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[Types of interbacterial coaggregation in dental plaque]
J C Robert1, M Bonnaure-Mallet
1Centre de Recherches Odontologiques, 35000 Rennes.
Actualites Odonto-Stomatologiques
|December 1, 1990
Summary
Scanning electron microscopy revealed distinct microbial formations like "corn-cob" and "bristle brush" in the gingival crevice of children and dogs, offering insights into dental calculus development.
Area of Science:
- Microbiology
- Oral Biology
- Microscopy
Context:
- Gingival crevice harbors complex microbial ecosystems.
- Dental calculus formation is a significant oral health concern.
- Microbial structures influence oral biofilm development.
Purpose:
- To investigate the microbial flora composition within the gingival crevice using scanning electron microscopy (SEM).
- To characterize specific microbial arrangements, such as "corn-cob" and "bristle brush" formations.
- To elucidate the developmental stages and potential mechanisms of dental calculus formation.
Summary:
- SEM observations of teeth-gingiva fragments from children and dogs identified unique microbial structures in the gingival crevice.
- "Corn-cob" formations were preceded by coccal apposition, while "bristle brush" structures followed abundant extracellular material.
- Inter- and intra-bacterial calcification models are proposed as mechanisms for dental calculus development.
Impact:
- Provides novel insights into the micro-architecture of oral biofilms.
- Contributes to understanding the etiology of dental calculus.
- Offers potential targets for therapeutic interventions in periodontal disease.