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首页> 外文期刊>Photodiagnosis and Photodynamic Therapy >Surface treatment of RMGIC to composite resin using different photosensitizers and lasers: A bond assessment of closed Sandwich restoration
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Surface treatment of RMGIC to composite resin using different photosensitizers and lasers: A bond assessment of closed Sandwich restoration

机译：使用不同光敏剂和激光器的Rmgic对复合树脂的表面处理：封闭式三明治恢复的键评估

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Aim: The aim of present study was to assess and compare different conditioning methods (laser, PDT and conventional) on shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC) bonded to composite (sandwich technique).Material and methods: Fifty specimens were prepared from RMGIC and were packed in a teflon mould placed on glass slab. Through each of the glass slab the cement was light cured for 20 s. Now samples were randomly allocated into five groups (n = 10) according to pre-treatment protocols. In group 1 RMGIC were conditioned with MBP using PDT, Samples in group 2 treated with Er,Cr:YSGG (ECYL), group 3 pre-treated with Nd:YAG laser (NYL), samples in group 4 surface conditioned with air abrasion (AA) and group 5 conditioned with 37 % phosphoric acid (PA). Specimens after conditioning were rinsed with distilled water. Adhesive Adper Single Bond 2 was applied on treated surface of RMGIC and cured. Teflon mold was utilized to hold the composite Filtek Z250 in an incremental technique. For SBS testing all specimens were placed under shear knife edge at 1 K N at a speed of 0.5mm(2) until bond failure. Optical microscope was used to evaluate failure pattern at 10x magnification. The data of SBS in Megapascal were subjected to statistical test. Analysis of variance was followed by Post hoc test with level of significance at 5 %.Result: The maximum SBS was found in group 5 RMGIC conditioned with 37 % PA (16.45 +/- 0.32 MPa). Whereas, group 1 (MBP, PDT) demonstrated significantly lower bond integrity (9.82 +/- 1.08 MPa) compared to all experimental groups. Bond integrity of RMGIC surface treated with MBP, PDT (9.82 +/- 1.08 MPa), group 3 lased with NYL (11.47 +/- 0.53 MPa) and samples in group 4 conditioned with AA (11.23 +/- 0.47 MPa) were comparable (p 0.05).Conclusion: ECYL has a potential to be used for conditioning of RMGIC prior to composite restoration (sandwich technique). MBP at 100 mg/L deteriorates SBS of composite to RMGIC.
机译：目的：目前研究的目的是评估和比较与复合材料（夹层技术）的树脂改性玻璃离聚物水泥（RMGIC）的剪切粘合强度（SBS）上的不同调节方法（激光，PDT和常规）。材料和方法：从RMGIC制备五十种样本，并填充在放置在玻璃板上的Te​​flon模具中。通过每个玻璃板，水泥的光被固化为20 s。现在，根据预处理方案，将样品随机分配成五组（n = 10）。在第1组中，使用PDT调节MBP，用ER处理的第2组中的样品，Cr：YSGG（eCyl），第3组预处理：YAG激光（邻尼基），在4组表面调节空气磨蚀（ AA）和第5组用37％的磷酸（PA）。用蒸馏水冲洗调理后的样品。将粘合剂粘合剂单键2涂覆在Rmgic的处理表面上并固化。利用铁氟龙模具以增量技术保持复合FILTEK Z250。对于SBS测试，将所有样本以0.5mm（2）的速度以1kn为1kn置于剪切刀边缘，直至粘合衰竭。光学显微镜用于评估10倍放大率的故障模式。对Megapascal的SBS数据进行统计测试。差异分析后，后性能检测随着5％的5％的显着性。结果：在第5组中发现最大SBS，37％PA（16.45 +/- 0.32 MPa）。然而，与所有实验组相比，第1组（MBP，PDT）的债券完整性（9.82 +/- 1.08MPa）显着下降。用MBP，PDT（9.82 +/- 1.08MPa）处理的RMGIC表面的粘合完整性，用邻尼基（11.47 +/- 0.53MPa）和含有AA的第4组中的样品（11.23 +/- 0.47MPa）进行比较（p> 0.05）。结论：eCyl具有用于在复合修复之前用于调节RMGIC（夹心技术）的电势。 MBP为100 mg / L劣化复合材料的SBS至RMGIC。

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