Abstract Objectives To investigate the effect of methacrylate polyhedral oligomeric silsesquioxane (POSS-8) particles on the polymerization process, dentin bond strength, and mineral precipitation of universal dental adhesives. Methods Five universal adhesives (Adhese Universal, CLEARFIL Universal Bond, Futurabond U, iBOND Universal, Scotchbond Universal) were filled with POSS-8 particles (10 wt%, additionally 2 wt% and 5 wt% in Scotchbond Universal). The particle size and dispersion in ethanol and acetone were examined by dynamic light scattering. Degree of conversion, linear shrinkage, and shear bond strength to dentin treated with the filled and pure adhesives (controls) were measured. Growth of calcium phosphate (Ca/P) precipitates on the adhesive specimens immersed in artificial saliva for up to 28 days was analyzed by energy-dispersive X-ray spectroscopy and scanning electron microscopy. Statistical analyses were performed using ANOVA and Tukey's post-hoc tests (p Results The hydrodynamic radius of the particles in acetone (1.4 ± 0.4 nm) and ethanol (1.1 ± 0.4 nm) revealed their good dispersion. POSS-8 did not change the degree of conversion and dentin bond strength of any adhesive. Ca/P precipitates formed on iBOND Universal specimens doped with POSS-8 after 4 weeks of immersion, but were not detected on the unfilled adhesive. The mineral precipitation of all other adhesives was not improved by POSS-8. Significance POSS-8 particles did not compromise polymerization and bonding of universal adhesives. Ca/P precipitation was stimulated by POSS-8 only in iBOND Universal.

中文翻译：

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掺杂多面体低聚倍半硅氧烷的通用牙科粘合剂的矿物沉淀、聚合性能和粘接性能

摘要 目的研究甲基丙烯酸酯多面体低聚倍半硅氧烷（POSS-8）颗粒对通用牙科粘合剂聚合过程、牙本质结合强度和矿物沉淀的影响。方法 在五种通用粘合剂（Adhese Universal、CLEARFIL Universal Bond、Futurabond U、iBOND Universal、Scotchbond Universal）中填充 POSS-8 颗粒（10 wt%，另外在 Scotchbond Universal 中添加 2 wt% 和 5 wt%）。通过动态光散射检查粒度和在乙醇和丙酮中的分散。测量转化率、线性收缩率和对用填充的和纯的粘合剂（对照）处理过的牙本质的剪切粘合强度。通过能量色散 X 射线光谱和扫描电子显微镜分析了磷酸钙 (Ca/P) 沉淀物在浸入人工唾液中长达 28 天的粘合剂样品上的生长情况。使用方差分析和 Tukey 事后检验进行统计分析（p 结果 丙酮 (1.4 ± 0.4 nm) 和乙醇 (1.1 ± 0.4 nm) 中粒子的流体动力学半径表明它们具有良好的分散性。POSS-8 没有改变程度任何粘合剂的转化率和牙本质粘合强度的变化。浸泡 4 周后，在掺杂 POSS-8 的 iBOND Universal 样品上形成 Ca/P 沉淀，但未在未填充的粘合剂上检测到。所有其他粘合剂的矿物沉淀未通过POSS-8. 意义 POSS-8 颗粒不会影响通用粘合剂的聚合和粘合。