Burrow M F, Sano H, Nakajima M, Harada N, Tagami J
School of Dental Science, University of Melbourne, Victoria, Australia.
Am J Dent. 1996 Oct;9(5):223-9.
To investigate (1) the tensile bond strengths of four commercial dentin bonding systems to bovine crown and root dentin and (2) the structure of the hybrid layers for each system bonded to the two dentin substrates.
Superficial surfaces were exposed in bovine crown and root dentin. The teeth were embedded in plaster and a 3 mm diameter bonding area was demarcated. The four bonding systems used were All-Bond 2, Super-Bond D-Liner Plus, Clearfil Liner Bond II, and ProBond. Bonding procedures followed the manufacturers' instructions with the exception of Super-Bond D-Liner Plus where the primer was left in situ for 60 seconds. Tensile bond strengths were tested after 24-hour storage in 37 degrees C deionized water. Specimens were also prepared for SEM observation of the hybrid layer, after treatment with 10% phosphoric acid, and 10% phosphoric acid and 5% sodium hypochlorite.
Statistically lower bond strengths to crown dentin when compared with root dentin were observed for All-Bond 2, whereas Liner Bond II showed the opposite (P < 0.01). Both ProBond and Super-Bond D-Liner Plus showed no statistical differences between crown and root dentin (P > 0.05). Hybrid layers could be observed for All-Bond 2, Liner Bond II and Super-Bond D-Liner Plus, with no apparent differences between the hybrid layers of crown and root dentin. In the case of ProBond, where the smear layer was not removed during the priming stage, it appeared that the primer had infiltrated and caused hybridization of the smear layer. The differences in bond strength were thought to be related to the different bonding mechanisms of each material, as well as possible variations in the crown and root dentin substrates.
研究（1）四种市售牙本质粘结系统与牛牙冠和牙根牙本质的拉伸粘结强度，以及（2）每种系统粘结到两种牙本质基质上的混合层结构。
在牛牙冠和牙根牙本质上暴露表面。将牙齿嵌入石膏中，划定直径为3mm的粘结区域。使用的四种粘结系统分别是全粘结2（All-Bond 2）、超强粘结D-衬层加强型（Super-Bond D-Liner Plus）、Clearfil衬层粘结II（Clearfil Liner Bond II）和ProBond。粘结程序遵循制造商的说明，但超强粘结D-衬层加强型除外，其底漆在原位保留60秒。在37℃去离子水中储存24小时后测试拉伸粘结强度。在用10%磷酸、10%磷酸和5%次氯酸钠处理后，还制备了用于扫描电子显微镜观察混合层的标本。
全粘结2与牙根牙本质相比，与牙冠牙本质的粘结强度在统计学上较低，而衬层粘结II则相反（P<0.01）。ProBond和超强粘结D-衬层加强型在牙冠和牙根牙本质之间均无统计学差异（P>0.05）。全粘结2、衬层粘结II和超强粘结D-衬层加强型均可观察到混合层，牙冠和牙根牙本质的混合层之间无明显差异。在ProBond的情况下，在涂底漆阶段未去除玷污层，似乎底漆已渗透并导致玷污层发生杂交。粘结强度的差异被认为与每种材料的不同粘结机制以及牙冠和牙根牙本质基质可能的差异有关。
