2010 Fiscal Year Final Research Report

Improvement in wear resistance of indirect composites

Research Project

Project/Area Number	20592283
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Prosthetic dentistry
Research Institution	Nihon University
Principal Investigator	KOIZUMI Hiroyasu Nihon University, 歯学部, 講師 (20339229)
Co-Investigator(Kenkyū-buntansha)	MATSUMURA Hideo 日本大学, 歯学部, 教授 (40199857) YONEYAMA Takayuki 日本大学, 歯学部, 教授 (00220773)
Project Period (FY)	2008 – 2010
Keywords	歯学 / 複合材料・物性 / 表面・界面活性
Research Abstract	The purpose of the current study was to evaluate the influence of light sources on the mechanical properties and wear characteristics of indirect composite materials. The two composite materials used were Estenia C & B and Epricord. Three-body wear test was performed using indirect composite plate specimens, a gold alloy antagonist, and a polymer slurry. Wear depths of Estenia C&B polymerized with Hyper LII, α-Light II, and Labolight LV-II were 5.7, 18.5, and 64.2μm respectively, whereas those of Epricord were 12.9, 18.7, and 48.5μm respectively. Results showed that, after 100,000 cycles of localized loading, high-intensity light sources were effective in enhancing the wear resistance of both composite materials.

(4 results)