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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

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

May 2010
Volume 41 , Issue 5

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Early Antimicrobial Activity Of Intracanal Medications On The External Root Surface Of Periodontally Compromised Teeth

Mônica Reggi Reis Silva, DDS, MSD/Leandro Chambrone, DDS, MSD/Antônio Carlos Bombana, DDS, MSD, PhD/Luiz A. Lima, DDS, MSD, PhD

Pages: 427–431
PMID: 20376379

Objective: To verify the effect of scaling and root planing on the antimicrobial activity of intracanal medications on the external root surface of periodontally compromised teeth. Method and Materials: Forty single-rooted extracted teeth were randomly assigned for visible calculus removal or scaling and root planing. Samples were separated into four groups—chlorhexidine, tetracycline hydrochloride, calcium hydroxide, or saline solution—and immersed in semisolid media and seeded with Micrococcus luteus for 24 hours. The zones of inhibition were measured using a profile projector. Results: Calcium hydroxide and saline solution did not show bacterial growth inhibition. Chlorhexidine and tetracycline showed the occurrence of zones of inhibition in 70% and 40% of specimens, respectively. Conclusion: Partial antimicrobial activity on the external root surface was found when chlorhexidine and tetracycline solutions were used as intracanal medications; however, root planing procedures may modify this condition. (Quintessence Int 2010;41:427–431)

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