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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 77 - 82 (6page)
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초록· 키워드
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Objectives: The aim of this study was to compare the mechanical resistance of four different osteosyntheses modeled in two different sagittal split ramus osteotomy (SSRO) designs and to determine the linear loading in a universal testing machine.
Materials and Methods: An in vitro experiment was conducted with 40 polyurethane hemimandibles. The samples were divided into two groups based on osteotomy design; Group I, right angles between osteotomies and Group II, no right angles between osteotomies. In each group, the hemimandibles were distributed into four subgroups according to the osteosynthesis method, using one 4-hole 2.0 mm conventional or locking plate, with or without one bicortical screw with a length of 12.0 mm (hybrid technique). Each subgroup contained five samples and was subjected to a linear loading test in a universal testing machine.
Results: The peak load and peak displacement were compared for statistical significance using PASW Statistics 18.0 (IBM Co., USA). In general, there was no difference between the peak load and peak displacement related to osteotomy design. However, when the subgroups were compared, the osteotomy without right angles offered higher mechanical resistance when one conventional or locking 2.0 mm plate was used. One locking plate with one bicortical screw showed higher mechanical resistance (162.72±42.55 N), and these results were statistically significantly compared to one conventional plate with monocortical screws (P=0.016) and one locking plate with monocortical screws (P=0.012). The difference in peak displacement was not statistically significant based on osteotomy design or internal fixation system configuration.
Conclusion: The placement of one bicortical screw in the distal region promoted better stabilization of SSRO. The osteotomy design did not influence the mechanical behavior of SSRO when the hybrid technique was applied.
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참고문헌 (18)
참고문헌 신청
Andrade VC / 2014 / Photoelastic evaluation of two different sagittal split ramus osteotomies in advancement surgery / Int J Clin Exp Med 7 : 1940 ~ 1944
Bockmann R / 2015 / The modifications of the sagittal ramus split osteotomy: a literature review / Plast Reconstr Surg Glob Open 2 : e271 ~
Chiodo TA / 2006 / Failure strength of 2.0 locking versus 2.0 conventional Synthes mandibular plates: a laboratory model / J Oral Maxillofac Surg 64 : 1475 ~ 1479
Chuong CJ / 2005 / Mechanical characteristics of the mandible after bilateral sagittal split ramus osteotomy: comparing 2 different fixation techniques / J Oral Maxillofac Su
Dal Pont G / 1959 / Retro-molar osteotomy for correction of prognathism / Minerva Chir 14 : 1138 ~ 1141
Bockmann R / 2015 / The modifications of the sagittal ramus split osteotomy: a literature review / Plast Reconstr Surg Glob Open 2 : e271 ~
Chiodo TA / 2006 / Failure strength of 2.0 locking versus 2.0 conventional Synthes mandibular plates: a laboratory model / J Oral Maxillofac Surg 64 : 1475 ~ 1479
Chuong CJ / 2005 / Mechanical characteristics of the mandible after bilateral sagittal split ramus osteotomy: comparing 2 different fixation techniques / J Oral Maxillofac Su
Dal Pont G / 1959 / Retro-molar osteotomy for correction of prognathism / Minerva Chir 14 : 1138 ~ 1141
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