Impact of plasma treatment of PMMA-based CAD/CAM blanks on surface properties as well as on adhesion to self-adhesive resin composite cements
Impact of plasma treatment of PMMA-based CAD/CAM blanks on surface properties as well as on adhesion to self-adhesive resin composite cements
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DOI：
10.1016/j.dental.2013.06.004
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发表时间：
2013-09-01
期刊：
影响因子：
5
通讯作者：
Stawarczyk, Bogna
中科院分区：
文献类型：
--
作者：
Liebermann, Anja;Keul, Christine;Stawarczyk, Bogna
目标。结合基于 PMMA 的 CAD/CAM 块的不同调节方法，测试未经/经过等离子处理的自粘树脂复合水泥的表面能、粗糙度和拉伸粘合强度 (TBS)。方法。 PMMA 样品（10 mm x 10 mm x 2 mm）经过制造（N = 260）、抛光和空气研磨（50 μm Al2O3，5s，0.05 MPa）。选择 20 个样本进行表面能和粗糙度测量（无/有等离子体，每组 n = 10）。其余样本 (n = 240) 用于无/有等离子体处理和以下调节方法的 TBS 测试（每个测试组 n = 20）：(i) 无调节，(ii) Visio。链接，(iii) VP 连接并与 Clearfil SA Cement 和 RelyX Unicem Automix 混合。对样品进行老化（24 小时 37 摄氏度水 + 5000 次热循环，5 摄氏度/55 摄氏度），测量 TBS 并评估失效类型。使用描述性统计、Mann-Whitney-U 和 Kruskal-Wallis-H 检验、未配对 t 检验、Chi(2) 和 Spearman 相关性检验对数据进行分析。结果。 PMMA 的等离子处理显着增加了表面能 (p < 0.001)，但对表面粗糙度没有影响 (p = 0.718)。未经等离子体处理的组显示出比等离子体处理组更高的 TBS（p < 0.001 至 p = 0.011），但使用 VP connect 调节并使用 RelyX Unicem Automix 进行染色的 PMMA 除外（p = 0.03）。与 RelyX Unicem Automix 相比，Clearfil SA Cement 显示出更高的 TBS（使用 Visio 调节的组除外）。关联。对于使用 Visio 调节的组，两种树脂复合水泥均显示出最高的 TBS。关联。此外，在 Clearfil SA Cement 中，使用 VP connect 进行的调节显示出与 Visio 相当的 TBS。链接.意义. PMMA 的等离子处理并没有增加自粘树脂复合水泥的粘合力。 (C) 2013 年牙科材料学会。由爱思唯尔有限公司出版。保留所有权利。
Objectives. To test surface energy, roughness and tensile bond strength (TBS) to self-adhesive resin composite cements without/with plasma treatment combined with different conditioning methods of PMMA-based CAD/CAM blocks.Methods. PMMA specimens (10 mm x 10 mm x 2 mm) were fabricated (N = 260), polished and air-abraded (50 mu m Al2O3, 5s, 0.05 MPa). Twenty specimens were selected for surface energy and roughness measurements (without/with plasma n = 10 per group). The remaining specimens (n = 240) were used for TBS testing without/with plasma treatment and following conditioning methods (n = 20 per test group): (i) without conditioning, (ii) Visio. link, (iii) VP connect and luted with Clearfil SA Cement and RelyX Unicem Automix. Specimens were aged (24 h 37 degrees C water + 5000 thermal cycles, 5 degrees C/55 degrees C), TBS was measured and failure types were assessed. Data were analyzed using descriptive statistics, Mann-Whitney-U and Kruskal-Wallis-H tests, unpaired t-test, Chi(2) and the Spearman correlation test.Results. Plasma treatment of PMMA increased the surface energy significantly (p < 0.001) but had no impact on the surface roughness (p = 0.718). Groups without plasma treatment showed higher TBS than plasma treated groups (p < 0.001 to p = 0.011), except PMMA conditioned with VP connect and luted using RelyX Unicem Automix (p = 0.03). Clearfil SA Cement showed higher TBS compared to RelyX Unicem Automix, except for groups conditioned with Visio. link. Both resin composite cements showed the highest TBS for groups conditioned with Visio. link. Also, among Clearfil SA Cement, conditioning with VP connect showed comparable TBS to Visio. link.Significance. Plasma treatment of PMMA did not increase the adhesion to self-adhesive resin composite cements. (C) 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.