The Exposed Quantities of Bisphenol A from Flowable and Hybrid Composite Resin
권하정, 유수민, 장종화,
소속 상세정보
권하정 ( Kwon Ha-Jeong ) - Kyung Hee University School of Dentistry Department of Preventive and Social Dentistry
유수민 ( Yoo Su-Min ) - Kyungdong University Department of Dental Hygiene
장종화 ( Jang Jong-Hwa ) - Hanseo University Department of Dental Hygiene
KMID : 1157520150110010027
Abstract
Objective: This study is aim to find optimum curing time and curing distance of composite resin to minimize the bisphenol A exposure by analyzing bisphenol A eluted in artificial saliva from resin specimens cured by different conditions.
Methods: Two types of composite resin (flowable type and hybrid type) were photopolymerized with different curing times (10, 15, 20, 40, and 60 seconds) and curing distances (0, 1, 3, 5, 10, 15 and 20 mm). After the polymerization, samples were extracted at different time points up to 24 hours. The released monomers were analyzed using high performance liquid chromatography-diode array detector system at ultraviolet 210 nm.
Results: The bisphenol A was eluted in the smallest quantities when cured at a 1 mm distance from both flowable and hybrid type resin specimens. The optimum curing time was 20 seconds in flowble type resin and was 10 seconds in hybrid type resin. Flowable type resin released more bisphenol A at long curing distance (＞5 mm) and short curing time (＜15 seconds).
Conclusion: The bisphenol A was minimally eluted when the composite resins are cured at 10 mm-distance for 10 to 15 seconds.
키워드
bisphenol A; composite resins; polymerization; curing lights
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