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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

February 2008
Volume 39 , Issue 2

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An evaluation of bacterial contamination of barriers used in periapical tissue regeneration: Part 1—Bacterial adherence

Priya Sharma, BDS, MSD/André K. Mickel, DDS, MSD/Sami Chogle, BDS, DDS, MSD/Prem Nath Sharma, BS, MSc, PhD/Yiping W. Han, PhD/Jefferson J. Jones, DMD

Pages: 159–163
PMID: 18560654

Objective: To compare the adherence of Prevotella melaninogenica and Enterococcus faecalis to 3 guided tissue regeneration membranes: Atrisorb, Lambone, and OsseoQuest. It was hypothesized that OsseoQuest would show increased bacterial adherence compared to Lambone and Atrisorb. Method and Materials: The barriers were suspended in trypticase soy broth containing an inoculum of either P melaninogenica or E faecalis. The samples were incubated under appropriate conditions for 6, 24, and 48 hours. Following incubation, each membrane was mixed in fresh media in a vortex machine to dislodge adherent bacteria. The vortexed media was quantitatively assessed using serial dilutions for viable cell count. Results: E faecalis exhibited higher adherence compared to P melaninogenica with time. Of the membranes tested, Lambone displayed the least bacterial adherence. Conclusion: An analysis of the results indicated that bacterial adherence was time-dependent for all membranes. Membrane structure, chemical configuration, hydrophobicity, and bacterial cell surface structure were suggested as factors contributing to variance in bacterial adherence. (Quintessence Int 2008;39:159–163)

Key words: bacteria, barrier membrane, periapical surgery

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