Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Samsun, Turkey.
Gerodontology. 2012 Jun;29(2):e357-62. doi: 10.1111/j.1741-2358.2011.00480.x. Epub 2011 May 12.
This study evaluated the effects of various pre-processing methods on the bond strength between resin and denture teeth.
Debonding of acrylic resin teeth from denture base material is a problem for patients wearing complete dentures.
Four experimental groups (n = 30) were investigated by subjecting tooth-resin bonding to tensile loading. Specimens were prepared and tested according to the methods of the International Standards Organization (ISO 22112:2005) using a special assembly. Four pre-processing surface treatments of teeth were applied: (i) ST(1), no treatment applied (control); (ii) ST(2) , wax solvent (Dewaks, Faber Kimya & Ilaç, Turkey); (iii) ST(3), boiling water followed by conditioning with methyl methacrylate (MMA) monomer (Meliodent, Bayer Dental, Germany); (iv) ST(4), boiling water followed by wax solvent agent and finally MMA monomer application. Bond strength test was performed using a universal testing machine.
All the strength values of the test groups were within clinically acceptable limits. The lowest values were from the ST(1) group and the highest values were in the ST(4) group.
Wax elimination methods affected bonding strength. Application of wax solvent and MMA monomer to the ridge lap surfaces of the teeth gave the best results. In clinical practice, this application procedure may decrease the bonding failure of denture teeth.
本研究评估了各种预处理方法对树脂和义齿牙之间粘结强度的影响。
义齿基托材料上的丙烯酸树脂牙脱粘是全口义齿佩戴患者的一个问题。
通过对牙-树脂粘结进行拉伸加载，对四个实验组（n=30）进行了研究。根据国际标准化组织（ISO 22112：2005）的方法，使用特殊组件制备和测试标本。对牙齿进行了四种预处理表面处理：（i）ST（1），不进行处理（对照）；（ii）ST（2），蜡溶剂（Dewaks，Faber Kimya 和 Ilaç，土耳其）；（iii）ST（3），沸水后用甲基丙烯酸甲酯（MMA）单体处理（Meliodent，Bayer Dental，德国）；（iv）ST（4），沸水后先用蜡溶剂处理，然后再用 MMA 单体处理。使用万能试验机进行粘结强度测试。
所有实验组的强度值均在临床可接受范围内。最低值来自 ST（1）组，最高值来自 ST（4）组。
蜡去除方法影响粘结强度。将蜡溶剂和 MMA 单体应用于牙齿的脊搭接表面可获得最佳效果。在临床实践中，这种应用程序可能会减少义齿牙的粘结失效。
