Tsujimoto Akimasa, Barkmeier Wayne W, Takamizawa Toshiki, Latta Mark A, Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Visiting Research Scholar, Department of General Dentistry, Creighton University School of Dentistry, Omaha, Nebraska, USA.
Am J Dent. 2017 Apr;30(2):71-76.
To evaluate the effects of oxygen inhibition of universal adhesive on dentin bond durability and interfacial characteristics.
The three universal adhesives used were Scotchbond Universal Adhesive, Prime & Bond Elect, and G-Premio Bond. Shear bond strength (SBS) and shear fatigue strength (SFS) of resin composite bonded to adhesive with and without an oxygen inhibited layer (OIL) on dentin using total-etch and self-etch modes were determined. Surface free energy (SFE) and SFE parameters of cured adhesive with and without an OIL on dentin using total-etch and self-etch modes were also measured by the sessile drop method.
The presence of an OIL in universal adhesives promoted higher SBS and SFS regardless of etching mode. In addition, regardless of adhesive type and etching modes, the specimens with an OIL showed a higher ratio of SFS/SBS than those without an OIL. Further, the SFEs, especially total SFE, polarity force and hydrogen bonding force, of cured adhesives with an OIL were significantly higher than those without an OIL.
The present findings indicated that the oxygen inhibition of universal adhesive did not impair the dentin bond durability and interfacial characteristics of the adhesive.
评估通用型粘结剂的氧抑制对牙本质粘结耐久性和界面特性的影响。
使用的三种通用型粘结剂分别是Scotchbond通用粘结剂、Prime & Bond Elect和G-Premio Bond。采用全酸蚀和自酸蚀模式,测定树脂复合材料与牙本质上有无氧抑制层(OIL)的粘结剂粘结时的剪切粘结强度(SBS)和剪切疲劳强度(SFS)。还采用座滴法测量了全酸蚀和自酸蚀模式下牙本质上有无OIL的固化粘结剂的表面自由能(SFE)和SFE参数。
无论蚀刻模式如何,通用型粘结剂中存在OIL均能提高SBS和SFS。此外,无论粘结剂类型和蚀刻模式如何,有OIL的试样的SFS/SBS比值均高于无OIL的试样。此外,有OIL的固化粘结剂的SFE,尤其是总SFE、极性力和氢键力,显著高于无OIL的固化粘结剂。
本研究结果表明,通用型粘结剂的氧抑制不会损害粘结剂的牙本质粘结耐久性和界面特性。