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Title: 0385 - Effect of OSA on Treatment of Class II Hyperdivergent Patients

Authors:

Tingting Zhao, School and Hospital of Stomatology, Wuhan University
Peter Ngan, West Virginia University
Fang Hua, School and Hospital of Stomatology, Wuhan University
Jie Zheng, School and Hospital of Stomatology, Wuhan University
Shunquan Zhou, School and Hospital of Stomatology, Wuhan University
Man Zhang, School and Hospital of Stomatology, Wuhan University
Hui Xiong, School and Hospital of Stomatology, Wuhan University
Hong He (Presenter)
School and Hospital of Stomatology, Wuhan University

Abstract:

Objectives: To conduct a pilot study to determine if the presence of obstructive sleep apnea (OSA) influences the orthodontic treatment outcome of Class II hyperdivergent patients receiving comprehensive orthodontic treatment.

Methods: Patients between the age of 12 and 14 who received orthodontic treatment, at the Hospital of Stomatology, Wuhan University, China were included in this study. Patients were divided into two groups: the OSA group and the control group based on the outcome of pre-treatment polysomnography findings and lateral cephalometric radiograph examination. Patients in the control group were matched with the OSA group in age, sex, ethnicity, weight and height. Cephalometric measurements were used to record the skeletal and dental changes before and after treatment. Data were analyzed using the t test.

Results: 23 OSA patients and 23 control patients were included. After comprehensive orthodontic treatment, the mandibular plane angle (SN-GoMe), articular angle (SArGo), sum of Jaraback angles (SUM) and the lower gonial angle (NGoMe) were found to increase significantly in the OSA group but remained unchanged or decreased slightly in the control group (P<0.05). In the non-OSA group, the growth pattern became more horizontal. In contrast, in the OSA group the growth pattern became more vertical. Otherwise, similar treatment results were obtained in both groups in terms of sagittal change and occlusion.

Conclusions: The presence of OSA in pediatric patients has a deleterious effect on the development of hyperdivergent malocclusions. Early diagnosis and management of pediatric OSA may improve the orthodontic treatment outcome of these patients.

Disclosure Statement:
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE

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