自固化块状填充复合材料的修复粘结强度：基材成分、表面处理和修复材料类型的影响

摘要(中文译文)

本体外研究旨在评估基底材料组成、表面处理方案及修复材料类型对老化自固化大块填充树脂复合材料修复剪切粘接强度（SBS）的影响。共使用两种基底组成的自固化大块填充复合材料（Stela；Automix和Capsule）制备80个试件。经热循环初步老化后，按照2×2×2析因设计对试件进行修复，设计因素包括表面处理（机械粗化联合或不联合37%磷酸酸蚀）和修复材料类型（配合专用底涂剂的自固化复合材料或配合通用粘接剂的光固化纳米混合复合材料）。使用万能试验机测量SBS。使用体视显微镜分析失败模式。数据采用三因素方差分析、Tukey's HSD检验和Fisher精确检验进行分析（p<0.05）。基底材料组成、表面处理方案和修复材料类型均显著影响修复粘接强度（p<0.001）。Capsule基底的SBS值高于Automix基底。与单独机械粗化相比，磷酸酸蚀显著提高了SBS。使用相同自固化复合材料进行修复的SBS显著高于使用光固化复合材料修复者。基底组成×修复材料类型（p<0.001）及表面处理×修复材料类型（p=0.015）之间存在显著的二元交互作用。最高SBS见于Capsule+酸蚀+自固化修复组。失败模式分析显示，自固化修复组以 cohesive 或混合失败为主，而光固化修复组粘接失败频率更高。自固化大块填充复合材料的修复粘接强度高度依赖于材料和方案。采用化学相容的自固化材料系统联合辅助磷酸酸蚀可显著优化修复耐久性，尤其适用于机械研磨的胶囊型基底。修复材料和表面处理方案的选择显著影响老化自固化大块填充复合材料的修复粘接强度。当已知原始修复材料时，经磷酸处理后使用相同复合材料系统进行修复可能提供更持久的粘接。

Abstract

This in vitro study aimed to evaluate the effects of substrate composition, surface conditioning protocol, and repair material type on the repair shear bond strength (SBS) of an aged self-cure bulk-fill resin composite. A total of 80 specimens were fabricated using two substrate compositions of a self-cure bulk-fill composite (Stela; Automix and Capsule). After initial aging by thermocycling, specimens were repaired according to a 2 × 2 × 2 factorial design based on surface conditioning (mechanical roughening with or without 37% phosphoric acid etching) and repair material type (self-cure composite with proprietary primer or light-cure nanohybrid composite with a universal adhesive). SBS was measured using a universal testing machine. Failure modes were analyzed using a stereomicroscope. Data were analyzed using three-way ANOVA, Tukey's HSD, and Fisher's exact tests (p < 0.05). Substrate composition, surface conditioning protocol, and repair material type each significantly affected repair bond strength (p < 0.001). Capsule-based substrates showed higher SBS values than Automix substrates. Phosphoric acid etching significantly increased SBS compared with mechanical roughening alone. Repairs performed with the same self-cure composite exhibited significantly higher SBS than those repaired with a light-cure composite. Significant two-way interactions were observed between substrate composition × repair material type (p < 0.001) and surface conditioning × repair material type (p = 0.015). The highest SBS was observed in the Capsule + acid etching + self-cure repair group. Failure mode analysis revealed predominantly cohesive or mixed failures in self-cure repair groups, whereas light-cure repair groups showed a higher frequency of adhesive failures. Repair bond strength of a self-cure bulk-fill composite is highly material- and protocol-dependent. Utilizing a chemically compatible self-cure material system combined with adjunctive phosphoric acid etching significantly optimizes repair longevity, especially when applied to mechanically triturated capsule-based substrates. The selection of repair material and surface conditioning protocol significantly influences the repair bond strength of aged self-cure bulk-fill composites. When the original restorative material is known, repair with the same composite system following phosphoric acid conditioning may provide more durable bonding.

如何引用

Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] 的其他文献

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