NaBadalung D P, Powers J M, Connelly M E
University of Washington, School of Dentistry, Seattle, USA.
J Prosthet Dent. 1998 Sep;80(3):354-61. doi: 10.1016/s0022-3913(98)70137-4.
In-vitro bond strengths of 3 denture base resins (Trutone, Lucitone 199, and Triad) to a nickel-chromium-beryllium removable partial denture alloy (Ticonium) were tested with 3 surface pretreatments: sandblast, acid etch, and Rocatec (silica blasting), with or without primers (Dentsply, CR inlay cement, and Super Bond).
Lucitone 199 denture base resin bonded to the nonprimed sandblasted alloy specimen served as the control group. Alloy specimens were prepared, surface treated, and primed or not primed with primer. The treated specimens were then packed and processed with the denture base resin. Bonded specimens were stored in the distilled water at 37 degrees C for 24 hours, and then debonded in tension. The force at which the bond failed was noted, and bond strength was calculated in megapascals (MPa). Five replications for each condition (180 specimens total) were tested.
Significant differences in bond strength were observed with primer, the most important factor, followed by pretreatment and denture base resin. Without primer for all 3 denture base resins, the Met-Etch and Rocatec treated group showed significantly higher bond strengths than the sandblasted groups. For Trutone denture base resin, nonprimed treated groups produced significantly higher bond strength than those for the other 2 denture base resin, nonprimed treated groups produced significantly higher bond strength than those for the other 2 denture base resins. The control group had zero bond strength. For Dentsply primer, the Rocatec treated group bonded to Lucitone 199 resin produced the highest bond strength value (14.8 +/- 1.8 MPa). For CR inlay cement, the Met-Etch and Rocatec treated groups for Lucitone denture base resin demonstrated the highest bond strength (19.3 +/- 4.8 MPa, and 19.3 +/- 1.8 MPa, respectively). For super Bond primer, the Met-Etch treated group for Trutone resin demonstrated the highest bond strength (19.8 +/- 6.2 MPa).
Without primer, the control had the lowest bond strength (0 MPa), and the Trutone groups showed the highest bond strength (11.7 +/- 4.1 MPa). Met-Etch and Rocatec treated groups produced higher bond strengths than the sandblasted groups. The primed specimens demonstrated significantly higher bond strengths than nonprimed specimens, except for Trutone resin, for which primed specimens produced lower bond strengths than the nonprimed specimens.
测试3种义齿基托树脂（Trutone、Lucitone 199和Triad）与一种镍铬铍可摘局部义齿合金（Ticonium）之间的体外粘结强度，采用3种表面预处理方法：喷砂、酸蚀和Rocatec（硅烷化喷砂），并使用或不使用底漆（登士柏、CR嵌体粘结剂和超强粘结剂）。
将Lucitone 199义齿基托树脂粘结到未涂底漆的喷砂合金试件上作为对照组。制备合金试件，进行表面处理，涂底漆或不涂底漆。然后将处理后的试件用义齿基托树脂包埋并加工。将粘结后的试件在37℃蒸馏水中储存24小时，然后进行拉伸脱粘。记录粘结破坏时的力，并以兆帕（MPa）为单位计算粘结强度。对每种情况进行5次重复试验（共180个试件）。
观察到粘结强度存在显著差异，其中底漆是最重要的因素，其次是预处理方法和义齿基托树脂。对于所有3种义齿基托树脂，不使用底漆时，酸蚀和Rocatec处理组的粘结强度显著高于喷砂组。对于Trutone义齿基托树脂，未涂底漆处理组的粘结强度显著高于其他2种义齿基托树脂的未涂底漆处理组。对照组的粘结强度为零。对于登士柏底漆，Rocatec处理组与Lucitone 199树脂粘结产生的粘结强度值最高（14.8±1.8 MPa）。对于CR嵌体粘结剂，Lucitone义齿基托树脂的酸蚀和Rocatec处理组表现出最高的粘结强度（分别为19.3±4.8 MPa和19.3±1.8 MPa）。对于超强粘结剂底漆，Trutone树脂的酸蚀处理组表现出最高的粘结强度（19.8±6.2 MPa）。
不使用底漆时，对照组的粘结强度最低（0 MPa），Trutone组的粘结强度最高（11.7±4.1 MPa）。酸蚀和Rocatec处理组的粘结强度高于喷砂组。涂底漆的试件粘结强度显著高于未涂底漆的试件，但Trutone树脂除外，涂底漆的试件粘结强度低于未涂底漆的试件。
