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RISS 인기검색어
- 검색키워드
- 저자 : 이태엽 ( Tae Yup Lee ) , 강재석 ( Jae Seok Kang ) , 이숭훈 ( Seung Hoon Lee ) , 안옥주 ( Ouk Ju Ahn ) , 강동완 ( Doog Wan Kang ) (검색결과 5 건)
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- 유료
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이태엽,강동완,Lee, Tae-Yup,Kang, Dong-Wan 대한턱관절교합학회 2002 구강회복응용과학지 Vol.16 No.3
Bending moments results from offset overloading of dental implant, which may cause stress concentrations to exceed the physiological capacity of cortical bone and lead to various kinds of mechanical failures. The purpose of this study was to compare the distributing pattern of stress on the finite element models with the different angulated placement of dental implant in mandibular posterior missing areas. The three kinds of finite element model, were designed according to 3 main configurations: Model 1(parallel typed placement of 2 fixtures), Model 2(15. distal angulated placement of one fixture on second molar area), Model 3(15. mesial angulated placement of one fixture on second molar area). The cemented crowns for mandibular first and second molars were made on the two fixtures (4mm 11.5). Three-dimensional finite element models by two fixtures were constructed with the components of the implant and surrounding bone. A 200N vertical static load were applied to the center of central fossa and the point 2mm apart from the center of central fossa on each model. The preprocessing, solving and postprocessing procedures were done by using FEM analysis software NISA/DISPLAY IV Version 10.0((Engineering Mechanics Research Corporation, USA). Von Mises stresses were evaluated and compared in the supporting bone, fixtures, and abutment. The results were as following : (1) Under the point loading at the central fossa, the direction of angulated fixture affected the stress pattern of implants. (2) Under the offset loading, the position of loading affected more on the stress concentration of implants compare to the angulated direction of implants. The results had a tendency to increase the stress on the supporting bone, fixture and screw under the offset loads when the placement angulation of implant fixture is placed toward mesial or distal direction. In designing of the occlusal scheme for angulated placement, placing the occlusal contacts axially during chewing appears to have advantages in a biomechanical viewpoint.
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지하연구시설에서 용질이동 실험을 위한 시험공 시추 및 단열 특성 규명
이재광 ( Jae Kwang Lee ),이태엽 ( Tae Yup Lee ),백민훈 ( Min Hoon Baik ) 한국공업화학회 2010 응용화학 Vol.14 No.2
In-situ solute migration experiments will be accomplished to investigate the solute migration and retardation properties in the KURT (KAERI Underground Research Tunnel), which was established in 2006 for the safety assessment of the disposal of radioactive wastes. For the in-situ experiments, boreholes were drilled and properties of fractures were characterized using Borehole Image Processing System (BIPS). The hydraulic test was also performed to investigate the connectivity of fractures and to obtain hydraulic properties. The results of this research will give information for the in-situ solute migration experiments.
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이태엽,강재석,이승훈,안옥주,강동완 조선대학교 구강생물학연구소 2002 口腔生物學硏究 Vol.26 No.2
Bending moments results from offset overloading of dental implant, which may cause stress concentrations to exceed the Physiological capacity of cortical bone and lead to various kinds of mechanical failures. The purpose of this study was to compare the distributing pattern of stress on the finite element models with the different angulated placement of dental implant in mandibular posterior missing areas. The three kinds of finite element model. were designed according to 3 main configurations: Model 1(parallel typed placement of 2 fixtures). Model 2(15˚ distal angulated placement of one fixture on second molar area). Model 3(15˚ mesial angulated placement of one fixture on second molar area). The cemented crowns for mandibular first and second molars were made on the two fixtures (4㎜ ×11.5). Three-dimensional finite element models by two fixtures were constructed with the components of the implant and surrounding bone. A 200N vertical static load were applied to the center of central fossa and the point 2㎜ apart from the center of central fossa on each model. The Preprocessing, solving and postprocessing procedures were done by using FEM analysis software NISA/DISPLAY Ⅳ Version 10.0((Engineering Mechanics Research Corporation, USA). Von Mises stresses were evaluated and compared in the supporting bone. Fixtures, and abutment . The results were as following: 1. Under the point loading at the central fossa, the direction of angulated fixture affected the stress pattern of implants 2. Under the offset loading, the position of loading affected more on the stress concentration of implants compare to the angulated direction of implants The results had a tendency to increase the stress on the supporting bone, fixture and screw under the offset loads when the placement angulation of implant fixture is placed toward mesial or distal direction, In designing of the occlusal scheme for angulated placement, placing the occlusal contacts axially during chewing appears to have advantages in a biomechanical viewpoint
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