The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 8 , ISSUE 4 ( May, 2007 ) > List of Articles

RESEARCH ARTICLE

Disinfection Efficiency of Irreversible Hydrocolloid Impressions Using Different Concentrations of Sodium Hypochlorite: A Pilot Study

Maryam Memarian, Mohamad Reza Fazeli, Hossein Jamalifar, Ahmad Azimnejad

Citation Information : Memarian M, Fazeli MR, Jamalifar H, Azimnejad A. Disinfection Efficiency of Irreversible Hydrocolloid Impressions Using Different Concentrations of Sodium Hypochlorite: A Pilot Study. J Contemp Dent Pract 2007; 8 (4):27-34.

DOI: 10.5005/jcdp-8-4-27

License: CC BY-NC 3.0

Published Online: 00-05-2007

Copyright Statement:  Copyright © 2007; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

Dental impressions are potential sources of bacterial contamination which could eventually lead to transmissible infectious diseases through the blood or saliva. Sodium hypochlorite is an effective disinfectant recommended by the American Dental Association (ADA) in a 1:10 dilution for a ten minute immersion to disinfect irreversible hydrocolloid impressions. As the ADA protocol is sometimes neglected in busy practice settings, this pilot study was designed to determine an efficient and effective protocol for disinfection of irreversible hydrocolloid impressions.

Methods and Materials

Various concentrations of sodium hypochlorite and disinfection times were challenged against irreversible hydrocolloid impressions contaminated with six Gram-positive and Gram-negative bacteria.

Results

A two minute immersion time in a 0.6% solution of sodium hypochlorite protocol was found to prevent bacterial growth on the impressions.

Conclusion

Disinfection of irreversible hydrocolloid impressions in a 0.6% solution of sodium hypochlorite for two minutes was as effective as the ADA's protocol of using a 0.5% sodium hypochlorite solution for ten minutes to destroy the test bacteria.

Citation

Memarian M, Fazeli MR, Jamalifar H, Azimnejad A. Disinfection Efficiency of Irreversible Hydrocolloid Impressions Using Different Concentrations of Sodium Hypochlorite: A Pilot Study. J Contemp Dent Pract 2007 May;(8)4:027-034.


PDF Share
  1. A survey of disinfection of irreversible hydrocolloid and silicone impressions in European Union dental schools: Epidemiologic study. Int J Prosthodont. 2004;17(2):165-71.
  2. Carriage of oral flora on irreversible hydrocolloid and elastomeric impression materials. J Prosthet Dent. 1991;65(2):244-9.
  3. Immersion disinfection of irreversible hydrocolloid impressions with sodium hypochlorite. Part I: Microbiology. Int J Prosthodont. 1994;7(3):234-8.
  4. Gypsum cast as a potential source of microbial cross-contamination. J Prosthet Dent. 1983;49(2):210-11.
  5. A microbiological investigation following the disinfection of alginate and addition cured silicone rubber impression materials. Eur J Prosthodont Res Dent. 1998;6(3):97-101.
  6. Centers for Disease Control and Prevention (CDC). Guidelines for infection control in dental health-care settings--2003. MMWR Recomm Rep. 2003;52(RR-17):1-61.
  7. Immersion disinfection of irreversible hydrocolloid impressions with sodium hypochlorite. Part II: Effect on gypsum. Int J Prosthodont. 1994;7(4):315-22.
  8. Disinfection method for impression materials: freedom from fear of hepatitis B and acquired immunodeficiency syndrome. J Prosthet Dent. 1986;56(4):451-4.
  9. Managing dental impressions and casts of patients with communicable diseases. Gen Dent. 1989;37(6):490-5.
  10. The persistence of microorganisms on impression materials following disinfection. Int J Prosthodont. 1991;4(4):382-7.
  11. Disinfection of irreversible hydrocolloid impressions: A comparative study. Int J Prosthodont. 1992;5(6):563-7.
  12. Immersion disinfection of irreversible hydrocolloid impression in PH adjusted sodium hypochlorite. Part I: Microbiology. Int J Prosthodont. 1996;9(3):217-22.
  13. Efficacy of various spray disinfection on irreversible hydrocolloid impressions. Int J Prosthodont. 1992;5(1):47-54.
  14. Efficacies of selected disinfectants against Mycobacterium tuberculosis. J Clin Microbiol. 1990;28(10):2234-9.
  15. Linear dimensional changes in dental impressions after immersion in disinfectant solutions. J Prosthet Dent. 1988;60(6):725-8.
  16. Dimensional stability of dental impressions after immersion disinfection. J Am Dent Assoc. 1986;113(3):419-22.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.