Yoshida K, Kamada K, Taira Y, Atsuta M
Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, Nagasaki, Japan.
J Oral Rehabil. 2001 Feb;28(2):168-73. doi: 10.1046/j.1365-2842.2001.00662.x.
The effect of commercial adhesive primers for noble metals on the bond strength of light-activated opaque resin has not been determined. This study evaluated the effect of three adhesive primers on the shear bond strengths of each of the four light-activated opaque resins to silver--palladium--copper--gold (Ag--Pd--Cu--Au) alloy. The adhesive primers Alloy Primer (AP), Metal Primer II (MPII) and Metaltite(MT) were used. Four commercial light-activated opaque resins (Axis (AX), Cesead II (CEII), Dentacolor(DE) and Solidex (SO) were used to bond a light-activated resin-veneered composite to Ag--Pd--Cu--Au alloy. The specimens were stored in water at 37 degrees C for 24 h and then immersed alternatively in water baths at 4 and 60 degrees C for 1 min each for up to 20,000 thermal cycles before shear mode testing at a cross-head speed of 0.5 mm min(-1). All the primers examined improved the shear bond strength between opaque resin and Ag--Pd--Cu--Au alloy compared with non-primed specimens prior to thermal cycling. After 20,000 thermal cycles, the bond strengths of combined use of AP and DE and that of MT and each of AX, CE or DE were significantly greater than any other groups. Significant difference was observed between the bond strengths at thermal cycles 0 and 20,000, with the combined use of MT and DE. With the combination of appropriate adhesive metal primers and light-activated opaque resins, complicated surface preparations of metal frameworks of resin-veneered prostheses that are composed of casting Ag-Pd-Cu-Au alloy may be negligible.
商用贵金属粘结剂底漆对光固化遮色树脂粘结强度的影响尚未确定。本研究评估了三种粘结剂底漆对四种光固化遮色树脂与银钯铜金（Ag-Pd-Cu-Au）合金之间剪切粘结强度的影响。使用了粘结剂底漆合金底漆（AP）、金属底漆II（MPII）和金属钛（MT）。使用四种商用光固化遮色树脂（Axis（AX）、Cesead II（CEII）、Dentacolor（DE）和Solidex（SO））将光固化树脂贴面复合材料粘结到Ag-Pd-Cu-Au合金上。将试样在37℃水中储存24小时，然后在4℃和60℃水浴中交替浸泡1分钟，进行多达20000次热循环，之后以0.5mm min⁻¹的十字头速度进行剪切模式测试。与未使用底漆的试样在热循环前相比，所有测试的底漆都提高了遮色树脂与Ag-Pd-Cu-Au合金之间的剪切粘结强度。在进行20000次热循环后，AP与DE组合以及MT与AX、CE或DE各自组合的粘结强度明显高于其他任何组。在热循环0次和20000次时，MT与DE组合的粘结强度之间观察到显著差异。通过适当的粘结剂金属底漆和光固化遮色树脂的组合，由铸造Ag-Pd-Cu-Au合金制成的树脂贴面假体金属框架复杂的表面处理可能可以忽略不计。
