Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/31066
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    標題: Evaluating a Cobalt-Tetraphenylporphyrin Complex, Functionalized with a Reduced Graphene Oxide Nanocomposite, for Improved Tooth Whitening
    作者: Su, I-Hsuan
    Lee, Chen-Fu
    Su, Yu-Pin
    Wang, Lai-Hao
    貢獻者: Natl Taiwan Univ Hosp, Dept Orthodont
    Yang An Dent Clin
    Chia Nan Univ Pharm & Sci, Dept Med Chem
    關鍵字: hydrogen-peroxide penetration
    in-vitro
    green synthesis
    nanoparticles
    h2o2
    enamel
    light
    hydroxyapatite
    activation
    composite
    日期: 2016-09
    上傳時間: 2018-01-18 11:40:58 (UTC+8)
    出版者: Wiley-Blackwell
    摘要: ObjectivesTo study using cobalt-tetraphenylporphyrin/reduced graphene oxide (CoTPP/RGO), a nanocomposite highly catalytic both for oxidizing and for reducing hydrogen peroxide (H2O2), to whiten teeth. MethodsDyes (D&C Red 34, Orange No. 4), tea, and betel nuts (Areca catechu) were used to stain the tooth specimens for three days and subsequently bleached using H2O2 alone, H2O2 plus CoTPP, or H2O2 plus CoTPP/RGO for 0.5-70 hours. The process was photographed using an electronic chromometer and a camera. Color change was assessed after each session. The results of bleaching teeth with and without photoirradiation were compared. ResultsCoTPP/RGO increased the tooth-whitening efficacy of H2O2 for specimens stained with dyes, tea, and betel nuts. Using lamps (photoactivation) (wavelengths: 254 nm and 310 nm) to catalyze the H2O2 bleaching agent reduced the bleaching treatment time. CLINICAL SIGNIFICANCEFirst, the Co/TPP/RGO complex allows improved tooth bleaching and shorter treatment times. Second, because the Co/TPP/RGO complex bleached D&C Red 34 at a similar rate and to a similar degree as tea and other natural agents stain teeth, it is a convenient staining agent for studying many vital aspects of tooth bleaching. (J Esthet Restor Dent 28:321-329, 2016)
    關聯: Journal of Esthetic and Restorative Dentistry, v.28 n.5, pp.321-329
    显示于类别:[食藥產業暨檢測科技系(含五專)] 期刊論文

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