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学科主题口腔医学
Determining color difference thresholds in denture base acrylic resin
Ren, Jiabao1; Lin, Hong1; Huang, Qingmei2; Zheng, Gang1
刊名JOURNAL OF PROSTHETIC DENTISTRY
2015-11-01
114期:5页:702-708
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]ACCEPTABILITY THRESHOLDS ; PERCEPTIBILITY ; FORMULA ; COMPOSITES
英文摘要

Statement of problem. In restorative prostheses, color is important, but the choice of color difference formula used to quantify color change in acrylic resins is not straightforward.

Purpose. The purpose of this in vitro study was to choose a color difference formula that best represented differences between the calculated color and the observed imperceptible to unacceptable color and to determine the corresponding perceptibility and acceptability threshold of color stability for denture base acrylic resins.

Material and methods. A total of 291 acrylic resin denture base plates were fabricated and subjected to radiation tests from zero to 42 hours in accordance with ISO 7491:2000. Color was measured with a portable spectrophotometer, and color differences were calculated with 3 International Commission on Illumination (CIE) formulas: CIELab, CMC(1:1), and CIEDE2000. Thirty-four observers with no deficiencies in color perception participated in psychophysical perceptibility and acceptability assessments under controlled conditions in vitro. These 2 types of assessments were regressed to each observer by each formula to generate receiver operator characteristic (ROC) curves. Areas under the curves (AUCs) were then calculated and analyzed to exclude observers with poor color discrimination. AUCs were subjected to 1-way ANOVA (alpha=.05) to deter the statistical significance of discriminability among the 3 formulas in terms of perceptibility and acceptability judgments. Student-Newman-Keuls tests (alpha=.05) were used for post hoc comparison.

Results. CMC(1:1) and CIEDE2000 formulas performed better for imperceptible to unacceptable color differences, with corresponding CMC(1:1) and CIEDE2000 values for perceptibility of 2.52 and 1.72, respectively, and acceptability thresholds of 6.21 and 4.08, respectively.

Conclusions. Formulas CMC(1:1) and CIEDE2000 possess higher discriminability than that of CIELab in the assessment of perceptible color difference threshold of denture base acrylic resin. A statistically significant difference exists between perceptibility and acceptability thresholds for denture base acrylic resin.

语种英语
WOS记录号WOS:000364269100015
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/65980
专题北京大学口腔医学院
作者单位1.Peking Univ, Sch & Hosp Stomatol, Dept Dent Mat, Beijing 100081, Peoples R China
2.Beijing Inst Technol, Natl Lab Color Sci & Engn, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714
Ren, Jiabao,Lin, Hong,Huang, Qingmei,et al. Determining color difference thresholds in denture base acrylic resin[J]. JOURNAL OF PROSTHETIC DENTISTRY,2015,114(5):702-708.
APA Ren, Jiabao,Lin, Hong,Huang, Qingmei,&Zheng, Gang.(2015).Determining color difference thresholds in denture base acrylic resin.JOURNAL OF PROSTHETIC DENTISTRY,114(5),702-708.
MLA Ren, Jiabao,et al."Determining color difference thresholds in denture base acrylic resin".JOURNAL OF PROSTHETIC DENTISTRY 114.5(2015):702-708.
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