Evaluation of denture base resin after disinfection method using reactive oxygen species (ROS).
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 reactive oxygen species (ROS). The surface roughness and flexural strength were analyzed to assess the effects of the disinfectants on material properties. The following disinfectants were tested: 5% sodium hypochlorite, 70% alcohol, and ROS. Furthermore, the attachment of Candida albicans to the resin surface was investigated. The disinfection method using sodium hypochlorite significantly increased the surface roughness and decreased flexural strength. The surface roughness and flexural strength of the ROS-treated specimens did not significantly differ from those of the control specimens, and the ROS-treated specimens exhibited diminished Candida attachment. These results demonstrate that the ROS disinfection method preserves acceptable material stability levels in polymethyl methacrylate resins.
Division of Fixed Prosthodontics, Department of Oral and Maxillofacial Rehabilitation, Kanagawa Dental College, Yokosuka, Kanagawa, Japan.
Ken
K
Odagiri
Tomofumi
T
Sawada
Norio
N
Hori
Kazuhide
K
Seimiya
Takeshi
T
Otsuji
Nobushiro
N
Hamada
Katsuhiko
K
Kimoto
D001422:Bacterial Adhesion / Q000187:drug effects; D002176:Candida albicans / Q000187:drug effects; D019551:Dental Disinfectants / Q000494:pharmacology; D003799:Dental Stress Analysis; D003819:Denture Bases; D004203:Disinfection / Q000379:methods*; D000431:Ethanol / Q000494:pharmacology; D008422:Materials Testing; D018583:Pliability; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D017382:Reactive Oxygen Species / Q000494:pharmacology; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013499:Surface Properties
D019551:Dental Disinfectants; D017382:Reactive Oxygen Species; D000431:Ethanol; D019904:Polymethyl Methacrylate; D012973:Sodium Hypochlorite