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Antimicrobial Agents and Chemotherapy, April 2003, p. 1443-1446, Vol. 47, No. 4
0066-4804/03/$08.00+0     DOI: 10.1128/AAC.47.4.1443-1446.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Antibiotic Resistance in Bacteria Isolated from Subgingival Plaque in a Norwegian Population with Refractory Marginal Periodontitis

Trude Handal,1* Dominique A. Caugant,1,2 and Ingar Olsen1

Institute of Oral Biology, Dental Faculty, University of Oslo,1 Division of Infectious Disease Control, Norwegian Institute of Public Health, Oslo, Norway2

Received 23 September 2002/ Returned for modification 14 November 2002/ Accepted 23 January 2003

The prevalence of ß-lactamase-producing bacteria in subgingival plaque from patients with refractory periodontitis in Norway was assessed by the chromogenic nitrocefin method. ß-Lactamase activity was detected in 68% of the patients. Enzyme-producing strains belonged predominantly to the genus Prevotella; others were staphylococci, enteric gram-negative rods, and Bacillus spp.

* Corresponding author. Mailing address: Institute of Oral Biology, Dental Faculty, University of Oslo, P.O. Box 1052 Blindern, 0316 Oslo, Norway. Phone: (47) 22840327. Fax: (47) 22840305. E-mail: thandal{at}odont.uio.no.

Antimicrobial Agents and Chemotherapy, April 2003, p. 1443-1446, Vol. 47, No. 4
0066-4804/03/$08.00+0     DOI: 10.1128/AAC.47.4.1443-1446.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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