Abstract The aim of this study was to evaluate the morphological surface and the microtensile bond strength (μTBS) of the immediate dentin sealing (IDS) submitted to four different methods for removing temporary cement. Molar teeth received IDS with adhesive system (Adper Scotchbond Multipurpose, 3M ESPE). Temporary restorations were made with eugenol-free temporary cement (RelyX Temp NE, 3M ESPE). After the storage (7 days; 37oC), the samples were submitted to four methods for removing temporary cement: periodontal curette (PC); sodium bicarbonate sandblasting (SB); aluminum oxide sandblasting (AO); and abrasion with diamond bur (DB). The control group (C) received no treatment. The morphological surface analysis (n=2) and IDS thickness (n=3) were analyzed using scanning electron microscopy (SEM). Resin composite blocks (Filtek Z250, 3M ESPE) were produced and cut into sticks (∼1 mm2) for μTBS (n=9). Fracture patterns were analyzed on stereomicroscope and classified as adhesive, mixed, cohesive-dentin or cohesive-resin. Data were submitted to Shapiro-Wilk test and one-way ANOVA followed by Tukey’s post hoc test (α=0.05). PC and SB groups showed the lowest and the highest μTBS values, respectively (ρ

中文翻译：

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不同方法去除临时水泥后即刻牙本质封闭的形态表面和微拉伸粘结强度

摘要 本研究的目的是评估采用四种不同去除临时水泥方法的即刻牙本质封闭 (IDS) 的形态表面和微拉伸粘合强度 (μTBS)。磨牙接受带有粘合剂系统的 IDS（Adper Scotchbond Multipurpose，3M ESPE）。临时修复体使用不含丁香酚的临时水泥（RelyX Temp NE，3M ESPE）制作。储存后（7 天；37oC），样品接受四种去除临时粘固剂的方法：牙周刮匙（PC）；碳酸氢钠喷砂（SB）；氧化铝喷砂（AO）；和金刚石车针 (DB) 的磨损。对照组（C）不接受任何治疗。使用扫描电子显微镜 (SEM) 分析形态表面分析 (n=2) 和 IDS 厚度 (n=3)。树脂复合块（Filtek Z250，3M ESPE) 并切成棒状 (~1 mm2) 用于 μTBS (n=9)。在体视显微镜下分析骨折模式，并将其分类为粘合性、混合性、粘性牙本质或粘性树脂。将数据提交给 Shapiro-Wilk 检验和单向方差分析，然后进行 Tukey 事后检验 (α=0.05)。PC 和 SB 组分别显示最低和最高 μTBS 值（ρ