Effects of LEDs on Microhardness and Temperature Rise of Dental Composite Resins
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概要
- 論文の詳細を見る
The purpose of this study was to examine the effects of LEDs on the polymerization of dental composite resins. Three composite resins and two LED units were used to evaluate the latter's effects on microhardness and temperature rise. In particular, two composite resins contained a coinitiator in addition to camphorquinone (CQ). The emission peak of the tested LEDs matched well with the absorption peak of CQ, while G-Light had one additional but weak peak near 410 nm. As for the coinitiators, their absorption peaks were lower than 400 nm. Within the specimens, incident photons from the LED units showed an exponential decrease in their counts as the specimens became thicker. However, microhardness values decreased and became almost linear at subsurface levels regardless of the curing unit. Among the composite resins, Z250 showed the highest microhardness value. As for the temperature rise (℃) due to exothermic reaction at polymerization, it was higher than 5℃ for the 40-second light curing with both LED units. Among the specimens, Solitaire 2 cured with G-Light showed the highest temperature rise.
- 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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Jeong Tae-sung
韓国
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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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Jeong Tae-sung
Department Of Pediatric Dentistry School Of Dentistry Pusan National University
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Jeong Tae-sung
Department Of Pediatric Dentistry College Of Dentistry Pusan National University
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Kim Jong-hwa
Korea Basic Science Institute At Daegu Branch Kyungpook National University
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KIM Young-Ran
Department of Pediatric Dentistry, College of Dentistry, Pusan National University
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Kwon Yong
Department Of Agricultural Biology Kyungpook National University
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Kim Young-ran
Department Of Pediatric Dentistry College Of Dentistry Pusan National University
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Kim Young
National Research Laboratory Of Molecular Microbial Pathogenesis Research Institute Of Vibrio Infect
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Jeong Tae-sung
Department Of Pediartric Dentistry School Of Dentistry Pusan National University
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JEONG Tae-sung
Department of Dentistry The graduate school Pusan National University
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