这项研究分析了掺入了多功能多面体低聚倍半硅氧烷(MA-POSS-8)的蚀刻和冲洗(ER)或自蚀刻(SE)粘合剂的牙本质剪切粘合强度(SBS)。ER粘合剂(SolobondPlus,VOCOGmbH,Cuxhaven,德国)和应用于SE模式的通用粘合剂(ScotchbondUniversal,3M,圣保罗,MN,美国)用MA-POSS-8(混合塑料公司,哈蒂斯堡,MS,美国)在5重量。%或10重量%。%.纯粘合剂用作对照。在应用纳米混合复合材料(VenusDiamondA3,Kulzer,哈瑙,德国)。在水储存24小时后确定SBS和失效模式,6个月,12个月,或24个月(每个亚组n=20)。使用方差分析进行统计分析,威布尔统计,χ2检验(p<0.05)。24小时后,对照组的SBS对于ER粘合剂为17.4±4.9MPa,对于通用粘合剂为19.1±5.2MPa。24个月后,ER粘合剂的SBS对于5wt.%MA-POSS-8(17.9±5.1MPa)比对照组(14.6±3.6MPa)和10wt。%MA-POSS-8(12.8±4.1MPa),并观察到更多的内聚失败。通用胶粘剂的SBS在老化过程中增加,与MA-POSS-8浓度无关。5wt.%MA-POSS-8改善了ER粘合剂的SBS并且不损害SE粘合剂的SBS。
This study analyzed the dentin shear bond strength (SBS) of an etch-and-rinse (ER) or a self-etch (SE) adhesive incorporated with multifunctional polyhedral oligomeric silsesquioxanes (MA-POSS-8). An ER adhesive (Solobond Plus, VOCO GmbH, Cuxhaven, Germany) and a universal adhesive applied in SE mode (Scotchbond Universal, 3M, St. Paul, MN, USA) were infiltrated with MA-POSS-8 (Hybrid Plastics Inc., Hattiesburg, MS, USA) at 5 wt.% or 10 wt.%. Pure adhesives served as controls. Bovine dentin specimens were conditioned with one of the adhesives prior to the application of a nano-hybrid composite (Venus Diamond A3, Kulzer, Hanau, Germany). SBS and failure modes were determined after water storage for 24 h, 6 months, 12 months, or 24 months (each subgroup n = 20). Statistical analysis was performed using ANOVAs, Weibull statistics, and χ2 tests (p < 0.05). SBSs for the control groups after 24 h were 17.4 ± 4.9 MPa for the ER adhesive and 19.1 ± 5.2 MPa for the universal adhesive. After 24 months, the SBS of the ER adhesive was significantly higher for 5 wt.% MA-POSS-8 (17.9 ± 5.1 MPa) than for the control group (14.6 ± 3.6 MPa) and 10 wt.% MA-POSS-8 (12.8 ± 4.1 MPa), and more cohesive failures were observed. The SBS of the universal adhesive increased during aging, irrespective of the MA-POSS-8 concentration. 5 wt.% MA-POSS-8 improves the SBS of the ER adhesive and does not impair the SBS of the SE adhesive.