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Quintessence International



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Quintessence Int 42 (2011), No. 10     29. Sep. 2011
Quintessence Int 42 (2011), No. 10  (29.09.2011)

Online Article, Page 890, PubMed:22026004

Online Article: Do dental impression materials play a role in cross contamination?
Matalon, Shlomo / Eini, Amir / Gorfil, Colin / Ben-Amar, Ariel / Slutzky, Hagay
Objective: Dentists are required to institute infectious control procedures. Dental impression materials possessing antimicrobial properties may aid in reducing the risk of cross contamination since impression materials might play a role as carriers. The purpose of this study was to evaluate the antimicrobial properties of four impression materials.
Method and Materials: Four impression materials-Orthoprint, Impregum Penta, Aquasil Ultra Monophase, and Permlastic-were evaluated by the direct contact test. The materials were tested in contact with Enterococcus faecalis, Staphylococcus aureus, Staphylococcus epidermidis, and Candida albicans. The materials were mixed; allowed to set; and examined immediately and after aging for 24, 48, and 72 hours and 1 week. Two-way ANOVA, one-way ANOVA, and Tukey multiple comparison procedures were applied to the results.
Results: Impregum Penta presented the broadest antibacterial spectrum of all the materials tested. There was a complete growth inhibition of S aureus and S epidermidis, and it sustained this ability for at least 7 days. It also showed an antifungal effect by partially inhibiting the growth of C albicans, a quality that was seen only immediately after setting. Aquasil Ultra showed an antifungal effect only immediately after setting. Permlastic showed a complete growth inhibition when in contact with C albicans and sustained this ability for at least 7 days. No significant antimicrobial properties were recorded for Orthoprint. When in contact with E faecalis, no significant antibacterial properties were recorded for any of the materials.
Conclusion: None of the tested materials exhibited a long-lasting or complete antibacterial and antifungal property. Therefore, disinfection of impressions is essential.

Keywords: antibacterial, cross contamination, impression materials