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Staining of hybrid composites with coffee, oolong tea, or red wine

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Title: Staining of hybrid composites with coffee, oolong tea, or red wine
Authors: Omata, Yo1 Browse this author
Uno, Shigeru Browse this author
Nakaoki, Yasuko Browse this author
Tanaka, Toru Browse this author
Sano, Hidehiko5 Browse this author →KAKEN DB
Yoshida, Shigemitsu Browse this author
Sidhu, Sharanbirk Browse this author
Authors(alt): 小俣, 葉1
佐野, 英彦5
Keywords: Light-cured resin composite
Issue Date: Mar-2006
Journal Title: Dental materials journal
Volume: 25
Issue: 1
Start Page: 125
End Page: 131
Abstract: This study examined the surface staining mechanism of a photopolymerized composite by coffee, oolong tea, and red wine. Dental composite was subjected to an experimental 24-hour staining cycle: 17-hour immersion in artificial saliva solution containing 0.3% mucin followed by 7-hour immersion in coffee, tea, or wine. After one, two, and four weeks, digital images of the composite surface were analyzed in grayscale mode with an imaging analyzer. Specimens polished but not immersed were used as a baseline measurement for color change. Additionally, the effects of mechanical brushing and chlorhexidine on drink-induced staining were examined. Wine caused the most severe staining, followed by tea and coffee. After four weeks of immersion, brushing reduced surface staining by wine. On the contrary, chlorhexidine increased the staining effect of tea and coffee (p<0.05) when compared to the control specimens. In conclusion, we showed that common drinks stained the dental composite, but each by a specific mechanism that depended on external conditions such as the presence of chlorhexidine.
Rights: Copyright(c)2006 The Japanese Society for Dental Materials and Devices
Type: article (author version)
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小俣 葉

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