Gordan V V, Vargas M A, Denehy G E
Department of Operative Dentistry, College of Dentistry, University of Florida Health Science Center, Gainesville 32610-0415, USA.
Am J Dent. 1998 Feb;11(1):13-6.
To observe the resin/enamel interface produced by different adhesive systems.
A conventional three-step smear layer removing adhesive system (Scotchbond Multi-Purpose), a two-step smear layer removing adhesive system (Prime & Bond), and a two-step smear layer dissolving adhesive system containing a self-etching primer (Panavia 21) were evaluated. Flat enamel surfaces were obtained from approximal surfaces of 18 extracted human molars. A total of 36 surfaces were collected and divided into three groups of 12 samples. One-half of each specimen in each group was etched with 35% phosphoric acid prior to the application of each adhesive system, with the second half being kept unetched. Subsequently, resin composite was placed and polymerized for 40 seconds. The samples were fractured and immersed into HCl and NaOCl solutions, followed by critical point drying and sputter coating for examination with a field emission scanning electron microscope.
In the etched samples, Panavia 21 and Scotchbond Multi-Purpose showed more consistent resin tag penetration than did Prime & Bond. Unetched Prime & Bond and Scotchbond Multi-Purpose samples showed minimal or no adhesive penetration in enamel surfaces.
观察不同粘结系统产生的树脂/牙釉质界面。
评估了一种传统的三步去除玷污层粘结系统（Scotchbond多功能粘结剂）、一种两步去除玷污层粘结系统（Prime & Bond）以及一种含自酸蚀底漆的两步溶解玷污层粘结系统（Panavia 21）。从18颗拔除的人类磨牙的邻面获取平坦的牙釉质表面。共收集36个表面并分为三组，每组12个样本。每组中每个样本的一半在应用每种粘结系统之前用35%磷酸酸蚀，另一半不进行酸蚀。随后，放置树脂复合材料并聚合40秒。将样本折断并浸入盐酸和次氯酸钠溶液中，然后进行临界点干燥和溅射镀膜，以便用场发射扫描电子显微镜检查。
在酸蚀样本中，Panavia 21和Scotchbond多功能粘结剂比Prime & Bond表现出更一致的树脂突渗透。未酸蚀的Prime & Bond和Scotchbond多功能粘结剂样本在牙釉质表面显示出最小的或没有粘结剂渗透。
