Evaluation of some properties of elastomeric dental impression materials after disinfection
Keywords:Impression materials, disinfection, dimensional stability, spray, immersion
Backgrounds and objectives: Dental impressions present a risk to spread infections among dental practitioners and should be disinfected to prevent the spread of these microorganisms. Different disinfectant materials and techniques can be used to eliminate this threat. The purpose of this study was to evaluate the effect of some disinfectant materials with two different techniques on surface detail and dimensional stability of elastomeric impression materials.
Materials and methods: Three dental impression materials were used in this study, Vinyl polysiloxane, Polyether and Vinyl polyether siloxane that were disinfected with sodium hypochlorite, Dettol and Cavex Impresafe by using two techniques, spraying and immersion methods for each.
Results: The results of this study showed a significant difference of the dimensions between immediate and 48 hours after disinfection P<0.05 with the maximum change (1.5%) appeared with vinyl polysiloxane material when immersed in sodium hypochlorite for 10 minutes and stored for 48 hours, but this change was acceptable by the ADA. Polyether showed the least dimensional change of 0.05% after 7 hours from disinfection with Cavex impresafe and the latter caused the least change on the impression materials.
Conclusion: Within the limitations of this in vitro study, it was concluded that dental impression materials can be disinfected without causing dimensional changes that affect the manufacture of dental prosthesis.
Vitti RP, Correr-Sobrinho L, Sinhoreti MAC. Dimensional accuracy of stone casts made by a monophase impression technique using different elastomeric impression materials. Braz J Oral Sci. 2011 Sep;10(3):175–9.
Wadhwa SS, Mehta R, Duggal N, Vasudeva K. The effect of pouring time on the dimensional accuracy of casts made from different irreversible hydrocolloid impression materials. Contemp Clin Dent. 2013;4(3):313–8.
Nassar U, Flores-Mir C, Heo G, Torrealba Y. The effect of prolonged storage and disinfection on the dimensional stability of 5 vinyl polyether silicone impression materials. J Adv Prosthodont. 2017 Jun;9(3):182–7.
Sebastiani FR, Dym H, Kirpalani T. Infection Control in the Dental Office. Dent Clin. 2017 Apr 1;61(2):435–57.
Walker MP, Rondeau M, Petrie C, Tasca A, Williams K. Surface quality and long-term dimensional stability of current elastomeric impression materials after disinfection. J Prosthodont Off J Am Coll Prosthodont. 2007 Oct;16(5):343–51.
Revised American Dental Association Specification No. 19 for Non-Aqueous, Elastomeric Dental Impression Materials. J Am Dent Assoc. 1977 Apr 1;94(4):733-41.
Nassar U, Chow AK. Surface Detail Reproduction and Effect of Disinfectant and Long-Term Storage on the Dimensional Stability of a Novel Vinyl Polyether Silicone Impression Material. J Prosthodont Off J Am Coll Prosthodont. 2015 Aug;24(6):494–8.
Chopra S, Gupta NK, Tandan A, Dwivedi R, Gupta S, Agarwal G. Comparative evaluation of pressure generated on a simulated maxillary oral analog by impression materials in custom trays of different spacer designs: An in vitro study. Contemp Clin Dent. 2016;7(1):55–60.
Badrian H, Davoudi A, Molazem M, Zare MH. The effect of spraying different disinfectants on condensational silicone impressions; an in vitro study. J Indian Prosthodont Soc. 2015;15(3):263–7.
Kalantari MH, Malekzadeh A, Emami A. The Effect of Disinfection with Sodium Hypochlorite 0.5% on Dimensional Stability of Condensation Silicone Impression Materials of Speedex and Irasil. J Dent. 2014 Sep;15(3):98–103.
Estrela C, Estrela CRA, Barbin EL, Spanó JCE, Marchesan MA, Pécora JD. Mechanism of action of sodium hypochlorite. Braz Dent J. 2002;13(2):113–7.
Kim K-M, Lee J-S, Kim K-N, Shin S-W. Dimensional changes of dental impression materials by thermal changes. J Biomed Mater Res. 2001;58(3):217–20.
Nassar U, Oko A, Adeeb S, El-Rich M, Flores-Mir C. An in vitro study on the dimensional stability of a vinyl polyether silicone impression material over a prolonged storage period. J Prosthet Dent. 2013 Mar;109(3):172–8.
Stober T, Johnson GH, Schmitter M. Accuracy of the newly formulated vinyl siloxanether elastomeric impression material. J Prosthet Dent. 2010 Apr 1;103(4):228–39.
Corso M, Abanomy A, Di Canzio J, Zurakowski D, Morgano SM. The effect of temperature changes on the dimensional stability of polyvinyl siloxane and polyether impression materials. J Prosthet Dent. 1998 Jun;79(6):626–31.
Dreesen K, Kellens A, Wevers M, Thilakarathne PJ, Willems G. The influence of mixing methods and disinfectant on the physical properties of alginate impression materials. Eur J Orthod. 2013 Jun 1;35(3):381–7.
Clancy JMS, Scandrett FR, Ettinger RL. Long-term dimensional stability of three current elastomers. J Oral Rehabil. 1983 Jul;10(4):325–33.
Kanehira M, Finger WJ, Endo T. Volatilization of components from and water absorption of polyether impressions. J Dent. 2006 Feb;34(2):134–8.
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