title: Evaluation of the color durability of acrylic resin veneer materials after immersion in common beverages at different time intervals: A spectrophotometric study.
abstract: BACKGROUND
  Proper function, esthetics, and cost are the prime factors to be considered while selecting bridge veneering materials. The purpose of the study is to evaluate color durability of acrylic veneer materials after immersion in common beverages at different time intervals.
  
  
  METHODS
  Spectrophotometer was used for taking color measurements based on the transmission of light through the specimens made of the selected materials which were Tooth moulding powder (DPI) and Acrylux (Ruthinium). Thirty specimens of standardized dimensions were prepared from each material. The specimens were divided into three groups of 10 each. One group of each material was immersed in tea (TajMahal) and another group of each material in cola (Pepsi) as the staining solutions. The remaining group of 10 from each material served as control and was stored in distilled water. Color measurements were obtained pre-immersion, and after 1, 15, and 30 days of immersion.
  
  
  RESULTS
  Tooth moulding powder displayed better color durability than Acrylux over the 1 month immersion period in both staining solutions. Tea resulted in more discoloration compared to cola (Pepsi).
  
  
  CONCLUSIONS
  The difference in the color durability of Acrylux and Tooth moulding powder may be attributed to the differences in the composition of tested resin veneering materials, i.e. their polar properties, which contribute to the absorption of staining solution, and the different brands and the strengths of the solutions.
authors.affiliation: Department of Prosthetic Dentistry and Crown and Bridge, MAHSA University, Kuala Lumpur, Malaysia.
authors.forename: Shivani
authors.initials: S
authors.lastname: Kohli
authors.forename: Shekhar
authors.initials: S
authors.lastname: Bhatia
mesh_terms: D000180:Acrylic Resins / Q000627:therapeutic use*; D001628:Beverages / Q000032:analysis*; D003116:Color; D006801:Humans; D008422:Materials Testing; D013053:Spectrophotometry / Q000379:methods; D013696:Temperature; D013997:Time Factors
chemical_list: D000180:Acrylic Resins