A comparison of fixation methods using three-dimensional finite element analysis following anterior segmental osteotomy

• 영문명: A comparison of fixation methods using three-dimensional finite element analysis following anterior segmental osteotomy
• 발행기관: 대한구강악안면외과학회
• 저자명: Kyoung In Yun Min-Kyu Park Myung-Kyun Park Je Uk Park
• 간행물 정보: 『대한구강악안면외과학회지』대한구강악안면외과학회지 제38권 제6호, 332~336쪽, 전체 5쪽
• 주제분류: 의약학 > 내과학
• 파일형태: PDF
• 발행일자: 2012.12.30

영문 초록

Objectives: This study sought to evaluate fixation methods and determine the best method for the postoperative stabilization of maxillary osteotomy. For our analysis we performed a three-dimensional finite element analysis of stress distribution on the plate, screw, and surrounding bone, as well as displacement onto the plate. Materials and Methods: We generated a model using synthetic skull scan data; an initital surface model was changed to a solid model using software. Modified anterior segmental osteotomy (using Park’s method) was made using the program, and four different types of fixation methods were used. An anterior load of 100 N was applied on the palatal surface of two central incisors. Results: The Type 1 (L-shaped) fixation method gave stresses of 187.8 MPa at the plate, 45.8 MPa at the screw, and 15.4 MPa at the bone around the plate. The Type 2 (I-shaped) fixation method gave stresses of 186.6 MPa at the plate, 75.7 MPa at the screw, and 13.8 MPa at the bone around the plate. The Type 3 (inverted L-shaped) fixation method gave stresses of 28.6 MPa at the plate, 29.9 MPa at the screw, and 15.3 MPa at the bone around the plate. The Type 4 (I-shaped) fixation method gave stresses of 34.8 MPa at the plate, 36.9 MPa at the screw, and 14.9 MPa at the bone around the plate. The deflection of the plates for the four fixation methods was 0.014 mm, 0.022 mm, 0.017 mm, and 0.018 mm, respectively. Conclusion: The Type 3 (inverted L-shaped) fixation method offers more stability than the other fixation methods. We therefore recommend this method for the postoperative stabilization of maxillary osteotomy.

목차

I. Introduction

II. Materials and Methods

III. Results

IV. Discussion

V. Conclusion

키워드

Anterior segmental osteotomy Fixation techniques 3D finite element analysis