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纳米复合树脂不同牙本质和釉质层厚度对二硅酸锂牙科陶瓷与复合树脂颜色匹配的影响。

Influence of Varying Dentin and Enamel Layer Thicknesses of Nano-Composite Resins on Color Match between Lithium Disilicate Dental Ceramic and Composite Resins.

作者信息

Saati Khosroshahi Elmira, Jafari Navimipour Elmira, Pournaghi Azar Fatemeh, Abed-Kahnamoui Mehdi, Bahari Mahmoud

机构信息

Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.

出版信息

Front Dent. 2021 Apr 12;18:12. doi: 10.18502/fid.v18i12.6137. eCollection 2021.

DOI:10.18502/fid.v18i12.6137
PMID:35965712
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9355847/
Abstract

The aim of this study was to evaluate the influence of varying dentin and enamel layer thicknesses of two nano-composite resins on color match of composite resins and lithium disilicate dental ceramic. Twenty-six specimens of two types of nano-composite resins, Opallis and Vittra, were fabricated using the two-layered technique with different thickness ratios of enamel and dentin composites (A2 shade) with a total thickness of 1.2mm. Thirteen discs of the same shade and thickness of IPS e.max Press LT (low translucency) lithium disilicate dental ceramic were also fabricated. Specimen color was measured with a spectrophotometer. The difference in color (ΔE) of composite and ceramic specimens, and the translucency parameter (TP) of all specimens were calculated. Data were analyzed using multi-factor ANOVA (P<0.05). The color difference (ΔE) values of composites and ceramic were not clinically acceptable in any areas of either of the two composites (ΔE>2.25). But ΔE between the two composite resins was in the clinically acceptable range (ΔE<2.25). The mean TP value of IPS e.max Press was greater than that of Vittra and lower than that of Opallis. In similar thicknesses, composite resins with any enamel/dentin thickness ratio could not successfully simulate the color and translucency of IPS e.max Press LT ceramic.

摘要

本研究的目的是评估两种纳米复合树脂不同的牙本质和釉质层厚度对复合树脂与二硅酸锂牙科陶瓷颜色匹配的影响。使用两层技术，以不同的釉质和牙本质复合材料（A2色）厚度比制作了26个两种类型的纳米复合树脂标本，即Opallis和Vittra，总厚度为1.2毫米。还制作了13个相同颜色和厚度的IPS e.max Press LT（低透明度）二硅酸锂牙科陶瓷圆盘。用分光光度计测量标本颜色。计算复合树脂和陶瓷标本的颜色差异（ΔE）以及所有标本的透明度参数（TP）。使用多因素方差分析对数据进行分析（P<0.05）。两种复合树脂在任何区域的复合树脂与陶瓷的颜色差异（ΔE）值在临床上均不可接受（ΔE>2.25）。但两种复合树脂之间的ΔE在临床可接受范围内（ΔE<2.25）。IPS e.max Press的平均TP值大于Vittra且低于Opallis。在相似厚度下，任何釉质/牙本质厚度比的复合树脂都无法成功模拟IPS e.max Press LT陶瓷的颜色和透明度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/d21f51be9719/FID-18-12-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/98cfb8691ff0/FID-18-12-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/92fc4430ecc2/FID-18-12-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/d21f51be9719/FID-18-12-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/98cfb8691ff0/FID-18-12-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/92fc4430ecc2/FID-18-12-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/df75/9355847/d21f51be9719/FID-18-12-g003.jpg

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