title: Comparative effects of denture cleansers on physical properties of polyamide and polymethyl methacrylate base polymers.
abstract: The purpose of this study was to evaluate the effect of denture cleansers on the surface roughness, hardness and color stability of two polyamides (Valpast, Deflex), a butadiene styrene copolymer PMMA (Rodex), and PMMA polymer as a control group (Paladent). Each material was divided into 5 sub-groups (n=7) as two control and three test groups. Three test groups were immersed for 20 days in commercially available three denture cleansers (CO-Corega, PR-Protefix, VA-Valclean). Two-way analysis of variance and Tukey's post hoc HSD test were used to evaluate surface roughness and hardness data (α=0.05). ΔE, ΔL*, Δa*and Δb* mean values were used for ANOVA, Tamhane test was used as post hoc. Polyamides showed low hardness and high roughness before and after immersion. A significant decrease in hardness was observed for all resins except Rodex after immersion (p<0.05). The denture cleansers changed the roughness, hardness and color of some resins.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Afyon Kocatepe University, Afyon, Turkey.
authors.forename: Rukiye
authors.initials: R
authors.lastname: Durkan
authors.forename: Elif Aydoğan
authors.initials: EA
authors.lastname: Ayaz
authors.forename: Bora
authors.initials: B
authors.lastname: Bagis
authors.forename: Ayhan
authors.initials: A
authors.lastname: Gurbuz
authors.forename: Nilgun
authors.initials: N
authors.lastname: Ozturk
authors.forename: Fatih Mehmet
authors.initials: FM
authors.lastname: Korkmaz
mesh_terms: D003116:Color; D003819:Denture Bases; D003820:Denture Cleansers; D006244:Hardness; D008422:Materials Testing; D009757:Nylons; D019904:Polymethyl Methacrylate; D012117:Resins, Synthetic; D013499:Surface Properties
chemical_list: D003820:Denture Cleansers; D009757:Nylons; D012117:Resins, Synthetic; D019904:Polymethyl Methacrylate