Improvement in wear resistance of composite veneering materials

Research Project

Project/Area Number	07672118
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	補綴理工系歯学
Research Institution	Nagasaki University
Principal Investigator	MATSUMURA Hideo Nagasaki University School of Dentistry, Department of Fixed Prosthodontics, Associate Professor, 歯学部, 助教授 (40199857)
Co-Investigator(Kenkyū-buntansha)	TANAKA Takuo Kagoshima University Dental School, Department of Fixed Prosthodontics, Professo, 歯学部, 教授 (40113584) ATSUTA Mitsuru Nagasaki University School of Dentistry, Department of Fixed Prosthodontics, Pro, 歯学部, 教授 (60002135)
Project Period (FY)	1995 – 1996
Project Status	Completed (Fiscal Year 1996)
Budget Amount *help	¥2,200,000 (Direct Cost: ¥2,200,000) Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000) Fiscal Year 1995: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywords	composite veneer / wear / 硬質レジン / コンポジットレジン
Research Abstract	Wear resistance of composite veneering materials was evaluated in vitro using a tooth brush wear testing device as well as a three-body wear testing machine. Composite resin veneered metal casting specimens were prepared using metal adhesive promoter. Wear resistance of the resin-metal interface was evaluated by means of the two wear testing devices. Wear resistance of the interface considerably improved through the use of a metal adhesive agent that contain thiol derivative monomer. Wear testing also revealed that both particle size distribution and sdhesive bonding between the filler particles and the matrix resin affected wear resistance of the materials. On the basis of these findings, it is concluded that wear resistance of composite resin veneered restorations can be improved with the use of appropriate adhesive promoter at the materials interface.