Related Experiment Video
Updated: May 23, 2026

In Situ Detection of Bacteria within Paraffin-embedded Tissues Using a Digoxin-labeled DNA Probe Targeting 16S rRNA
Published on: May 21, 2015
Bacterial colonization patterns of periodontal pockets in different ages
Francesco S Martelli1, Simone Stori, Alessio Mengoni
1IRF in Microdentistry, via dell'Ariento 4, 50123 Florence, Italy. info@microdentistry.it
Abstract:
The aim of this study was to investigate subgingival bacterial composition of untreated Italian subjects with aggressive and chronic periodontitis. The total bacterial load, pathogenic bacteria belonging to "red" and "orange" complexes and Aggregatibacter actinomycetemcomitans were determined by Real-Time PCR in 1216 patients. Data were analysed by looking for relationships between bacteriological parameters, age and periodontal probing depth. The obtained results showed a significant higher number of red complex bacteria in older rather than in younger patients. The total number of bacteria and the presence of A. actinomycetemcomitans did not clearly associate with an age group.
Related Concept Videos
Development of the Oral Microbiota
Development of Human Microbiota
The Oral Microbiota
Colonisation of Pathogens
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
