Effect of Photoaging on the Structure, Optical Properties and Roughness of One-Shade Composite Restoratives.

IF 5 3区 医学 Q1 ENGINEERING, BIOMEDICAL
Aikaterini Petropoulou, Maria Dimitriadi, Spiros Zinelis, Maria Antoniadou, George Eliades
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Abstract

The aim of the study was to evaluate changes in the degree of C=C conversion (DC%), chemical structure, optical properties and roughness of one-shade composites before/after photoaging. Τhe one-shade materials tested were Charisma Topaz One (CHT), Clearfil Majesty ES-2 Universal (MES), Essentia Universal (ESU) and Omnichroma (OMN), with G-aenial Anterior (CNA) serving as control. Specimens (2 mm thickness) were prepared and tested for DC% and chemical structure (ATR-FTIR spectroscopy), optical properties (L*a*b*-ΔΕ, translucency parameter-TP, opalescence parameter-OP, contrast ratio-CR and total transmittance-TT by UV-Vis spectroscopy) and roughness (Sa, Sz, Sdr, Sds and Sc by optical profilometry) before and after photoaging (Xe-arc weatherometer). Significant differences were found in DC% between top-bottom surfaces (ESU, OMN before; ESU, CNA after). Photoaging improved DC%, reduced ester peaks implying photodegradation, reduced L* (CHT, OMN, CNA), a* (CHT, CNA), b* (OMN, CNA), TP (all, except for MES), OP (only MES), CR (only MES, but an increase in CNA) and TT (CHT, OMN). OMN, CNA and MES demonstrated ΔΕ > 3.3. Photoaging significantly increased all roughness parameters in all materials, except for MES (Sz, Sdr, Sc) and OMN (Sdr). Although listed in the same group, significant differences were found in one-shade composites before and after photoaging. Several products were strongly affected by photoaging, demonstrating evidence of photodegradation, an increased roughness and color changes exceeding the clinically acceptable levels.

光老化对单色复合树脂修复体的结构、光学特性和粗糙度的影响
这项研究的目的是评估光老化前后一色复合材料的 C=C 转换程度(DC%)、化学结构、光学特性和粗糙度的变化。测试的单色材料包括 Charisma Topaz One (CHT)、Clearfil Majesty ES-2 Universal (MES)、Essentia Universal (ESU) 和 Omnichroma (OMN),对照组为 G-aenial Anterior (CNA)。制备了试样(2 毫米厚),并在光老化之前和之后(Xe-电弧风化仪)对其 DC%、化学结构(ATR-傅立叶变换红外光谱)、光学特性(L*a*b*-ΔΕ、透光参数-TP、乳白参数-OP、对比度-CR 和总透射率-TT,紫外-可见光谱)和粗糙度(Sa、Sz、Sdr、Sds 和 Sc,光学轮廓仪)进行了测试。发现上下表面之间的直流电率存在显著差异(之前为 ESU、OMN;之后为 ESU、CNA)。光照老化提高了 DC%,减少了酯峰,这意味着光降解,降低了 L*(CHT、OMN、CNA)、a*(CHT、CNA)、b*(OMN、CNA)、TP(所有,除 MES)、OP(仅 MES)、CR(仅 MES,但 CNA 增加)和 TT(CHT、OMN)。OMN、CNA 和 MES 的 ΔΕ > 3.3。除 MES(Sz、Sdr、Sc)和 OMN(Sdr)外,光照老化明显增加了所有材料的粗糙度参数。虽然被列为同一组,但单色复合材料在光老化前后存在明显差异。一些产品受到光老化的严重影响,显示出光降解、粗糙度增加和颜色变化超过临床可接受的水平。
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来源期刊
Journal of Functional Biomaterials
Journal of Functional Biomaterials Engineering-Biomedical Engineering
CiteScore
4.60
自引率
4.20%
发文量
226
审稿时长
11 weeks
期刊介绍: Journal of Functional Biomaterials (JFB, ISSN 2079-4983) is an international and interdisciplinary scientific journal that publishes regular research papers (articles), reviews and short communications about applications of materials for biomedical use. JFB covers subjects from chemistry, pharmacy, biology, physics over to engineering. The journal focuses on the preparation, performance and use of functional biomaterials in biomedical devices and their behaviour in physiological environments. Our aim is to encourage scientists to publish their results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Several topical special issues will be published. Scope: adhesion, adsorption, biocompatibility, biohybrid materials, bio-inert materials, biomaterials, biomedical devices, biomimetic materials, bone repair, cardiovascular devices, ceramics, composite materials, dental implants, dental materials, drug delivery systems, functional biopolymers, glasses, hyper branched polymers, molecularly imprinted polymers (MIPs), nanomedicine, nanoparticles, nanotechnology, natural materials, self-assembly smart materials, stimuli responsive materials, surface modification, tissue devices, tissue engineering, tissue-derived materials, urological devices.
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