Nguyen Son Minh, Nguyen Minh Khac, Saag Mare, Jagomagi Triin
Da Nang University of Medical Technology and Pharmacy, 99 Hung Vuong, Da Nang 59000, Vietnam.
Department of Stomatology, University of Tartu, Raekojapl 6, 51003 Tartu, Estonia.
Int J Dent. 2014;2014:132301. doi: 10.1155/2014/132301. Epub 2014 Jul 21.
Objective. The aim of this study was to evaluate the need for orthodontic treatment among 12-year-old school children and 18-year-olds from Da Nang, Vietnam. Basic Research Design. A random representative sample of 200 12-year-old children from primary schools in Da Nang city was gathered. In addition, 200 18-year-old students were randomly selected from among the 4000 students studying at Da Nang University of Medical Technology and Pharmacy, Vietnam. All the subjects were evaluated according to Angle's molar relationship, the presence of malocclusion, and the components of the Index of Orthodontic Treatment Need (Dental Health Component, DHC, and Aesthetic Component, AC). Results. The DHC of index of orthodontic treatment need (IOTN) for 12-year-olds was in 60% of cases no or little, in 21% of cases moderate, and in 19% of cases definitive, while the prevalence of moderate and definitive need for treatment among the 18-year-olds was 24% and 30.5%, respectively. The prevalence of class III malocclusion, contact point displacement, and crossbite was higher in 18-year-olds than among the 12-year-olds, while the prevalence of increased overjet and increased overbite had decreased in 18-year-olds compared to the group of 12-year-olds. Conclusions. There is a strong need for orthodontic treatment in Vietnam's population. The need for orthodontic treatment was determined by contact point displacement, crossbite, increased overjet, and increased overbite.
目的。本研究旨在评估越南岘港市12岁学童和18岁青少年对正畸治疗的需求。基础研究设计。从岘港市小学随机抽取了200名12岁儿童作为代表性样本。此外，从越南岘港医学技术与药学院就读的4000名学生中随机选取了200名18岁学生。所有受试者均根据安氏磨牙关系、错牙合畸形的存在情况以及正畸治疗需求指数的组成部分（口腔健康成分，DHC，和美观成分，AC）进行评估。结果。12岁儿童正畸治疗需求指数（IOTN）的DHC在60%的病例中为无或轻度，21%的病例为中度，19%的病例为重度，而18岁青少年中中度和重度治疗需求的患病率分别为24%和30.5%。18岁青少年中III类错牙合、接触点移位和反牙合的患病率高于12岁儿童，而18岁青少年中覆盖增加和覆牙合增加的患病率与12岁儿童组相比有所下降。结论。越南人群对正畸治疗有强烈需求。正畸治疗需求由接触点移位、反牙合、覆盖增加和覆牙合增加决定。
