Maxillofacial Plastic and Reconstructive Surgery

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

A Clinical Study of Soft Tissue Changes of the Midface after Mandibular Setback Surgery

하악골 후방이동시 중안면부 연조직의 변화양상에 대한 임상통계학적 연구

  • Han, Dae-Hee (Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University) ;
  • Kim, Soo-Nam (Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University) ;
  • Min, Seung-Ki (Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University) ;
  • Kim, Tae-Seong (Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University) ;
  • Sung, Hun-Mo (Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University)
  • 한대희 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 김수남 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 민승기 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 김태성 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 성헌모 (원광대학교 치과대학 구강악안면외과학교실)
  • Published : 2000.09.30
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Abstract

Prediction of the soft tissue changes following hard tissue movement is very important from the esthetic view point for patients who have orthognathic surgery. There are many cephalometric analysis of facial bone and soft tissue on the lower lip and chin region but few soft tissue analysis on the midface after mandibular setback surgery. This study was performed to obtain whether the mandibular posterior movement has influence on the midface and the predictable ratio of post-operative measurement values of the soft tissue changes following mandibular setback surgery. Fifteen patients (8 males and 7 females) who had undergone mandibular setback surgery were selected and analyzed the soft tissue movement on the upper lip and the cheek region. Post-operative changes of the soft tissue measurements after mandibular surgery were examined on pre- and post-operative cephalometrics and the ratio of changes were analyzed after drawing the reference line on the face with the barium sulfate solution. The reference lines were perpendicular to the intercanthal line from infraorbital foramen and lateral canthus. The results obtained were as follows : 1. There were tendancy of anterior movement of soft tissue adjacent the nose after mandibular surgery 2. There were incerased tendancy of the amount of anterior movement from the nasal crease to the cheek region. 3. The amount of anterior movement of the soft tissue was larger below the palatal plane compared with above the palatal plane in the cheek region. 4. The upper lip length was increased and moved posterior direction after mandibular setback surgery 5. The lower lip was moved posterior direction by posterior movement of the mandibular structure 6. Soft tissue of the midface around the nose moved anterior direction after mandibular setback surgery but there was no correlation between the amount of mandibular setback and the amount of the soft tissue changes

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