title: Effect of addition antimicrobial agents to denture reliners.
abstract: This study aimed at evaluating the incorporation of two antimicrobial drugs (nystatin and polynoxylin) as regards: the effect of the liner on the activity of the drug, determination of the least effective concentration of each drug and its duration of action, as well as assessment of the effect of the drug on the mechanical properties and the chemical composition of the liner. Results showed that nystatin added to denture liners in three different concentrations by weight (3%, 5%, 10%) acted effectively against Candida albicans, and that there was a direct relationship between concentration of Nystatin and its duration of action. The inhibitory effect of nystatin (10%) lasted for at least 32 weeks (end of study period). Furthermore, this concentration did not affect the strength properties of the liner. On the other hand, polynoxylin inhibited a number of strains of bacteria and Candida only in high concentrations (40-60%), and these concentrations adversely affected the strength properties of the liner.
authors.affiliation: Prosthodontics Dep., Faculty of Oral and Dental Medicine, Cairo University.
authors.forename: H
authors.initials: H
authors.lastname: el-Charkawi
authors.forename: E A
authors.initials: EA
authors.lastname: el-Said
authors.forename: H M
authors.initials: HM
authors.lastname: Safouh
authors.forename: N
authors.initials: N
authors.lastname: el-Raghi
mesh_terms: D000180:Acrylic Resins; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents / Q000494:pharmacology*; D000935:Antifungal Agents / Q000494:pharmacology*; D002176:Candida albicans / Q000187:drug effects; D003822:Denture Liners / Q000706:statistics & numerical data; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D019563:Mechanics; D008826:Microbial Sensitivity Tests / Q000379:methods; D009761:Nystatin / Q000494:pharmacology*; D011108:Polymers / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects; D013282:Stomatitis, Denture / Q000517:prevention & control; D013291:Streptococcus / Q000187:drug effects; D014508:Urea / Q000031:analogs & derivatives* / Q000494:pharmacology
chemical_list: D000180:Acrylic Resins; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D011108:Polymers; D009761:Nystatin; D014508:Urea; C003185:polynoxylin