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Carriage of oral flora on irreversible hydrocolloid and elastomeric impression materials.

Identifieur interne : 002E58 ( Ncbi/Curation ); précédent : 002E57; suivant : 002E59

Carriage of oral flora on irreversible hydrocolloid and elastomeric impression materials.

Auteurs : L P Samaranayake [Canada] ; M. Hunjan ; K J Jennings

Source :

RBID : pubmed:2051359

Descripteurs français

English descriptors

Abstract

This study assessed the carriage and persistence of oral flora on irreversible hydrocolloid and elastomeric impression materials. In the first part of the study, a single isolate each of Streptococcus mutans, Escherichia coli, Staphylococcus aureus, and Candida albicans were inoculated onto each of two elastomeric and two irreversible hydrocolloid impression surfaces artificially created in vitro. Then the inoculum was discarded, samples of impression material (13 mm in diameter) were removed over a 5-hour period, and the remainder of viable organisms were estimated. In the second part of the study, impressions were made from 21 dentate and eight edentulous patients, and bacterial counts were estimated as described. The results showed twofold to fivefold retention of bacteria on the irreversible hydrocolloids compared with the elastomeric impression surfaces. With all impression materials, the number of viable bacteria retained within 5 hours decreased 65% to 98% except for the "disinfectant" irreversible hydrocolloid Blueprint Asept, which totally destroyed the organisms in less than 3 minutes. It is concluded that the total bacterial "load" on impression surfaces is relatively low and decreases rapidly after impression making. However, disinfection of impression surfaces should be mandatory to prevent cross-infection.

PubMed: 2051359

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Le document en format XML

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<title xml:lang="en">Carriage of oral flora on irreversible hydrocolloid and elastomeric impression materials.</title>
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<name sortKey="Samaranayake, L P" sort="Samaranayake, L P" uniqKey="Samaranayake L" first="L P" last="Samaranayake">L P Samaranayake</name>
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<nlm:affiliation>Department of Oral Biology, University of Alberta, Faculty of Dentistry, Edmonton, Canada.</nlm:affiliation>
<country xml:lang="fr">Canada</country>
<wicri:regionArea>Department of Oral Biology, University of Alberta, Faculty of Dentistry, Edmonton</wicri:regionArea>
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<name sortKey="Hunjan, M" sort="Hunjan, M" uniqKey="Hunjan M" first="M" last="Hunjan">M. Hunjan</name>
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<name sortKey="Jennings, K J" sort="Jennings, K J" uniqKey="Jennings K" first="K J" last="Jennings">K J Jennings</name>
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<title level="j">The Journal of prosthetic dentistry</title>
<idno type="ISSN">0022-3913</idno>
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<term>Adult</term>
<term>Aged</term>
<term>Alginates</term>
<term>Bacteria (drug effects)</term>
<term>Bacteria (isolation & purification)</term>
<term>Bacterial Adhesion</term>
<term>Candida albicans (drug effects)</term>
<term>Candida albicans (isolation & purification)</term>
<term>Colloids</term>
<term>Dental Impression Materials</term>
<term>Dentition</term>
<term>Disinfectants (pharmacology)</term>
<term>Escherichia coli (drug effects)</term>
<term>Escherichia coli (isolation & purification)</term>
<term>Female</term>
<term>Humans</term>
<term>Jaw, Edentulous (microbiology)</term>
<term>Male</term>
<term>Mouth (microbiology)</term>
<term>Polyvinyls</term>
<term>Rubber</term>
<term>Siloxanes</term>
<term>Staphylococcus aureus (drug effects)</term>
<term>Staphylococcus aureus (isolation & purification)</term>
<term>Streptococcus mutans (drug effects)</term>
<term>Streptococcus mutans (isolation & purification)</term>
<term>Sulfides</term>
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<term>Adhérence bactérienne</term>
<term>Adulte</term>
<term>Alginates</term>
<term>Bactéries ()</term>
<term>Bactéries (isolement et purification)</term>
<term>Bouche (microbiologie)</term>
<term>Candida albicans ()</term>
<term>Candida albicans (isolement et purification)</term>
<term>Caoutchouc</term>
<term>Colloïdes</term>
<term>Denture</term>
<term>Désinfectants (pharmacologie)</term>
<term>Escherichia coli ()</term>
<term>Escherichia coli (isolement et purification)</term>
<term>Femelle</term>
<term>Humains</term>
<term>Matériaux empreinte dentaire</term>
<term>Mâchoire édentée (microbiologie)</term>
<term>Mâle</term>
<term>Polyvinyles</term>
<term>Siloxanes</term>
<term>Staphylococcus aureus ()</term>
<term>Staphylococcus aureus (isolement et purification)</term>
<term>Streptococcus mutans ()</term>
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<term>Sujet âgé</term>
<term>Sulfures</term>
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<term>Disinfectants</term>
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<term>Alginates</term>
<term>Colloids</term>
<term>Dental Impression Materials</term>
<term>Polyvinyls</term>
<term>Rubber</term>
<term>Siloxanes</term>
<term>Sulfides</term>
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<term>Escherichia coli</term>
<term>Staphylococcus aureus</term>
<term>Streptococcus mutans</term>
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<term>Candida albicans</term>
<term>Escherichia coli</term>
<term>Staphylococcus aureus</term>
<term>Streptococcus mutans</term>
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<term>Bactéries</term>
<term>Candida albicans</term>
<term>Escherichia coli</term>
<term>Staphylococcus aureus</term>
<term>Streptococcus mutans</term>
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<term>Bouche</term>
<term>Mâchoire édentée</term>
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<term>Mouth</term>
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<term>Aged</term>
<term>Bacterial Adhesion</term>
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<term>Alginates</term>
<term>Bactéries</term>
<term>Candida albicans</term>
<term>Caoutchouc</term>
<term>Colloïdes</term>
<term>Denture</term>
<term>Escherichia coli</term>
<term>Femelle</term>
<term>Humains</term>
<term>Matériaux empreinte dentaire</term>
<term>Mâle</term>
<term>Polyvinyles</term>
<term>Siloxanes</term>
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<front>
<div type="abstract" xml:lang="en">This study assessed the carriage and persistence of oral flora on irreversible hydrocolloid and elastomeric impression materials. In the first part of the study, a single isolate each of Streptococcus mutans, Escherichia coli, Staphylococcus aureus, and Candida albicans were inoculated onto each of two elastomeric and two irreversible hydrocolloid impression surfaces artificially created in vitro. Then the inoculum was discarded, samples of impression material (13 mm in diameter) were removed over a 5-hour period, and the remainder of viable organisms were estimated. In the second part of the study, impressions were made from 21 dentate and eight edentulous patients, and bacterial counts were estimated as described. The results showed twofold to fivefold retention of bacteria on the irreversible hydrocolloids compared with the elastomeric impression surfaces. With all impression materials, the number of viable bacteria retained within 5 hours decreased 65% to 98% except for the "disinfectant" irreversible hydrocolloid Blueprint Asept, which totally destroyed the organisms in less than 3 minutes. It is concluded that the total bacterial "load" on impression surfaces is relatively low and decreases rapidly after impression making. However, disinfection of impression surfaces should be mandatory to prevent cross-infection.</div>
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