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学科主题: 口腔医学
题名:
Color difference threshold determination for acrylic denture base resins
作者: Ren, Jiabao1,2; Lin, Hong1,2; Huang, Qingmei3; Liang, Qifan4; Zheng, Gang1,2
关键词: Acrylic denture base resin ; perceptibility threshold ; acceptability threshold ; spectrophotometer ; CIEDE2000
刊名: BIO-MEDICAL MATERIALS AND ENGINEERING
发表日期: 2015
DOI: 10.3233/BME-151287
卷: suppl.1, 页:S35-S43
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Engineering, Biomedical ; Materials Science, Biomaterials
研究领域[WOS]: Engineering ; Materials Science
关键词[WOS]: ACCEPTABILITY THRESHOLDS ; PERCEPTIBILITY ; TEETH ; COMPOSITES
英文摘要:

This study aimed to set evaluation indicators, i.e., perceptibility and acceptability color difference thresholds, of color stability for acrylic denture base resins for a spectrophotometric assessing method, which offered an alternative to the visual method described in ISO 20795-1:2013. A total of 291 disk specimens 50 +/- 1 mm in diameter and 0.5 +/- 0.1 mm thick were prepared (ISO 20795-1:2013) and processed through radiation tests in an accelerated aging chamber (ISO 7491:2000) for increasing times of 0 to 42 hours. Color alterations were measured with a spectrophotometer and evaluated using the CIE L*a*b* colorimetric system. Color differences were calculated through the CIEDE2000 color difference formula. Thirty-two dental professionals without color vision deficiencies completed perceptibility and acceptability assessments under controlled conditions in vitro. An S-curve fitting procedure was used to analyze the 50:50% perceptibility and acceptability thresholds. Furthermore, perceptibility and acceptability against the differences of the three color attributes, lightness, chroma, and hue, were also investigated. According to the S-curve fitting procedure, the 50:50% perceptibility threshold was 1.71 Delta E-00 (r(2)=0.88) and the 50:50% acceptability threshold was 4.00 Delta E-00 (r(2)=0.89). Within the limitations of this study, 1.71/4.00 Delta E-00 could be used as perceptibility/acceptability thresholds for acrylic denture base resins.

语种: 英语
WOS记录号: WOS:000361671800005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/60836
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.Boston Univ, Dept Actuarial Sci, Boston, MA USA
2.Peking Univ, Sch Stomatol, Dept Dent Mat, Beijing 100081, Peoples R China
3.Peking Univ, Nat Engn Lab Digital & Mat Technol Stomatol, Beijing 100871, Peoples R China
4.Beijing Inst Technol, Sch Informat Sci & Technol, Nat Lab Color Sci & Engn, Beijing 100081, Peoples R China

Recommended Citation:
Ren, Jiabao,Lin, Hong,Huang, Qingmei,et al. Color difference threshold determination for acrylic denture base resins[J]. BIO-MEDICAL MATERIALS AND ENGINEERING,2015,suppl.1:S35-S43.
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