Comparative effects of denture cleansers on physical properties of polyamide and polymethyl methacrylate base polymers

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DURKAN R., AYDOĞAN AYAZ E., Bagis B., GÜRBÜZ A., Ozturk N., KORKMAZ F. M.

DENTAL MATERIALS JOURNAL, vol.32, no.3, pp.367-375, 2013 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 3
  • Publication Date: 2013
  • Doi Number: 10.4012/dmj.2012-110
  • Journal Name: DENTAL MATERIALS JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.367-375
  • Keywords: Denture cleansers, Base resins, Physical properties, Polyamide resins, Polystyrene graft copolymer resins, SURFACE-ROUGHNESS, ACRYLIC RESINS, COLOR STABILITY, IMPACT STRENGTH, DISINFECTION, HARDNESS, PLAQUE, RELINE
  • Karadeniz Technical University Affiliated: Yes

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 (alpha=0.05). Delta E, Delta L*, Delta a* and Delta b* 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.