치과 임플랜트 보철 수복시 각 상부구조의 형태에 따라 발생되는 응력의 광탄성학적 분석
PHOTOELASTIC ANALYSIS OF STRESSES INDUCED BY VARIOUS SUPERSTRUCTURES ON THE ENDOSTEAL IMPALNT
최영희, 조인호,
소속 상세정보
최영희 ( Choi Young-Hee ) - Dankook University College of Dentistry Department of Prosthodontics
조인호 ( Cho In-Ho ) - Dankook University College of Dentistry Department of Prosthodontics
KMID : 0362819920120010041
Abstract
The osseointegrated implant conducts the stress directly to the bone due to lack of cushioning effect of periodontal ligament. So，the design and material quality of superstructure plays an important role in resolution and diffusion of stress. Recently, the various superstructures have been developed to improve esthetics and resolve various complicated conditions. The purpose of this study was to evaluate the stress induced by various system on the oseointegrated implant using UCLA abutment, EsthetiCone abutment, Anatomic abutment as well as Branemark conventional abutment. The stress distribution was evaluated by the photoelastic method which can simultaneously observe all around stress distribution. The superstructures embedded in epoxy resion specimen were loaded at various angle with a force of 15kg to analyse the stress distribution of the fixture. 1. Under vertical loading, the large and broad stress was distributed below the fixture in all systems. 2. The firnge order of the stress was increased in proportion to tilting the specimen. The largest stress was shown in 25 angled degree tilting case. 3. The Branemakr conventional abutment showed the lowest value, and EsthetiCone abutment, Anatomic abutment and UCLA abutment showed the stress value in accending order.
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