title: Effect of different chemical disinfectants on color stability of acrylic denture teeth.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effects of chemical disinfectants on the color stability of acrylic denture teeth (ADT) via spectrophotometric analysis.
  
  
  METHODS
  A total of 120 central ADT specimens were randomly assigned to eight experimental groups and immersed in the following solutions (n = 15). Tap water/control group (CON), neutral soap (NTS), 2% sodium hypochlorite (SHC1), 5.25% sodium hypochlorite (SHC2), sodium perborate (SPB), povidone-iodine (PVI), chlorhexidine gluconate (CHG), and glutaraldehyde (GTA). Color measurements of teeth were performed by spectrophotometry after 10, 30, 48, 72, 144, and 960 immersion cycles in each tested solution. Color differences (ΔE*) were then evaluated using the Commission Internationale D'Eclairage (CIE) L*a* b* color system. Furthermore, Kruskal-Wallis, Mann-Whitney U, and Friedman comparison tests (α = 0.05) were performed on all data.
  
  
  RESULTS
  There were significant differences in ΔE* values (p < 0.05) among the eight experimental groups. In addition, the highest ∆E* values were obtained in group SHC2, followed, respectively, by the SHC1, CHG, SPB, PVI, NTS, and CON groups.
  
  
  CONCLUSIONS
  All the chemical disinfectants used in the study affected the color values of ADTs. Furthermore, ΔE* values increased along with the number of immersion cycles and total immersion time.
authors.affiliation: Associate Professor, Department of Prosthodontics, Gulhane Military Medical Academy, Ankara, Turkey.
authors.forename: Bulent
authors.initials: B
authors.lastname: Piskin
authors.forename: Cumhur
authors.initials: C
authors.lastname: Sipahi
authors.forename: Hakan
authors.initials: H
authors.lastname: Akin
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D001881:Borates / Q000737:chemistry; D002710:Chlorhexidine / Q000031:analogs & derivatives / Q000737:chemistry; D003116:Color; D019551:Dental Disinfectants / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003820:Denture Cleansers / Q000737:chemistry*; D005976:Glutaral / Q000737:chemistry; D006801:Humans; D007101:Immersion; D008422:Materials Testing; D011206:Povidone-Iodine / Q000737:chemistry; D011897:Random Allocation; D012915:Soaps / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000737:chemistry; D013053:Spectrophotometry / Q000295:instrumentation; D013499:Surface Properties; D014093:Tooth, Artificial; D014867:Water / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D001881:Borates; D019551:Dental Disinfectants; D003764:Dental Materials; D003820:Denture Cleansers; D012915:Soaps; D014867:Water; D011206:Povidone-Iodine; D012973:Sodium Hypochlorite; C010882:chlorhexidine gluconate; D002710:Chlorhexidine; D005976:Glutaral; C027707:sodium perborate
keywords: Denture teeth; color stability; disinfectant; spectrophotometry