Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.
J Prosthodont. 2019 Mar;28(3):321-326. doi: 10.1111/jopr.13020. Epub 2019 Feb 4.
To evaluate the effect of the application sequence of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) paste (MI paste) on shear bond strength (SBS) of 2 etch-and-rinse resin cements to dentin.
Sixty extracted human maxillary premolars were cut to expose the mid-coronal dentin surfaces. The teeth were randomly divided into 6 groups (n = 10), based on the resin cement used and CPP-ACP application. In groups 1-3, Excite DSC/Variolink II and in groups 2-4, One-Step Plus/Duolink was bonded to dentin. There were 3 groups for each cement as follows: with no treatment as a control; 3-minute application of CPP-ACP before acid etching (CPP-ACP/Etching); 3-minute application of CPP-ACP after acid etching (Etching/CPP-ACP). After storage in distilled water at 37°C for 24 hours, SBS test was performed. Data were analyzed with 2-way ANOVA and post-hoc Tukey test (α = 0.05).
CPP-ACP application on the dentin before and after acid etching significantly decreased the SBS of OS/Duolink (13.60 and 14.71 MPa, respectively vs. control; 21.21 MPa, p < 0.001); however, it did not influence the SBS of Excite DSC/Variolink II (25.14 MPa) before acid etching (27.37 MPa) or after acid etching (26.41 MPa, p > 0.388). The application sequence of CPP-ACP did not influence the SBS of etch-and-rinse resin cements evaluated.
CPP-ACP applications may lower the SBS in some etch-and-rinse resin cements, and timing of applications makes no difference.
评价酪蛋白磷酸肽-无定形磷酸钙（CPP-ACP）糊剂（MI 糊剂）应用顺序对 2 种酸蚀-冲洗型树脂水门汀与牙本质间剪切粘结强度（SBS）的影响。
60 颗上颌前磨牙被切割以暴露近中牙冠表面。这些牙齿随机分为 6 组（n = 10），根据所使用的树脂水门汀和 CPP-ACP 的应用情况进行分组。在第 1-3 组中，使用 Excite DSC/Variolink II，在第 2-4 组中，使用 One-Step Plus/Duolink 粘结到牙本质上。每种水门汀都有 3 组，具体如下：无处理作为对照组；酸蚀前 3 分钟应用 CPP-ACP（CPP-ACP/Etching）；酸蚀后 3 分钟应用 CPP-ACP（Etching/CPP-ACP）。在 37°C 的蒸馏水中储存 24 小时后，进行 SBS 测试。采用双因素方差分析和事后 Tukey 检验（α = 0.05）对数据进行分析。
酸蚀前后在牙本质上应用 CPP-ACP 显著降低了 OS/Duolink 的 SBS（分别为 13.60 和 14.71 MPa，与对照组相比；21.21 MPa，p < 0.001）；然而，它并没有影响酸蚀前 Excite DSC/Variolink II 的 SBS（25.14 MPa）或酸蚀后的 SBS（26.41 MPa，p > 0.388）。CPP-ACP 的应用顺序并不影响评价的酸蚀-冲洗型树脂水门汀的 SBS。
CPP-ACP 的应用可能会降低某些酸蚀-冲洗型树脂水门汀的 SBS，应用时机并无差异。
