2013 Fiscal Year Final Research Report

Adhesive bonding between resin composites and laser-sinterd or machine-milled metal frameworks

Research Project

Project/Area Number	23592859
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Prosthetic dentistry
Research Institution	Nagasaki University
Principal Investigator	KAMADA KOHJI 長崎大学, 医歯(薬)学総合研究科, 助教 (60264256)
Co-Investigator(Kenkyū-buntansha)	TAIRA Yohsuke 長崎大学, 大学院医歯薬学総合研究科, 准教授 (40226725)
Project Period (FY)	2011 – 2013
Keywords	CAD/CAM / レーザー焼結法 / ミリング法 / コンポジットレジン / 接着
Research Abstract	The purpose of this study was to achieve strong and durable bonding between resin composites and titanium or cobalt-chromium alloy CAD/CAM frameworks in order veneered prostheses to withstand the severe environment in the oral cavity. Priming with 10-methacryloxydecyl dihydrogen phosphate (MDP) improved the bonding durability between veneering resin composite and a laser-sintered Co-Cr alloy the same as a cast Co-Cr alloy. Compared to cast Co-Cr alloy, laser-sintered Co-Cr alloy with retention devices provided better retention for resin composite-veneered prostheses. On the other hand titanium, the shear bond strengths were improved by additional etching with 45% H2SO4 and 15% HCl. These methods would be useful for reducing clinical complications, such as fracture or debonding of veneered resin composite from metal frameworks.

(3 results)