دانلود رایگان مقاله انگلیسی آستانه مات برای مواد دندانی - الزویر 2018

عنوان فارسی
آستانه مات برای مواد دندانی
عنوان انگلیسی
Translucency thresholds for dental materials
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
7
سال انتشار
2018
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
مقالات پژوهشی (تحقیقاتی)
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E9517
رشته های مرتبط با این مقاله
دندانپزشکی
گرایش های مرتبط با این مقاله
آسیب شناسی دهان
مجله
مواد دندانی - dental materials
دانشگاه
Department of Stomatology - Faculty of Dentistry - Campus de Cartuja s/n E-18071 - University of Granada - Spain
کلمات کلیدی
CIEDE2000 ،CIELAB رزین کامپوزیت، مواد دندانی، پارامتر فراتابی، آستانه فراتابی
doi یا شناسه دیجیتال
https://doi.org/10.1016/j.dental.2018.05.001
چکیده

abstract


Objective. To determine the translucency acceptability and perceptibility thresholds for dental resin composites using CIEDE2000 and CIELAB color difference formulas. Methods. A 30-observer panel performed perceptibility and acceptability judgments on 50 pairs of resin composites discs (diameter: 10mm; thickness: 1mm). Disc pair differences for the Translucency Parameter (TP) were calculated using both color difference formulas (TP00 ranged from 0.11 to 7.98, and TPab ranged from 0.01 to 12.79). A Takagi–Sugeno–Kang (TSK) Fuzzy Approximation was used as fitting procedure. From the resultant fitting curves, the 95% confidence intervals were estimated and the 50:50% translucency perceptibility and acceptability thresholds (TPT and TAT) were calculated. Differences between thresholds were statistically analyzed using Student t tests (˛ = 0.05). Results. CIEDE2000 50:50% TPT was 0.62 and TAT was 2.62. Corresponding CIELAB values were 1.33 and 4.43, respectively. Translucency perceptibility and acceptability thresholds were significantly different using both color difference formulas (p = 0.01 for TPT and p = 0.005 for TAT). CIEDE2000 color difference formula provided a better data fit than CIELAB formula. Significance. The visual translucency difference thresholds determined with CIEDE2000 color difference formula can serve as reference values in the selection of resin composites and evaluation of its clinical performance.

نتیجه گیری

Conclusions


Reliable translucency thresholds have been determined. The CIEDE2000 50:50% is TPT00 = 0.62 units whereas the 50:50% is TAT00 = 2.62 units corresponding CIELAB values are 1.33 and 4.43 units, respectively. The CIEDE2000 color difference formula provided a better fit of the data than the CIELAB formula to evaluate translucency difference thresholds of resin composites, which recommends its use for the translucency analysis in dentistry.


بدون دیدگاه