title: The effect of disinfection on irreversible hydrocolloid and type III gypsum casts.
abstract: Under standardised conditions, 80 impressions were made of a ruled stainless steel die (ISO Specification 1563) using irreversible hydrocolloid (alginate). The alginates were subsequently treated with 3 commercially available disinfectants, Perform-ID, ImpressiVand Dimenol and poured with type III gypsum. The alginates were evaluated for surface detail reproduction and the gypsum for surface detail reproduction and hardness. Disinfection with Perform ID significantly affected the surface detail reproduction of alginate while Dimenol and ImpressiV did not. Perform ID and Dimenol both significantly affect the hardness of poured type III gypsum casts while ImpressiV did not.
authors.affiliation: University College London, Eastman Dental Institute.
authors.forename: Syed Mohammed Aun
authors.initials: SM
authors.lastname: Hussain
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Tredwin
authors.forename: Michael
authors.initials: M
authors.lastname: Nesbit
authors.forename: David R
authors.initials: DR
authors.lastname: Moles
mesh_terms: D000464:Alginates; D000704:Analysis of Variance; D002133:Calcium Sulfate; D019551:Dental Disinfectants; D003760:Dental Impression Materials; D004203:Disinfection / Q000379:methods; D006244:Hardness; D003765:Models, Dental; D015588:Observer Variation; D018709:Statistics, Nonparametric; D013499:Surface Properties
chemical_list: D000464:Alginates; D019551:Dental Disinfectants; D003760:Dental Impression Materials; D002133:Calcium Sulfate