为了解牙本质粘结剂与牙本质及牙骨质的粘结性能,选用三种牙本质粘结剂,配合复合树脂,对新鲜拔除之前牙和前磨牙进行充填粘结试验。通过染料溶液浸泡和扫描电镜观察,对材料的洞缘封闭和洞壁密合度作比较评价。结果是有釉质的洞缘封闭最好,牙本质洞缘封闭较差,牙骨质的洞缘封闭最差。比较几种牙本质粘结剂,洞缘封闭性能无显著差异。 To understand the bonding properties of dentin and dentin and cementum, three kinds of dentin adhesive were used in combination with the composite resin to perform the filling and adhesion test on the teeth and premolar freshly removed. By dye solution immersion and scanning electron microscopy, the material of the hole edge of the closure and the wall adhesion for evaluation. The result is the enamel closure of the best of the edge of the hole, the closure of the dentin cave edge is poor, the closure of cementum hole edge of the worst. Comparing several kinds of dentin adhesive, there is no significant difference in the sealing performance of the cave edge.