱ malocclusion with mixed dentition.
Methods56 mixed dentition patients with skeletal class Ⅱ malocclusion were included. They were grouped according to the sites of upper airway obstruction and self-examination results on mouth breathing. Cephalometrics were done and statistically analyzed.
ResultsThe lower facial height of patients with no mouth-breathing and no obstruction is significantly shorter than that of patients with adenoidal hypertrophy combing with or without tonsillar hypertrophy, and shorter than that of patients with mouth-breathing but no obstruction. The lower facial height of patients with tonsillar hypertrophy is significantly shorter than that of patients with adenoidal hypertrophy, mouth-breathing but no obstruction. The anterior lower facial height and posterior lower facial height in patients without mouth-breathing and no obstruction are significantly shorter than that in patients with mouth-breathing with or without obstruction.
ConclusionsAdenoidal and/or tonsillar hypertrophy is strongly related with mouth-breathing. Even without airway obstruction, habitual mouth-breathing can still induce long facial height and high angle skeletal class Ⅱ characteristics in mixed dentition patients.
Key words:
Adenoids; Tonsils; Mouth-breathing; Class Ⅱ malocclusion
Contributor Information
Yu Qian
Department of Stomatology, Zhongshan Hospital of Fudan University, Shanghai 200032, China
Zhu Yanfei
Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
Sun Huijun
Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
Xu Shuhua
Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
Hu Jiaxin
Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
Zhu Min
Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
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