Colonization Resistance of Defined Bacterial Plaques to Streptococcus mutans Implantation on Teeth in a Model Mouth
| Autor: | Helen D. Donoghue, C. J. Perrons |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
0301 basic medicine
Colony Count Microbial Dental Plaque Veillonella Colonisation resistance Dental plaque Models Biological Microbiology Streptococcus mutans 03 medical and health sciences 0302 clinical medicine Antibiosis medicine Actinomyces Humans General Dentistry Veillonella dispar Streptococcus mitior Mouth biology 030206 dentistry biology.organism_classification medicine.disease 030104 developmental biology Streptococcus sanguis |
| Zdroj: | Journal of Dental Research. 69:483-488 |
| ISSN: | 1544-0591 0022-0345 |
| DOI: | 10.1177/00220345900690021301 |
| Popis: | We investigated the ability of Streptococcus mutans C67-1 to colonize simple bacterial plaques and the effects of age and stability of the pre-formed plaque on colonization resistance. Mixed plaques of Actinomyces viscosus WVU627, 'Streptococcus mitior' LPA-1, and Veillonella dispar OMZ193 were grown on tcoth segments, mounted back to back for simulation of approximal sites in a model mouth for 66 h. S. mutans C67-1 was either included in the original inoculum or super-inoculated onto the developing plaque. Inclusion of S. mutans C67-1 did not alter the total viable counts, but the proportional composition changed due to inter-species interactions. Colonization resistance of the mixed-plaque samples developed within 24 h, although S. mutans C67-1 was always able to colonize these stagnation sites. Colonization resistance of 24-hour plaque against a fresh isolate, S. mutans CP3, was also studied. There was greater colonization resistance by the basic plaque to this organism, compared with S. mutans C67-1, although the reasons for this were not clear. These initial experiments demonstrate the way in which the factors involved in bacterial colonization resistance in microbial films on teeth can be studied under controlled conditions. |
| Databáze: | OpenAIRE |
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