Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제34권3호
  • /
  • Pages.300-305
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  • 2008
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
권호 표지

하악전돌증환자에서 악교정수술후 저작근의 부피 및 교합력의 변화

EFFECT OF MANDIBULAR SET BACK SURGERY ON VOLUMETRIC CHANGE AND BITE FORCE OF MASSETER MUSCLE

  • 설정은 (성균관대학교 의과대학 삼성서울병원 구강악안면외과) ;
  • 이명환 (성균관대학교 의과대학 삼성서울병원 구강악안면외과) ;
  • 김창수 (성균관대학교 의과대학 삼성서울병원 구강악안면외과) ;
  • 홍종락 (성균관대학교 의과대학 삼성서울병원 구강악안면외과)
  • Seol, Jung-Eun (Department of Oral and Maxillofacial Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Lee, Myung-Hwan (Department of Oral and Maxillofacial Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Kim, Chang-Soo (Department of Oral and Maxillofacial Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Hong, Jong-Rak (Department of Oral and Maxillofacial Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 발행 : 2008.06.30
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초록

Purpose: The purpose of our study was to evaluate the volume of pre- and post operative masseter muscle and bite force in mandibular prognathic patients treated with SSRO with the use of the 3D CT imaging technique and occlusal force meter. Materials and methods: The study group consisted of 12 patients with mandibular prognathism (5 males and 7 females) who underwent mandibular setback surgery (BSSRO) in the Department of Oral and Maxillofacial Surgery, Samsung medical center. Bite force was measured at pre op, post op 3, 6 and 12 months by occlusal force meter(GM10, Nagano Keiki, Japan) The preoperative CT examination of subjects was performed between one month prior to operation and one year after to operation. And muscle volume was measured. Result: As compared to preoperative measurements at 1 year postoperatively the masseter & internal pterygoid muscle volume were diminished (p<0.05) The bite force steadily recovered, so at postoperatively 6 months reached the preoperative level. And at 1 year after operation, the maximum bite force was significantly greater than preoperative levels. No significant correlation was presented between masseter muscle and bite force (p>0.05), internal pterygoid muscle and bite force (p>0.05). Conclusion: In this study, the results showed that volume and bite force of the masticatory muscles decreased significantly immediate after orthognathic surgery for mandibular set-back. However, reduction of maximum bite force disappears within 6 months after surgery.

키워드

참고문헌

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