The Effects of Light Intensity and Light-curing Time on the Degree of Polymerization of Dental Composite Resins
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概要
- 論文の詳細を見る
The aim of this study was to investigate the effects of light intensity and light-curing time on the polymerization of composite resins. Four composite resins were light-cured with different light-curing conditions. In the non-thermocycled case, specimens showed almost the same or similar microhardness values if energy density was identical or similar. As the energy density decreased, maximum polymerization shrinkage decreased. At higher energy densities, specimens had a lower coefficient of thermal expansion than at lower energy densities. At the same or similar energy density, most resin products showed coefficient values which were not statistically different. After 10,000 thermocycles, specimens showed decreases of 2.4-16.5% and 4.6-25.2% in microhardness and coefficient of thermal expansion respectively. Within the limitations of the present study, it was found that light-curing composite resins with higher energy density was beneficial to acquiring higher microhardness values and lower coefficients of thermal expansion.
- 日本歯科理工学会の論文
著者
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KIM Hyung-Il
Department of Dental Materials, College of Dentistry and Medical Research Institute, Pusan National
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KWON Yong
Department of Dental Materials, College of Dentistry and Medical Research Institute, Pusan National
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Kim Hyung-il
Pusan National Univ. Busan Kor
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Kwon Yong
Pusan National Univ. Busan Kor
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Kwon Yong
Department Of Dental Materials College Of Dentistry And Medical Research Institute Pusan National Un
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Kim H‐i
Department Of Dental Materials College Of Dentistry Pusan National University
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Kim Hyung-il
Department Of Dental Materials College Of Dentistry And Medical Research Institute Pusan National Un
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Kim Hyung-il
Department Of Dental Materials College Of Dentistry Pusan University
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BAEK Chang-Jun
Department of Dental Materials, College of Dentistry and Medical Research Institute, Pusan National
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HYUN Seok-Hee
Depratment of Chemistry, Purdue University
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LEE Sang-Kyu
Department of Dental Materials, College of Dentistry and Medical Research Institute, Pusan National
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SEOL Hyo-Joung
Department of Dental Materials, College of Dentistry and Medical Research Institute, Pusan National
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Kwon Yong
Department Of Agricultural Biology Kyungpook National University
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Lee Sang-kyu
Department Of Dental Materials College Of Dentistry And Medical Research Institute Pusan National Un
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Hyun Seok-hee
Depratment Of Chemistry Purdue University
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Baek Chang-jun
Department Of Dental Materials College Of Dentistry And Medical Research Institute Pusan National Un
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Seol Hyo-joung
Department Of Dental Materials College Of Dentistry And Medical Research Institute Pusan National Un
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