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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

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

Publication:
March 2008
Volume 39 , Issue 3

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An evaluation of bacterial contamination of barriers used in periapical tissue regeneration: Part 2—Bacterial penetration

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: 237–242
PMID: 18618039

Objective: To compare the relative penetration of Prevotella melaninogenica and Enterococcus faecalis through 3 guided tissue regeneration membranes: Atrisorb, Lambone, and OsseoQuest. It was hypothesized that OsseoQuest would show increased bacterial penetration when compared to Lambone and Atrisorb. Method and Materials: Centrifuge tubes containing trypticase soy broth were sealed with circular sections of membranes and placed in test tubes containing culture media. The bacterial penetration was assessed by passage of bacteria from the outer tube culture media to the inner centrifuge tube media through the membrane. After incubation for 4 and 48 hours, the media from the outer and inner tubes were compared for bacterial count. Results: P melaninogenica exhibited 91% penetration for Lambone in 2 days, while OsseoQuest displayed 87% penetration with E faecalis in the same time. Atrisorb displayed a minimal penetration with both bacteria (2%). Conclusion: Atrisorb displayed the least bacterial penetration, which may be attributed to membrane structure, chemical configuration, hydrophobicity, and porosity of tested membranes. (Quintessence Int 2008;39:237–242)

Key words: bacterial penetration, barrier membranes, Enterococcus faecalis, guided tissue regeneration membrane, Prevotella melaninogenica, surgery

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