Reliability assessment and correlation analysis of evaluating orthodontic treatment outcome in Chinese patients.

Guang-ying Song; Zhi-he Zhao; Yin Ding; Yu-xing Bai; Lin Wang; Hong HE; Gang Shen; Wei-ran LI; Sheldon Baumrind; Zhi Geng; Tian-min XU

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Reliability assessment and correlation analysis of evaluating orthodontic treatment outcome in Chinese patients.

Author: Guang-Ying SONG ¹ ; Zhi-He ZHAO ² ; Yin DING ³ ; Yu-Xing BAI ⁴ ; Lin WANG ⁵ ; Hong HE ⁶ ; Gang SHEN ⁷ ; Wei-Ran LI ¹ ; Sheldon BAUMRIND ⁸ ; Zhi GENG ⁹ ; Tian-Min XU ¹
Author Information

1. Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China.
2. State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
3. Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China.
4. Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China.
5. Department of Orthodontics, Institute of Stomatology, Nanjing Medical University, Nanjing, China.
6. 1] Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China [2] Key Laboratory for Oral Biomedical Engineering, Wuhan University, Wuhan, China.
7. Department of Orthodontics, School of Stomatology, Shanghai Jiao Tong University, Shanghai, China.
8. Department of Orthodontics, School of Dentistry, University of the Pacific, San Francisco, USA.
9. School of Mathematical Sciences, Peking University, Beijing, China.
Publication Type:Journal Article
MeSH: Adolescent; Cephalometry; standards; China; Dental Models; standards; Esthetics, Dental; Female; Humans; Male; Malocclusion, Angle Class I; therapy; Malocclusion, Angle Class II; therapy; Malocclusion, Angle Class III; therapy; Orthodontics; standards; Peer Review, Health Care; standards; Photography; standards; Reproducibility of Results; Treatment Outcome
From: International Journal of Oral Science 2014;6(1):50-55
CountryChina
Language:English
Abstract: This study aimed to assess the reliability of experienced Chinese orthodontists in evaluating treatment outcome and to determine the correlations between three diagnostic information sources. Sixty-nine experienced Chinese orthodontic specialists each evaluated the outcome of orthodontic treatment of 108 Chinese patients. Three different information sources: study casts (SC), lateral cephalometric X-ray images (LX) and facial photographs (PH) were generated at the end of treatment for 108 patients selected randomly from six orthodontic treatment centers throughout China. Six different assessments of treatment outcome were made by each orthodontist using data from the three information sources separately and in combination. Each assessment included both ranking and grading for each patient. The rankings of each of the 69 judges for the 108 patients were correlated with the rankings of each of the other judges yielding 13 873 Spearman rs values, ranging from -0.08 to +0.85. Of these, 90% were greater than 0.4, showing moderate-to-high consistency among the 69 orthodontists. In the combined evaluations, study casts were the most significant predictive component (R(2)=0.86, P<0.000 1), while the inclusion of lateral cephalometric films and facial photographs also contributed to a more comprehensive assessment (R(2)=0.96, P<0.000 1). Grading scores for SC+LX and SC+PH were highly significantly correlated with those for SC+LX+PH (r(SC+LX)vs.(SC+LX+PH)=0.96, r(SC+PH)vs.(SC+LX+PH)=0.97), showing that either SC+LX or SC+PH is an excellent substitute for all three combined assessment.