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치과 보철/수복재료의 기계적 특성에 대한 규격화 시험법과 응용
임용운(Yong-Woon Im),전수경(Soo-Kyung Jun),김시철(Si-Chul Kim),김동애(Dong-Ae Kim),김규리(Gyu-Ri Kim),김남석(Nam-Suck Kim),이해형(Hae-Hyoung Lee) 대한치과재료학회 2015 대한치과재료학회지 Vol.42 No.3
A number of mechanical test protocols have been developed to evaluate the mechanical properties for dental prosthetic and conservative materials. This review article presents and discusses internationally standardized test methods including uniaxial and biaxial flexural test, compressive and diametral tensile tests, Weibull reliability test, fracture toughness tests, and their applications. There has been little information on the relationship between the results from standardized tests and clinical performance for dental materials. Thus, the mechanical properties resulting from standard tests can merely be used in evaluation of mechanical quality among various candidates. For more practical evaluation of mechanical performance of dental materials, there are needs for developing a quasi-clinical test protocol under considerations with stress concentration and distribution and clinical complexity. Furthermore, those results should be compared with the mechanical properties resulting from standardized tests.
김광만(Kwang-Mahn Kim) 대한치과의사협회 2015 대한치과의사협회지 Vol.53 No.3
Cementation is the last procedure and an important factor to access successful fixed prosthodontic treatment. Even though there are many kinds of luting materials in dental field, the resin cements are popularly used in now. Metals, polymers and ceramics are used as a material of fixed dental prosthesis. The bonding mechanisms between teeth and fixed restorations are composed of mechanical and chemical mechanism. In dentistry, we are relying on mechanical bonding, but we tried to get chemical bonding and many ways are introduced. So, we have to approach luting procedure differently by the materials of prosthesis for clinical success. In this article, let us think the proper cementation ways according to each prosthesis material.
치과 CAD-CAM용 임시 수복재의 색 안정성 비교 연구
이혜은,김원수,김정숙,이주희,원석재 대한치과기공학회 2016 대한치과기공학회지 Vol.38 No.3
Purpose: This study was conducted to examine the color stability of temporary prosthetic materials for dental CADCAM. Method: 2 kinds of existing acrylic resin temporary filling materials and 2 kinds of polymer prosthetic materials for dental CAD-CAM were used for testing, and five specimens respectively were absorbed in soy sauce, red pepper paste, and coffee. A Chroma Meter was used as analysis equipment. The color change of the specimens was observed to calculate ΔE value throughout 2 days, 3 days, 4 days, and 5 days and this was analyzed and the following result was obtained. Results: Snap’s ΔE value was bigger than Vipi block(p<0.05). Red pepper paste had the largest impact on the color change of resin(ΔE), followed by soy sauce and coffee(p<0.000). With the passage of time, ΔE value was inversely(-) related and decreased somewhat(p<0.000).