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学科主题: 口腔医学
题名:
Effects of common beverage colorants on color stability of dental composite resins: The utility of a thermocycling stain challenge model in vitro
作者: Ren, Yan-Fang1; Feng, Lin1,2; Serban, Diana1; Malmstrom, Hans S.1
关键词: Composite resin ; Color stability ; Color assessment ; Tooth discoloration ; Aesthetic dentistry
刊名: JOURNAL OF DENTISTRY
发表日期: 2012-07-01
DOI: 10.1016/j.jdent.2012.04.017
卷: suppl.1, 页:E48-E56
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine
研究领域[WOS]: Dentistry, Oral Surgery & Medicine
关键词[WOS]: FOOD-SIMULATING SOLUTIONS ; RESTORATIVE MATERIALS ; CLINICAL-EVALUATION ; WATER SORPTION ; NANOFILL COMPOSITE ; IMMERSION MEDIA ; SUSCEPTIBILITY ; NANOCOMPOSITES ; SOLUBILITY ; SYSTEMS
英文摘要:

Objectives: To study the color stability of dental composite resins using a thermocycling stain challenge model accounting for the complex effects of oral environment and tooth brushing.

Methods: Composite resin discs were made from Filtek Supreme Ultra (FiltekSU), TPH3 and Renamel, and subjected to thermocycling challenges in warm coffee (55 degrees C/pH 5.2) and a cold tea and fruit juice mixtures (5 degrees C/pH 3.6) for a total of 1000 cycles with 30 seconds dwell time in each solution per cycle. Color was assessed in the CIELAB color space using a Crystaleye dental spectrophotometer before and after thermocycling, and after brushing vigorously for 3 min. The thermocycling stain challenge was repeated for a second 1000 cycles and the discs were brushed again. Color changes were compared among the 3 groups using Kruskal-Wallis test.

Results: All 3 groups showed statistically significant color changes after stain challenge, with Delta E* as 5.74 for FiltekSU, 3.21 for TPH3 and 2.52 for Renamel. Color change was more significant in FiltekSU than in TPH3 and Renamel (p < 0.05). After brushing, color recovered mostly to its original CIELAB values in TPH3 and Renamel but less so in FiltekSU. The second round of thermocycling stain challenge resulted in color changes in FiltekSU that largely could not be removed by vigorous brushing.

Conclusions: Color stability of FiltekSU is inferior to that of TPH3 and Renamel. The thermocycling stain challenge model can potentially differentiate surface staining that can be removed by brushing from true discoloration of the material that is refractory to oral hygiene procedures. (C) 2012 Elsevier Ltd. All rights reserved.

语种: 英语
所属项目编号: 7113176
项目资助者: Devision of General Dentistry, University of Rochester Eastman Institute for Oral Health ; University of Rochester Eastman Institute for Oral Health ; University of Rochester Eastman Institute for Oral Health under Collaborative Initiative in Clinical and Translational Dental Research ; University of Rochester Eastman Institute for Oral Health under Peking University School of Stomatology ; Beijing Natural Science Foundation
WOS记录号: WOS:000305338800008
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/55531
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Univ Rochester, Div Gen Dent, Eastman Inst Oral Hlth, Rochester, NY 14620 USA
2.Peking Univ, Sch Stomatol, Dept Endodont & Operat Dent, Beijing 100871, Peoples R China

Recommended Citation:
Ren, Yan-Fang,Feng, Lin,Serban, Diana,et al. Effects of common beverage colorants on color stability of dental composite resins: The utility of a thermocycling stain challenge model in vitro[J]. JOURNAL OF DENTISTRY,2012,suppl.1:E48-E56.
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