Maxillofacial Plastic and Reconstructive Surgery

  • 제32권3호
  • /
  • Pages.207-217
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  • 2010
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  • 2288-8101(pISSN)
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  • 2288-8586(eISSN)
대한악안면성형재건외과학회 (Korean Association of Maxillofacial Plastic and Reconstructive Surgeons)
권호 표지

하악각 골절의 치료 방법에 따른 하악골의 응력 분포 및 변위에 관한 삼차원 유한요소법적 연구

THE THREE DIMENSIONAL FINITE ELEMENT ANALYSIS OF STRESS DISTRIBUTION AND DISPLACEMENT IN MANDIBLE ACCORDING TO TREATMENT MODALITIES OF MANDIBULAR ANGLE FRACTURES

  • 구제훈 (인하대학교 의과대학 치과학교실 구강악안면외과) ;
  • 김일규 (인하대학교 의과대학 치과학교실 구강악안면외과) ;
  • 장재원 (인하대학교 의과대학 치과학교실 구강악안면외과) ;
  • 양정은 (인하대학교 의과대학 치과학교실 구강악안면외과) ;
  • 사시카라 바라라만 (인하대학교 의과대학 치과학교실 구강악안면외과) ;
  • 왕붕 (인하대학교 의과대학 치과학교실 구강악안면외과)
  • Ku, Je-Hoon (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University) ;
  • Kim, Il-Kyu (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University) ;
  • Chang, Jae-Won (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University) ;
  • Yang, Jung-Eun (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University) ;
  • Sasikala, Balaraman (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University) ;
  • Wang, Boon (Department of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, In-Ha University)
  • 투고 : 2010.03.30
  • 심사 : 2010.05.06
  • 발행 : 2010.05.31
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초록

The purpose of this study was to evaluate the effects of the stress distribution and displacement in mandible according to treatment modalities of mandibular angle fractures, using a three dimensional finite element analysis. A mechanical model of an edentulous mandible was generated from 3D scan. A 100-N axial load and four masticatory muscular supporting system were applied to this model. According to the number, location and materials of titanium and biodegradable polymer plates, the experimental groups were divided into five types. Type I had a single titanium plate in the superior border of mandibular angle, type II had two titanium plates in the superior tension border and in the inferior compression border of mandibular angle, type III had a single titanium plate in the ventral area of mandibular angle, type IV had a single biodegradable polymer plate in the superior border of mandibular angle, type V had a single biodegradable polymer plate in the ventral area of mandibular angle. The results obtained from this study were follows: 1. Stress was concentrated on the condylar neck of the fractured side except Type III. 2. The values of von-Mises stress of the screws were the highest in the just-posterior screw of the fracture line, and in the just-anterior screw of Type III. 3. The displacement of mandible in Type III was 0.04 mm, and in Type I, II, IV, and V were 0.10 mm. 4. The plates were the most stable in the ventral area of mandibular angle (Type III, V). In conclusion, the ventral area of mandibular angle is the most stable location in the fixation of mandibular angle fractures, and the just- posterior and/or the just-anterior screws of the fracture line must be longer than the other, and surgeons have to fix accurately these screws, and the biodegradable polymer plate also was suitable for the treatment of mandible angle fracture.

키워드

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