Nagura Yuko, Tsujimoto Akimasa, Barkmeier Wayne W, Watanabe Hidehiko, Johnson William W, Takamizawa Toshiki, Latta Mark A, Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
Eur J Oral Sci. 2018 Apr;126(2):135-145. doi: 10.1111/eos.12398. Epub 2018 Jan 18.
The relationship between enamel bond fatigue durability and surface free-energy characteristics with universal adhesives was investigated. The initial shear bond strengths and shear fatigue strengths of five universal adhesives to enamel were determined with and without phosphoric acid pre-etching. The surface free-energy characteristics of adhesive-treated enamel with and without pre-etching were also determined. The initial shear bond strength and shear fatigue strength of universal adhesive to pre-etched enamel were higher than those to ground enamel. The initial shear bond strength and shear fatigue strength of universal adhesive to pre-etched enamel were material dependent, unlike those to ground enamel. The surface free-energy of the solid (γ ) and the hydrogen-bonding force (γSh) of universal adhesive-treated enamel were different depending on the adhesive, regardless of the presence or absence of pre-etching. The bond fatigue durability of universal adhesives was higher to pre-etched enamel than to ground enamel. In addition, the bond fatigue durability to pre-etched enamel was material dependent, unlike that to ground enamel. The surface free-energy characteristics of universal adhesive-treated enamel were influenced by the adhesive type, regardless of the presence or absence of pre-etching. The surface free-energy characteristics of universal adhesive-treated enamel were related to the results of the bond fatigue durability.
研究了通用型粘结剂的牙釉质粘结疲劳耐久性与表面自由能特性之间的关系。测定了五种通用型粘结剂在有无磷酸预酸蚀情况下对牙釉质的初始剪切粘结强度和剪切疲劳强度。还测定了有无预酸蚀情况下经粘结剂处理的牙釉质的表面自由能特性。通用型粘结剂对预酸蚀牙釉质的初始剪切粘结强度和剪切疲劳强度高于对磨除牙釉质的强度。与对磨除牙釉质的情况不同，通用型粘结剂对预酸蚀牙釉质的初始剪切粘结强度和剪切疲劳强度取决于材料。无论有无预酸蚀，通用型粘结剂处理的牙釉质的固体表面自由能（γ）和氢键力（γSh）因粘结剂而异。通用型粘结剂对预酸蚀牙釉质的粘结疲劳耐久性高于对磨除牙釉质的情况。此外，与对磨除牙釉质的情况不同，对预酸蚀牙釉质的粘结疲劳耐久性取决于材料。无论有无预酸蚀，通用型粘结剂处理的牙釉质的表面自由能特性受粘结剂类型的影响。通用型粘结剂处理的牙釉质的表面自由能特性与粘结疲劳耐久性结果相关。
