title: Evaluation of staining susceptibility of resin artificial teeth and stain removal efficacy of denture cleansers.
abstract: OBJECTIVE
  To assess the staining susceptibility of four acrylic resin (Ivostar, SR Vivodent PE, Major Dent, Integral) and a nanocomposite resin (Veracia) artificial teeth and to evaluate the stain removal efficacy of denture cleansers.
  
  
  METHODS
  Sixty maxillary incisors of each brand (total = 300) were divided into three groups according to staining solution as coffee, red wine and tea. Baseline color measurements were performed with a spectrophotometer. Specimens were immersed in staining solutions for 14 h (2 h × 7 days) and then second color measurements were performed. Each group was further divided into four sub-groups according to denture cleanser as Corega tabs, Fittydent, NaOCl (0.5%) and distilled water (control) (n = 5). Specimens were immersed in denture cleansers for 8 h and third color measurements were made. Thus, the weekly simulation period was completed. This cycle was repeated 12 times to simulate a 3-month time period and measurements were performed at the end of the 4th, 8th and 12th cycles. ΔE values were calculated and data were analyzed with 3-way repeated measures ANOVA and Bonferroni tests.
  
  
  RESULTS
  Significant color differences were found among the teeth and staining solutions, but all of the color differences were in the clinically acceptable range (ΔE < 5.5). Integral showed the highest ΔE values for all solutions, while Ivostar and Vivodent demonstrated the lowest ΔE values for red wine and tea solutions. There was no significant difference among the denture cleansers in terms of stain removal efficacy.
  
  
  CONCLUSIONS
  Cross-linked acrylic (Integral) and nanocomposite (Veracia) resin teeth were more susceptible to staining. Denture cleansers were efficient on stain removal from artificial teeth.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Near East University , Mersin 10 , Turkey.
authors.forename: Sevcan
authors.initials: S
authors.lastname: Kurtulmus-Yilmaz
authors.forename: Sule Tugba
authors.initials: ST
authors.lastname: Deniz
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D003069:Coffee; D003116:Color; D003820:Denture Cleansers / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D011897:Random Allocation; D012973:Sodium Hypochlorite / Q000737:chemistry; D013053:Spectrophotometry; D013499:Surface Properties; D013662:Tea; D013696:Temperature; D013997:Time Factors; D014093:Tooth, Artificial; D014867:Water; D014920:Wine
chemical_list: D000180:Acrylic Resins; D003069:Coffee; D003820:Denture Cleansers; D016877:Oxidants; D013662:Tea; C540407:corega tabs; D014867:Water; D019904:Polymethyl Methacrylate; D012973:Sodium Hypochlorite
keywords: acrylic resin; color stability; denture teeth; discoloration; nanocomposite