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Maxillary Sinus의 inferior wall의 피질골 두께가 임플란트의 초기안정성에 미치는 영향에 대한 in vitro 연구

Primary Stabillity Analysis of Dental Implants According to Cortical Bone Thickness of Maxillary Sinus Inferior Wall In Vitro

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초록

rimary stability of dental implant is a very important factor of dental implant success. However, few data are available for comparing the primary stability characteristics of less 10mm cancellous and cortical bone thickness. The purpose of this study were to measure the primary implant stability according to sinus inferior wall's cortical bone thickness. Swine bones which have 6,8 and 10 mm bone height and 1 mm and 1.5 mm cortical bone thickness were selected as an experimental model. As treated specimens one side cortical bone was removed. The assemblies were divided into groups of each 30 swine bone specimens according to implant diameter (4.3D group: 4.3mm, 4.8D group: 4.8mm),total bone height (6H group: 6.0mm, 8H group: 8.0mm, 10H group: 10.0mm),and cortical bone thickness (1C: 1.0 mm, 1.5C: 1.5 mm). Implant stability as a function of resonance frequency analysis, peak insertion torque were recorded for each fixture site after placement and removal. The RFA values of 1.5C group was significantly higher than that of 1C group (p < 0.05). The peak insertion torque of 1.5C group was significantly higher than that of 1C group (p < 0.05). Within the limits of this study, thickness of cortical bone have some influences on the primary stability of implants.

Abstract

rimary stability of dental implant is a very important factor of dental implant success. However, few data are available for comparing the primary stability characteristics of less 10mm cancellous and cortical bone thickness. The purpose of this study were to measure the primary implant stability according to sinus inferior wall's cortical bone thickness. Swine bones which have 6,8 and 10 mm bone height and 1 mm and 1.5 mm cortical bone thickness were selected as an experimental model. As treated specimens one side cortical bone was removed. The assemblies were divided into groups of each 30 swine bone specimens according to implant diameter (4.3D group: 4.3mm, 4.8D group: 4.8mm),total bone height (6H group: 6.0mm, 8H group: 8.0mm, 10H group: 10.0mm),and cortical bone thickness (1C: 1.0 mm, 1.5C: 1.5 mm). Implant stability as a function of resonance frequency analysis, peak insertion torque were recorded for each fixture site after placement and removal. The RFA values of 1.5C group was significantly higher than that of 1C group (p < 0.05). The peak insertion torque of 1.5C group was significantly higher than that of 1C group (p < 0.05). Within the limits of this study, thickness of cortical bone have some influences on the primary stability of implants.

참고문헌 (23)

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