title: [Effects of cleaners on the color stability of prosthesis silicone rubbers].
abstract: OBJECTIVE
  To evaluate the effect of different cleaners on the color stability of two silicone rubbers used for maxillofacial prosthesis, and to provide recommendations for clinical use.
  
  
  METHODS
  Thirty skin-color columniform specimens (12 mm diameter, 10 mm height) of two silicone rubber (A:A-2000; Z:ZY-1) were prepared, randomly divided into 6 groups according to the table of random number, and cleaned with the following solutions: isopropyl alcohol (I), three kinds of denture cleaners (P: Polident, S: Steradent, C: Cleansoft) and distilled water (D), simulating the total immersion time of 1 year (1, 15, 10, 3 and 10 min each time respectively). Control group was kept in dark place without treatment. The L(*), a(*), b(*) value were tested before and after immersion. Then color difference value was calculated.
  
  
  RESULTS
  Color differences were different among groups. Color difference in group I (A: 2.15, Z: 2.00) were significantly greater than that in any other group. There were no significant differences between groups using denture cleaner P (A: 0.36, Z: 0.36), C (A: 0.42, Z: 0.37) and S (A: 0.33, Z: 0.38), and group D (A: 0.22, Z: 0.23).
  
  
  CONCLUSIONS
  Isopropyl alcohol causes the most severe fading, and denture cleaners and distilled water cause obscure fading.
authors: Department of Prosthodontics, Sun Yat-sen University, Guangzhou 510055, China.
authors: Zhe-wu
authors: ZW
authors: Xu
authors: Jie
authors: J
authors: Jiang
authors: Xian-xian
authors: XX
authors: Zhang
authors: Guo-bin
authors: GB
authors: Liang
authors: Yan
authors: Y
authors: Li
mesh_terms: D019840:2-Propanol / Q000737:chemistry; D001881:Borates / Q000737:chemistry; D003116:Color; D003820:Denture Cleansers / Q000737:chemistry*; D008422:Materials Testing; D008447:Maxillofacial Prosthesis; D010710:Phosphates / Q000737:chemistry; D017797:Prosthesis Coloring; D012826:Silicone Elastomers; D012965:Sodium Chloride / Q000737:chemistry; D013431:Sulfates / Q000737:chemistry
chemical_list: D001881:Borates; D003820:Denture Cleansers; D010710:Phosphates; D012826:Silicone Elastomers; C072295:Steradent; D013431:Sulfates; D012965:Sodium Chloride; C102654:Polident; D019840:2-Propanol