中山醫學大學機構典藏 CSMUIR:Item 310902500/15800
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 17918/22933 (78%)
造访人次 : 7437880      在线人数 : 57
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧：
  • 您可在西文检索词汇前后加上"双引号"，以获取较精准的检索结果
  • 若欲以作者姓名搜寻，建议至进阶搜寻限定作者字段，可获得较完整数据
    •  进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://ir.csmu.edu.tw:8080/ir/handle/310902500/15800


    题名: Cephalometric predictor variables for treatment of Class II
    作者: LEE, TZU-HSIN
    贡献者: 中山醫大口腔科學研究所
    关键词: cephalometrics, discriminant analysis, Class II Division 2(Class II/2) malocclusion.
    日期: 2006
    上传时间: 2016-08-15T05:52:50Z (UTC)
    摘要: To many orthodontists, it is clinically relevant to avoid extractions in the treatment of Angle’s Class
    II Division 2 (Class II/2) malocclusions. The most commonly cited side effects from extraction treatment
    are a tendency toward flattening of the facial profile and deepening of the bite. The aim of this study was
    to select a model of cephalometric predictor variables for treatment decision-making for Class II/2
    malocclusions with premolar extraction versus non-extraction. The pretreatment lateral cephalograms
    and study models of 92 patients (46 boys and 46 girls) with a Class II/2 malocclusion were analyzed.
    Discriminant analysis was applied to select pretreatment predictive variables for the treatment options.
    Stepwise variable selection of the cephalometric and model measurements at the first observation
    identified 5 predictive variables ( p < 0.001). In order of significance, they are ANB, overjet (OJ), S to Go
    (S-Go), lower (L) arch-length discrepancy, and lower lip to the E-plane (L lip-E plane). The discriminant
    function generated was Dz = -0.5652(ANB) + 0.6271(OJ) + 0.4126(S-Go) + 0.6183 (L arch-length
    discrepancy) -0.3496(L lip-E plane). Using this discriminant function, a standardized score (Dz) > 0 can
    roughly be translated into non-extraction treatment. For a score < 0, extraction treatment can be
    assigned. The cutoff score for this function was Dz = 0. The group membership correctly classified was
    83.7%. The majority of the misclassified patients were grouped around zero. This study showed that the
    discriminant function was dependent upon ANB, OJ, S to Go, lower arch-length discrepancy, and the
    lower lip to the E-plane in order to make an extraction decision for Class II/2 malocclusions. （J Dent Sci,
    1(1):16-22, 2006）
    URI: https://ir.csmu.edu.tw:8080/ir/handle/310902500/15800
    显示于类别:[口腔醫學研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    16-22.pdf470KbAdobe PDF471检视/开启


    检视Licence

    SFX Query

    在CSMUIR中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈