Prati C, Ferrieri P, Galloni C, Mongiorgi R, Davidson C L
School of Dentistry, University of Bologna, Italy.
J Dent. 1995 Aug;23(4):217-26. doi: 10.1016/0300-5712(95)91186-q.
The relationship between dentine bonding and the condition of dentine for four dentine bonding systems (All Bond 2, Clearfil Liner Bond, Scotchbond MP and XR Bond) has been examined. Different dentine conditions were evaluated and correlated with adhesion values. Dentine permeability was calculated using a hydraulic pressure apparatus working under physiological pulpal pressure (6.9 kPa), while remaining dentine thickness (RDT) was measured using pincer calipers. Scanning electron microscopic (SEM) examinations were effected to analyse dentine morphology. These evaluations were considered as an index of the condition of dentine. Shear bond strength tests were used to evaluate adhesion. Dentine samples after the bonding systems application were stored for 24 h under pulpal pressure before bond strength was tested.
Scanning electron microscopy examinations indicated that the application of bonding system conditioners caused the removal of smear layer, the demineralization of dentine and the formation of a layer of collapsed collagen fibrils in the intertubular and peritubular dentine. Primers were able to infiltrate the collagen fibrils. A layer of resin infiltrated/reinforced dentine (the so-called 'hybrid layer') was observed for All Bond 2, Clearfil Linear Bond and Schotchbond MP.
Significant correlations were observed only for XR Bond, which proved very sensitive to RDT and dentine permeability despite the presence of smear layer. The other three materials did not show any correlation with dentine conditions. By contrast they showed the highest bond values.
研究了四种牙本质粘结系统（全粘结2型、Clearfil Liner Bond、Scotchbond MP和XR Bond）的牙本质粘结与牙本质状况之间的关系。评估了不同的牙本质状况，并将其与粘结力值相关联。使用在生理牙髓压力（6.9 kPa）下工作的液压装置计算牙本质通透性，同时使用钳式卡尺测量剩余牙本质厚度（RDT）。进行扫描电子显微镜（SEM）检查以分析牙本质形态。这些评估被视为牙本质状况的指标。使用剪切粘结强度测试来评估粘结力。在测试粘结强度之前，将应用粘结系统后的牙本质样本在牙髓压力下保存24小时。
扫描电子显微镜检查表明，粘结系统调节剂的应用导致玷污层去除、牙本质脱矿以及在管间和管周牙本质中形成一层塌陷的胶原纤维。底漆能够渗入胶原纤维。对于全粘结2型、Clearfil线性粘结和Scotchbond MP，观察到一层树脂渗入/增强的牙本质（所谓的“混合层”）。
仅在XR Bond中观察到显著相关性，尽管存在玷污层，但它对RDT和牙本质通透性非常敏感。其他三种材料与牙本质状况没有任何相关性。相比之下，它们显示出最高的粘结值。
