title: Effect of experimental Ricinus communis solution for denture cleaning on the properties of acrylic resin teeth.
abstract: This study evaluated Knoop hardness, surface roughness and color alteration of artificial teeth for dentures after immersion in water, 1% sodium hypochlorite and an experimental solution of 2% Ricinus communis (RC). Thirty specimens of Vipi, Biolux and Trilux were analyzed. Tests of Knoop hardness, surface roughness and color alteration were conducted immediately after specimen preparation (T0) and after two immersion protocols for 15 days (ΔT(15)) and 183 days (ΔT(183)). Data variation (ΔT) were subjected to ANOVA and Tukey's test (p<0.05). At ΔT(15), Vipi presented hardness increase and Biolux presented the highest variation (p=0.01). RC caused the highest increase in hardness (p=0) and the lowest increase (p=0.005) in roughness. Biolux presented the lowest color alteration (p =0). At ΔT(183), Trilux underwent the highest hardness variation (p=0). Biolux presented an increase in roughness (p=0). There was no significant differences in color alteration among the artificial teeth (p=0.06) and among solutions (p=0.08) after 183 days of immersion. All solutions (distilled water, 1% sodium hypochlorite and 2% RC) caused alterations on the analyzed properties. Both immersion protocols caused alterations on the analyzed properties.
authors.affiliation: Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo, Brazil.
authors.forename: Marina Xavier
authors.initials: MX
authors.lastname: Pisani
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Macedo
authors.forename: Helena de Freitas Oliveira
authors.initials: Hde F
authors.lastname: Paranhos
authors.forename: Cláudia Helena Lovato da
authors.initials: CH
authors.lastname: Silva
mesh_terms: D000180:Acrylic Resins; D003778:Dentures; D006801:Humans; D008422:Materials Testing; D009910:Oral Hygiene / Q000379:methods*; D028321:Plant Preparations / Q000494:pharmacology*; D012278:Ricinus; D012973:Sodium Hypochlorite / Q000494:pharmacology; D014093:Tooth, Artificial
chemical_list: D000180:Acrylic Resins; D028321:Plant Preparations; D012973:Sodium Hypochlorite