Guba C J, Cochran M A, Swartz M L
Department of Preventive and Community Dentistry, Indiana University School of Dentistry, Indianapolis 46202, USA.
Oper Dent. 1994 Jul-Aug;19(4):146-53.
The effects of varied etching time and etching solution viscosity on bond strength were evaluated by measuring the tensile bond strength of a composite resin to bovine enamel. Also, six enamel surfaces were examined to evaluate the effect of acid treatment on the morphology of etched enamel using scanning electron microscopy. There was no significant difference in tensile bond strength between three etchants of differing viscosity or between etch times. Light microscopy revealed that most bond failures were cohesive in nature. When the three etchants of differing viscosity were compared under the scanning electron microscope, the liquid and the thin gel produced a more even etch pattern than the thick gel. In addition, the thin gel appeared to produce the most well-defined pattern of the three conditioners.
通过测量复合树脂与牛牙釉质的拉伸粘结强度，评估不同蚀刻时间和蚀刻溶液粘度对粘结强度的影响。此外，使用扫描电子显微镜检查六个牙釉质表面，以评估酸处理对蚀刻牙釉质形态的影响。不同粘度的三种蚀刻剂之间或蚀刻时间之间的拉伸粘结强度没有显著差异。光学显微镜显示，大多数粘结失败本质上是内聚性的。在扫描电子显微镜下比较三种不同粘度的蚀刻剂时，液体和稀凝胶产生的蚀刻图案比浓凝胶更均匀。此外，稀凝胶似乎在三种调节剂中产生了最清晰的图案。
