Microbiology

JOURNAL OF CLINICAL MICROBIOLOGY, Mar. 1980, p. 205-208 0095-1137/80/03-0205/04$02.00/0 Vol. 11, No. 3 Comparison of Selective inventory and Plating Methods for Isolation of streptococcitococci mutans from Root Surface alveolar consonant Plaques R. P. ELLEN,`* E. D. FILLERY, AND D. W. BANTING2 Departments of Clinical and biologic Sciences, University of Toronto, mental faculty of Dentistry, Toronto, Canada, and Department of Community and paediatric Dentistry, University of Western Ontario, Faculty of Dentistry, London, Ontario, Canada2 Approximately 150 sound calm step before in 44 subjects prone to root draw near nether region were sampled longitudinally to determine the microbial flora associated with root tooth decay initiation. During the first 16 months of the study, a comparison of Streptococcus mutans recuperation was made by using three bacteriological media: mitis-salivarius agar-agar (MSA), mitis-salivarius-bacitracin-sucrose agar ( MSB), and a partially selective mannitol-containing broth. Total strep and S. mutans populations were found to be much lower than in introductory reports. MSB was more selective; S. mutans was detected in many an(prenominal) samples when its numbers were too low for isolation on MSA. However, recuperation of S.

mutans was greater on MSA than on MSB for most samples regenerate colonies on both media. Mannitolcontaining broth used as an enrichment military group yielded the highest frequency of S. mutans isolation among the three media. Considering its recognized cariogenicity in science laboratory animals and its repeated association with coronal de! ntal caries in humans, the frequent isolation of Streptococcus mutans from established root lesions may lead to its implication in the etiology of root surface caries as well. Microbiological data relating to the human root caries problem have been limited to studies of extracted teeth (6, 9), pooled plaques from populations known to intumescence root caries (5), and single plaques overlying root lesions of isolated age (12). In the latter...If you want to get a full(a) essay, rear it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay