Nikaido T, Kataumi M, Burrow M F, Inokoshi S, Yamada T, Takatsu T
Tokyo Medical and Dental University, Faculty of Dentistry, Department of Operative Dentistry, Japan.
Oper Dent. 1996 Sep-Oct;21(5):218-24.
The effect of low-pressure (41.8 psi) air abrasion with alumina and glass beads on bonding to tooth substrates was evaluated. Tensile bond strengths of a bonding resin to air-abraded bovine enamel and dentin were measured. Scanning electron microscopy was used to observe (1) air-abraded surfaces, (2) fractured surfaces after the tensile bond test, and (3) interfaces of bonded specimens. Air abrasion with glass beads significantly decreased the bond strengths to enamel and dentin, whereas air abrasion with alumina decreased adhesion to enamel but not to dentin. The air-abraded enamel and dentin surfaces were irregularly roughened, and smear layers were created by air abrasion. Hybrid layers were observed at the interface between the bonding resin and the air-abraded dentin. The SEM photographs suggested that air abrasion may weaken the tooth surfaces, which could account for the decrease of the bond strengths.
评估了使用氧化铝和玻璃珠进行低压（41.8磅力/平方英寸）气磨对与牙齿基质粘结的影响。测量了粘结树脂与气磨后的牛牙釉质和牙本质的拉伸粘结强度。使用扫描电子显微镜观察（1）气磨表面，（2）拉伸粘结试验后的断裂表面，以及（3）粘结标本的界面。用玻璃珠进行气磨显著降低了与牙釉质和牙本质的粘结强度，而用氧化铝进行气磨降低了与牙釉质的粘结力，但对牙本质没有影响。气磨后的牙釉质和牙本质表面不规则地粗糙化，并且气磨产生了玷污层。在粘结树脂和气磨后的牙本质之间的界面处观察到混合层。扫描电子显微镜照片表明，气磨可能会削弱牙齿表面，这可以解释粘结强度的降低。
