Journal of Oral and Maxillofacial Surgery
Volume 67, Issue 5 , Pages 1032-1038, May 2009

Surgical-Orthodontic Treatment of Class III Patients With Long Face Problems: A Retrospective Study

  • Yanli Cao

      Affiliations

    • Graduate Student, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
    • ,
  • Yanheng Zhou, DDS, PhD

      Affiliations

    • Professor, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
    • Corresponding Author InformationAddress correspondence and reprint requests to Dr Zhou: Department of Orthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Nandajie, Haidian District, Beijing 100081, P.R. China
    • ,
  • Zili Li, DDS, PhD

      Affiliations

    • Associate Professor, Department of Orthognathic Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China

Purpose

To describe the surgical procedure in correcting Class III patients with long face problems and to evaluate the lateral cephalometric changes resulting from surgical-orthodontic treatment.

Patients and Methods

Thirty-six Chinese Class III patients with long face problems (14 male, 22 female, with a mean age 24.3 years) were selected in this study. All patients underwent bimaxillary surgery. The surgical approach involved advancement and superior repositioning (greater anteriorly than posteriorly) of the maxilla to permit autorotation and subsequent setback of the mandible. Lateral cephalometric records were taken before the presurgical orthodontic treatment (T1) and after the postsurgical orthodontic treatment (T2). The data were analyzed statistically by using paired t tests.

Results

Anteroposterior and vertical dysplasia were corrected by the surgery. Horizontalization of the occlusal plane was obtained and the gonial angle was closed. The S-Go/N-Me increased 2% (P < .01), whereas ANS-Me/N-Me displayed no significant difference.

Conclusions

The surgical procedure makes it possible to obtain an optimal esthetic and functional result in cases of Class III long face patients. This approach represents a useful option for the treatment of these deformities.

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 This study was supported by the National Key Technology R&D Program (2007BAI18B04).

PII: S0278-2391(08)01819-3

doi:10.1016/j.joms.2008.11.017

Journal of Oral and Maxillofacial Surgery
Volume 67, Issue 5 , Pages 1032-1038, May 2009

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