2011 Fiscal Year Final Research Report

Establishment of new dental materials disinfection methods which applied to excited-oxygen

Research Project

Project/Area Number	22791909
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Prosthetic dentistry
Research Institution	Kanagawa Dental College
Principal Investigator	ODAGIRI Ken 神奈川歯科大学, 歯学部, 助教 (60350534)
Project Period (FY)	2010 – 2011
Keywords	消毒 / 活性酸素 / 床用レジン / 表面荒さ / 機械的強度
Research Abstract	The effects of certain disinfectants on the stability of a polymethyl methacrylate denture base resin were investigated, including those of a novel disinfection method using excited-oxygen. The following disinfectants were tested : 5% sodium hypochlorite, 70% alcohol, and excited-oxygen. Furthermore, the attachment of Candida albicans to the resin surface was investigated. The surface roughness and flexural strength of the excited-oxygen treated specimens did not significantly differ from those of the control specimens, and the excited-oxygen treated specimens exhibited diminished Candida attachment. These results demonstrate that the excited-oxygen disinfection method preserves acceptable material stability levels in polymethyl methacrylate resins.