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Bacterial Signaling

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...

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Updated: Jan 6, 2026

Oral Biofilm Formation on Different Materials for Dental Implants

Oral Biofilm Formation on Different Materials for Dental Implants

Published on: June 24, 2018

Does subgingival bacterial colonization differ between implants and teeth? A systematic review.

Belén Retamal-Valdes¹, Marcio de Carvalho Formiga¹, Mariana Linhares Almeida¹

¹Universidade de Guarulhos - UNG, Dental Research Division, Department of Periodontology and Oral Implantology, Guarulhos, SP, Brazil.

Brazilian Oral Research

|October 3, 2019

Summary

This summary is machine-generated.

This systematic review found no significant microbial differences between healthy teeth and implants, or those with periodontitis and peri-implantitis. Current evidence is insufficient to support distinct oral microbiota for teeth versus implants.

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Oral Biofilm Sampling for Microbiome Analysis in Healthy Children

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children

Published on: December 31, 2017

Area of Science:

Oral microbiology
Periodontology
Implant dentistry

Background:

Understanding the oral microbiota associated with teeth and dental implants is crucial for diagnosing and treating conditions like periodontitis and peri-implantitis.
Previous research has explored microbial differences, but a comprehensive evaluation of the current evidence is needed.

Purpose of the Study:

To systematically review and assess the weight of evidence for specific microbial differences between healthy teeth and implants.
To evaluate microbial differences in teeth with periodontitis versus implants with peri-implantitis.

Main Methods:

A systematic review adhering to the PRISMA statement was conducted.
Searched MEDLINE, EMBASE, and Cochrane databases up to February 2018 for comparative microbiological studies.
Included studies comparing biofilm samples from healthy teeth/implants or diseased teeth/implants.

Main Results:

Eight studies were included out of 132 identified articles.
A variety of microorganisms were found in different conditions.
No specific microorganisms demonstrated strong, moderate, or mild/some evidence of association with either teeth or implants.

Conclusions:

There is insufficient scientific evidence to support distinct microbial communities colonizing teeth compared to dental implants.
Further research is required to elucidate potential specific differences in oral microbiota between teeth and implants in health and disease states.