Scaminaci Russo Daniele, Iuliano Valentina, Franchi Lorenzo, Ferrari Marco, Giachetti Luca
Am J Dent. 2013 Dec;26(6):341-6.
To compare the bond strength to human primary dentin of a self-adhesive light-curing resin composite, a self-etch adhesive and a glass-ionomer cement by means of microshear bond strength (pSBS) test and scanning electron microscopic (SEM) observations.
75 human primary molars were sectioned to obtain a 2 mm-thick slab of mid-coronal dentin, randomly divided into three groups (n=25). Nine conical frustum-shaped buildups were constructed on the occlusal surface of each dentin slab using a self-adhesive light-curing resin composite (Vertise Flow; Group 1), bonding agent (Optibond All-in-One; Group 2) combined with resin composite (Premise Flow) and a glass-ionomer cement (Ketac-Fil; Group 3). After thermocycling, specimens were subjected to microSBS test. All debonded specimens were observed at SEM. Data were analyzed by a mixed model and chi-square test.
The bond strength measured in Group 1 (9.0 +/- 4.5 MPa) was significantly lower than that one recorded in Group 2 (20.2 +/-12.5 MPa) although it was significantly higher than the one recorded in Group 3 (4.8 +/- 2.3 MPa). Failures were mainly adhesive in all groups.
通过微剪切粘结强度（pSBS）测试和扫描电子显微镜（SEM）观察，比较一种自粘结光固化树脂复合材料、一种自酸蚀粘结剂和一种玻璃离子水门汀与人类乳牙牙本质的粘结强度。
将75颗人类乳牙制成厚度为2mm的中冠部牙本质片，随机分为三组（n = 25）。使用自粘结光固化树脂复合材料（Vertise Flow；第1组）、粘结剂（Optibond All-in-One；第2组）与树脂复合材料（Premise Flow）以及玻璃离子水门汀（Ketac-Fil；第3组）在每个牙本质片的咬合面上构建九个截头圆锥体状堆积物。热循环后，对标本进行微剪切粘结强度测试。所有脱粘的标本均在扫描电子显微镜下观察。数据采用混合模型和卡方检验进行分析。
第1组测得的粘结强度（9.0±4.5MPa）显著低于第2组（20.2±12.5MPa），尽管明显高于第3组（4.8±2.3MPa）。所有组的失败主要为粘结性失败。
