Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
권호 표지

Cephalometric Evaluation of the Midfacial Soft Tissue Changes on Smiling

두부규격 방사선 사진을 이용한 미소 시의 중안면부 연조직의 변화량 측정

  • Cheon, Kang-Yong (Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center) ;
  • Shin, Dong-Whan (Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center) ;
  • Chun, Won-Bae (Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center) ;
  • Kim, Soo-Ho (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Kim, Eu-Gene (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Park, Hyong-Wook (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Cho, Jin-Yong (Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center) ;
  • Yun, Jun-Yong (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Seo, Mi-Hyun (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Lee, Won-Deok (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Suh, Je-Duck (Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University) ;
  • Lee, Ho (Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center)
  • 천강용 (서울대학교 보라매병원 치과 구강악안면외과) ;
  • 신동환 (서울대학교 보라매병원 치과 구강악안면외과) ;
  • 전원배 (서울대학교 보라매병원 치과 구강악안면외과) ;
  • 김수호 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 김유진 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 박형욱 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 조진용 (서울대학교 보라매병원 치과 구강악안면외과) ;
  • 윤준용 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 서미현 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 이원덕 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 서제덕 (서울대학교 치의학대학원 구강악안면외과학교실) ;
  • 이호 (서울대학교 보라매병원 치과 구강악안면외과)
  • Received : 2012.10.17
  • Accepted : 2012.11.27
  • Published : 2012.11.30
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Abstract

Purpose: The aim of this study is to compare the soft tissue changes of the midfacial area at the repose position and the natural smiling position for the improvement of evaluation and planning in the orthognathic surgery. Methods: The total of 30 subjects, 15 male and 15 female, were included in this study. The metal point landmarks were placed at the cheek, orbital rim, subpupil, and nasal base. The movements of the landmarks were evaluated at the repose position and smiling position in the lateral and posteroanterior cephalograms. Paired t test and correlation analysis were used for the evaluation of the soft tissue changes statistically. Results: In the lateral cephalograms, the cheek point (4.49 mm in female, 4.87 mm in male) showed the most distant movement. All points presented significant movements, except the orbital rim and nasal base point in male. Cheek point presented significant positive correlation between the horizontal and vertical change in male. Subpupil point presented significant positive correlation between horizontal and vertical change in both male and female. In the posteroanterior cephalograms, the nasal base point (5.41 mm in female, 6.30 mm in male) showed the most distant movement. Subpupil point and nasal base point presented significant movements in both female and male. Nasal base point presented significant negative correlation between the horizontal and vertical change in both male and female. In the lateral and posteroanterior cephalograms, the positional changes of all points presented significant positive correlation with each other in both female and male. Conclusion: The cheek point in the sagittal view and the nasal base point in the frontal view showed the most distant movement on smile. In the sagittal view, the subpupil point and cheek point moved anteriorsuperiorly on smile. In the frontal view, the nasal base points moved laterosuperiorly on smile. In both the sagittal and frontal view, the positional changes of all point were highly correlated to each other. These results may be used in the soft tissue references for the treatment planning of the dentofacial deformity patients.

Keywords

References

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