Araki Miyu, Yasuda Yuko, Ogawa Takuya, Tumurkhuu Tsasan, Ganburged Ganjargal, Bazar Amarsaikhan, Fujiwara Takeo, Moriyama Keiji
Department of Maxillofacial Reconstruction and Function, Division of Maxillofacial/Neck Reconstruction, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.
Department of Prosthodontics and Orthodontics, School of Dentistry, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia.
Int J Environ Res Public Health. 2017 Aug 10;14(8):902. doi: 10.3390/ijerph14080902.
Malocclusion may affect oral health-related quality of life (OHR-QoL), however, the previously detected associations were affected by confounding factors. We hypothesized that there is indeed an association between OHR-QoL and malocclusion and investigated in a population-based study of 420 Mongolian adolescents mean age: 12.6 (standard deviation (SD) = 1.09) years from two secondary schools, located in an urban and a suburban area. We randomly selected two classes from each school. The Index of Orthodontic Treatment Need (IOTN) was used to assess malocclusion. OHR-QoL was assessed using the Child Perceptions Questionnaire (CPQ). Multivariate analysis was used to determine whether malocclusion had an independent effect on OHR-QoL. Overall, the existence of any type of malocclusion was not significantly associated with CPQ results. However, increased overjet was significantly associated with oral symptoms (coefficient: 0.66, 95% CI: 0.14-1.19), functional limitations (coefficient: 0.62, 95% CI: 0.17-1.08), and social well-being (coefficient: 0.50, 95% CI: 0.06-0.93). Deep bite was also significantly associated with oral symptoms (coefficient: 0.54, 95% CI: 0.23-0.84) and functional limitations (coefficient: 0.45, 95% CI: 0.19-0.72). Although malocclusion per se was not significantly associated with OHR-QoL, specific types of malocclusion, i.e., increased overjet and deep bite, were associated with OHR-QoL.
错牙合畸形可能会影响与口腔健康相关的生活质量（OHR-QoL），然而，先前检测到的关联受到混杂因素的影响。我们假设OHR-QoL与错牙合畸形之间确实存在关联，并在一项基于人群的研究中进行了调查，该研究涉及来自位于城市和郊区的两所中学的420名蒙古族青少年，平均年龄为12.6岁（标准差（SD）=1.09）。我们从每所学校中随机选择两个班级。使用正畸治疗需求指数（IOTN）来评估错牙合畸形。使用儿童感知问卷（CPQ）来评估OHR-QoL。采用多变量分析来确定错牙合畸形是否对OHR-QoL有独立影响。总体而言，任何类型错牙合畸形的存在与CPQ结果均无显著关联。然而，覆盖过大与口腔症状（系数：0.66，95%置信区间：0.14-1.19）、功能受限（系数：0.62，95%置信区间：0.17-1.08）以及社会幸福感（系数：0.50，95%置信区间：0.06-0.93）显著相关。深覆牙合也与口腔症状（系数：0.54，95%置信区间：0.23-0.84）和功能受限（系数：0.45，95%置信区间：0.19-0.72）显著相关。虽然错牙合畸形本身与OHR-QoL无显著关联，但特定类型的错牙合畸形，即覆盖过大和深覆牙合，与OHR-QoL相关。
