齒顎矯正治療對微笑變化的影響

Translated title of the contribution: Changes in the Smile after Orthodontic Treatment

藍 鴻文(Hung-Wen Lan), 鄭 信忠(Hsin-Chung Cheng), 李 勝揚(Sheng-Yang Lee), 王 蔚南(Wei-Nan Wang), 蔡 吉陽(Chi-Yang Tsai)

Research output: Contribution to journalArticle

Abstract

The purposes of this research were to discuss changes in the smile after orthodontic treatment and to find the factors affecting smile changes during orthodontic treatment. Pre- and post-treatment frontal smile pictures and lateral cephalometric records were collected from 90 case files of the Specialists Examination of the Taiwan Association of Orthodontists. Pre-and post-treatment smile pictures were coordinated and measured with Adobe Photoshop 4.0 using a personal computer. Seven percentage measurements and fourteen cephalometric measurements were made from all collected pictures and cephalometric tracings, respectively. The post-treatment measurements were subtracted from pretreatment measurements to represent treatment changes in the smile and craniofaciadental morphology. t-test, ANOVA, and Pearson's correlation analysis were used to compare the correlation of the smile and craniofaciadental morphologies between pre- and post-treatment. The results showed that (1) there were no correlations among gender, malocclusion, extraction type, and smile changes; (2) there was a significant statistical difference (p<0.05) between the skeletal type (and age) and some smile changes; and (3) from the cephalometric measurements, U1-SN and U1-NA were significantly correlated with some smile changes (all p<0.05). In conclusion, orthodontic treatments can improve the smile; however, a scientific and objective method to evaluate smile changes still needs to be developed.
Translated title of the contributionChanges in the Smile after Orthodontic Treatment
Original languageTraditional Chinese
Pages (from-to)17-25
Number of pages9
Journal中華牙醫學雜誌(中文版)
Volume26
Issue number1
Publication statusPublished - 2007

Keywords

  • smile
  • orthodontics

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