Swift E J, Perdigão J, Heymann H O
Department of Operative Dentistry, University of North Carolina at Chapel Hill, USA.
Pediatr Dent. 1998 Jul-Aug;20(4):259-62.
Several "one-bottle" dental adhesives recently have been introduced. These contain hydrophilic resin monomers that should readily wet tooth surfaces. Most also contain solvents that could increase enamel bond strengths by driving out residual moisture from enamel and increasing resin penetration. The purpose of this study was to evaluate bond strengths obtained by six one-bottle bonding agents and one conventional unfilled resin (control).
Seventy bovine teeth were randomly assigned to seven groups of 10. Enamel was etched for 15 s with 35% phosphoric acid. Following application of the adhesive, composite resin was bonded using a gelatin capsule technique. Shear bond strengths to enamel were determined.
Mean bond strengths ranged from 14.2 MPa for Syntac Single-Component to 27.8 MPa for Single Bond. The mean for Syntac Single-Component was significantly less than that of all other systems tested.
The results of this study indicate that one-bottle bonding agents, with the exception of the Syntac material, provide enamel bond strengths at least equal to that of a conventional unfilled resin.
最近推出了几种“单瓶”牙科粘合剂。这些粘合剂含有亲水性树脂单体，应能很容易地湿润牙齿表面。大多数还含有溶剂，这些溶剂可以通过驱走牙釉质中的残余水分并增加树脂渗透来提高牙釉质粘结强度。本研究的目的是评估六种单瓶粘结剂和一种传统未填充树脂（对照）获得的粘结强度。
70颗牛牙随机分为7组，每组10颗。用35%磷酸对牙釉质蚀刻15秒。涂抹粘合剂后，使用明胶胶囊技术粘结复合树脂。测定与牙釉质的剪切粘结强度。
平均粘结强度范围从Syntac单组分的14.2MPa到Single Bond的27.8MPa。Syntac单组分的平均值显著低于所有其他测试系统。
本研究结果表明，除Syntac材料外，单瓶粘结剂提供的牙釉质粘结强度至少与传统未填充树脂相当。
