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作者旨在比较固位钉、粘接剂及两者联合使用时汞合金对牙本质的剪切粘接强度。 材料和方法 使用45颗离体牙(尺寸相似且完整的第三磨牙),磨去部分牙冠直至牙釉骨质界冠向 2 mm 处,于暴露的牙本质表面开窗5 mm~2,然后埋入丙烯酸树脂块中备用,随机分为 3组,每组15个样品。第1组为粘接剂组,首先在牙本质上涂布粘接剂引物,然后在暴露牙釉质表面使用Panavia-Ex粘接剂,最后充填汞合金;第2组为粘接剂加固位钉组,在牙本质中插入2根Pin-
The aim of the authors was to compare shear bond strength of amalgam to dentin with retention nails, adhesives, and both. MATERIALS AND METHODS Using 45 incisors (third molars of similar size and complete size), part of the toothbrush was ground until the coronal direction of the enamel and cementum was 2 mm and the window of exposed dentin was 5 mm ~ 2. Then embedded in acrylic block spare, were randomly divided into 3 groups of 15 samples. The first group was an adhesive group, which was first coated with adhesive primer on the dentin, then the Panavia-Ex adhesive was applied on the exposed enamel surface, and finally the amalgam was filled. The second group was an adhesive reinforcement pin Group, inserted in dentin 2 Pin-