乌鲁木齐562例汉族青少年正畸需要量的研究

目的确定乌鲁木齐市汉族青少年正畸治疗的需要量.方法根据随机化原则,按分层整群抽样的方法选取562例11～19岁汉族青少年的硬石膏模型,应用错严重程度指数(MSI)确定是否需要正畸治疗的量.结果男性MSI分值为21.91±17.09,女性MSI分值为22.28±17.26,无性别差异(P＞0.05).根据MSI的分数分类,男性需正畸治疗者为54.55%,女性为55.40%.结论乌鲁木齐市汉族青少年中需要正畸者较多,应加强防治力量.错严重程度指标是确定正畸需要量的一个准确、可信、使用简便的指数,值得推广应用.

The Prevalence of Orthodontic Treatment Need in Urumqi Han''''s Adolescent

OBJECTIVE: To assess the severity of malocclusion and the need for orthodontic treatment in Urumqi Hans' adolescent. METHODS: 562 children aged from 11-19 years old were chosen randomly and were investigated. The severity of malocclusion and the need for orthodontic treatment were assessed using the Malocclusion Severity Index (MSI, Hill PA 1992). RESULTS: The MSI scores for this population were 21.91 +/- 17.09 in male and 22.28 +/- 17.26 in female, respectively, there were no significant differences between sexes (P > 0.05). According to the classifications of MSI scores, the rates of the need for orthodontic treatment were 54.55% in male and 55.40% in female. CONCLUSIONS: (1) The rates of orthodontic treatment need in Urumqi Hans' adolescent were highly frequent. (2) The MSI is a simple precise valid index for assessing the orthodontic Treatment Need. It is suggested to be used widely.