Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times
Cintia Iara Oda Carvalhal, José Antônio Nunes de Mello, Lourenço Correr Sobrinho, Américo Bertolazzo Correr, Mário Alexandre Coelho Sinhoreti
Citation Information :
Carvalhal CI, de Mello JA, Sobrinho LC, Correr AB, Sinhoreti MA. Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times. J Contemp Dent Pract 2011; 12 (4):252-258.
The aim of this study was to evaluate the influence of immersion period in two disinfectant solutions on dimensional change of four elastomeric impression materials.
Materials and methods
Four representative materials of each class of elastomers: Xantopren (polydimethylsiloxane—PDS), Express (polyvinyl siloxane—PVS); Permlastic (polysulfide— PS) and Soft Impregum (polyether—EP) were mixed according to manufacturers’ instructions and then inserted into a metal matrix prepared according to the specification of ISO 4823. The molds were removed from the matrix after 7 minutes and immersed in disinfectant solutions (sodium hypochlorite 0.5 and 2% glutaraldehyde) for 5, 10, 20, 30 and 60 minutes (n = 7), except the control group, which was not immersed. Once removed from solutions, the test samples were washed in water for 15 seconds, dried and measured three times, using a comparative optical microscope, with accuracy of 0.0005 mm. The analysis of variance with three criteria and Tukey's test with significance level of 5% showed that differences in linear dimensions of the materials analyzed were not statistically significant (p > 0.05) after soaking in sodium hypochlorite 0.5 and 2% glutaraldehyde, for the tested periods of time.
Clinical significance
Combinations of molding material and disinfecting solution can be used in the dental clinic for infection control, without changing the dimensional molds, for immersion periods not longer than 20 minutes.
How to cite this article
Carvalhal CIO, de Mello JAN, Sobrinho LC, Correr AB, Sinhoreti MAC. Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times. J Contemp Dent Pract 2011;12(4): 252-258.
Bio Segurança. J Bras Orto Ortop Facial 1996;1:5-8.
Guidelines for developing a dental laboratory infection-control protocol. Int J Prosthodont 1992;5:452-56.
Effect of disinfectant agents on dimensional stability of elastomeric impression materials. J Prosthet Dent 1999;81:621-24.
Prevention of acquired immunodeficiency syndrome and hepatitis B (Part III): Disinfection of hydrophilic silicone rubber impression materials. J Prosthet Dent 1990;64:463-65.
Prevention of acquired immunodeficiency syndrome and hepatitis B (Part II): Disinfection method for hydrophilic impression materials. J Prosthet Dent 1987;58:462-65.
Efeito de desinfecção por aerossóis sobre a capacidade de umedecimento de moldes de poliéter por gesso tipo IV. Rev Odont USP 1999;13:363-67.
Council on dental therapeutics. Council on prosthetic services and dental laboratory relations. J Am Dent Assoc 1985;110:969-72.
A survey of disinfection of irreversible hydrocolloid and silicone impressions in European Union dental schools: Epidemiologic study. Int J Prosthodont 2004;17:165-71.
Disinfection of impression materials to prevent viral cross contamination: A review and a protocol. Int J Prosthodont 1993;6:480-94.
Comparison of commercial elastomeric impression materials. Oper Dent 1990;15:94-104.
Phillips materiais dentários (11th ed). Rio de Janeiro: Elsevier 2005.
Factors affecting the accuracy of elastometric impression materials. J Dent 2004;32:603-09.
Dimensional accuracy and surface detail reproduction of two hydrophilic vinyl polysiloxane impression materials tested under dry, moist, and wet conditions. J Prosthet Dent 2003;90:365-72.
Impression materials: A comparative review of impression materials most commonly used in restorative dentistry. Dent Clin North Am 200751629-42. vi.
Polyvinyl siloxane impression materials: An update on clinical use. Aust Dent J 1998;43:428-34.
Restorative Dental Materials. St Louis: Mosby, Inc. 2002.
Dimensional stability of seven elastomeric impression materials immersed in disinfectants. J Prosthet Dent 1996;76:8-14.
Accuracy of polyether and addition silicone after long-term immersion disinfection. J Prosthet Dent 1997;78:245-49.
Relationship between contact angles of die stone on elastomeric impression materials and voids in stone casts. Dent Mater 1990;6:162-66.
Volatilization of components from and water absorption of polyether impressions. J Dent 2006;34:134-38.
Recording surface detail on moist surfaces with elastomeric impression materials. Eur J Prosthodont Restor Dent 2006;14:42-46.
The effect of immersion disinfection procedures on dimensional stability of two elastomeric impression materials. J Oral Sci 2008;50:441-46.
Accuracy of a mercaptan rubber impression technique using a stock tray. J Am Dent Assoc 1971;83:1303-08.
Surface quality and longterm dimensional stability of current elastomeric impression materials after disinfection. J Prosthodont 2007;16: 343-51.
Disinfection efficiency of irreversible hydrocolloid impressions using different concentrations of sodium hypochlorite: A pilot study. J Contemp Dent Pract 2007;8:27-34.
Disinfection procedures: Their effect on the dimensional accuracy and surface quality of irreversible hydrocolloid impression materials and gypsum casts. Dent Mater 2002;18:103-10.
The dimensional stability of elastomeric impression materials following disinfection. J Prosthet Dent 1990;63:270-76.
Linear dimensional changes in dental impressions after immersion in disinfectant solutions. J Prosthet Dent 1988;60:725-28.
Effect of disinfection on the dimensional stability of polyether impression materials. J Prosthodont 2007;16:473-79.
Dimensional stability and detail reproduction of irreversible hydrocolloid and elastomeric impressions disinfected by immersion. J Prosthet Dent 1998;79:446-53.
