電解ピッティング処理を応用した硬質レジン前装冠の維持装置に関する研究 : 第1報 : 維持力と辺縁封鎖性に関する基礎的研究

概要

論文の詳細を見る
Pitting corrosion is an electro-chemical corrosion frequently observed in metal and alloy, and the pits produced by this corrosion have a fairly good undercut. B. Dunn and M.H. Reisbick applied this corrosion to enable the ceramic to attach to Vitallium. The purpose of this study was to determine the retentive force of the pits for retaining thermo-setting acrylic resin veneers. The metal casting casted by 92% Ni-6% Cr alloy was placed in a 4% Nail solution and biased positively with respect to a stainless steel electrode. A direct current was passed and by modifying the level and the treatment time, varying degree of pitting corrosion were achieved. After etching, current thermo-setting acrylic resin was veneered. Then all the specimens were subjected to thermal cycling at 4℃ and 60℃ for two hours. All the specimens were then measured the amount of force required to separate the facing resin from the metal casting. The strongest retention, 100kg/cm^2, were obtained at the following combination of the current density and the treatment time ; 625 m A-6 min, 500 m A-8 min, 375 m A-10 min, 250 m A-18 min. The pits appeared to be effective for retaining thermo-setting acrylic resin veneers.
日本補綴歯科学会の論文
1977-08-31