In this study, an effort has been made to evaluate spray-form sodium hypochlorite with different concentrations and contact periods. Among them, 0.5% sodium hypochlorite and 2% glutaraldehyde in a spray form are considered effective against both Gram-positive and Gram-negative microorganisms. To prevent cross-infection, many products are being developed. The casts made of dental stone poured against contaminated impressions may be a medium for cross-contamination between patients and the dental personnel. An indirect source of disease transmission is contaminated impressions. Majority of these organisms pose significant risk to dental personnel, such as hepatitis C, HIV virus, etc. It is a matter of concern in prosthodontics as well, where impression materials are most commonly used.ĭental personnel are exposed directly or indirectly to a wide variety of microorganisms. Infection control has assumed prime importance in dentistry. Efficacy of various spray disinfectants on irreversible hydrocolloid impression materials: An in vitro study. How to cite this URL: Doddamani S, Patil RA, Gangadhar S A. Keywords: Irreversible hydrocolloid impression, spray disinfectants, dental casts How to cite this article: Doddamani S, Patil RA, Gangadhar S A. Not all ADA-approved concentrations of surface disinfectants work equally well on irreversible hydrocolloid impression materials. subtilis.Ĭonclusion: Sodium hypochlorite with a concentration of 5.25% was the most effective disinfectant and required the shortest contact time (1 min). None were able to effect a 4 log10 reduction against B. viridans followed by 0.525% sodium hypochlorite and 2% glutaraldehyde for 10 min. Results: Sodium hypochlorite, 5.25%, showed 1-min exposure time which was able to effect a 4log10 reduction in bacterial counts against S. Materials and Methods: The effects of four spray disinfectants, 5.25% sodium hypochlorite, 0.525% sodium hypochlorite, 1:213 (1 part in 213 parts of water) povidone iodine, and 2% glutaraldehyde along with control (distilled water) on irreversible hydrocolloid impressions contaminated with Staphylococcus aureus, Bacillus subtilis and Streptococcus viridans were studied. All the spray disinfectants are not equally effective against these microorganisms.Īims and Objectives: The aim was to compare the effectiveness of different spray disinfectants on irreversible hydrocolloid impressions and to find out the most effective dilution, contact time, and effect against each microorganism studied. Santosh Doddamani 1, Raghunath A Patil 2, SA Gangadhar 2ġ Department of Prosthodontics, Bapuji Dental College and Hospital, Belgaum, Karnataka, India 2 Department of Prosthodontics, KLE VK Institute of Dental Sciences, KLE University, Belgaum, Karnataka, IndiaĬlick here for correspondence address and email Date of Submissionīackground: Most of the materials (casts, impressions, etc.) that are sent to the dental laboratories show the presence of numerous pathogenic microorganisms. Efficacy of various spray disinfectants on irreversible hydrocolloid impression materials: An in vitro study
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