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Updated: Jun 5, 2025

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children

Published on: December 31, 2017

Streptococci Biotypes in Primary and Permanent Caries: A Case-Control Study.

Sonia B Bhardwaj¹, Urvashi Sharma², Manjula Mehta¹

¹Department of Microbiology, Dr Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India.

International Journal of Clinical Pediatric Dentistry

|December 12, 2024

Summary

Dental caries in children and adolescents is linked to specific streptococci species. Mutans streptococci levels were higher in primary teeth caries, with distinct species profiles in primary versus permanent teeth.

Keywords:

Caries Oral streptococci Permanent teeth Primary teeth

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Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries

Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries

Published on: March 31, 2021

Area of Science:

Microbiology
Pediatric Dentistry
Oral Health

Background:

Streptococci, particularly mutans streptococci, are primary agents of dental caries.
Limited data exists on streptococci distribution across different dentition stages and their tooth-level impact.

Purpose of the Study:

To evaluate the distribution of streptococci species in primary and permanent teeth of children and adolescents with caries.
To compare streptococci profiles between primary and permanent dentition caries.

Main Methods:

Case-control study involving children (2-5 years) with primary teeth caries and adolescents (12-15 years) with permanent teeth caries.
Inclusion of age-matched healthy controls.
Dental biofilm sampling, streptococci culturing, colony counting, and species identification.

Main Results:

Identified streptococci species included *S. mutans*, *S. sobrinus*, *S. mitis*, *S. rattus*, *S. sanguis* in primary teeth caries.
*S. salivarius*, *E. faecalis*, *S. mitis*, *S. agnosus*, *S. mutans*, and *S. sobrinus* were found in permanent teeth caries.
Mutans streptococci levels were significantly higher in primary caries group (p < 0.01).

Conclusions:

A significant difference in streptococci species profiles exists between primary and permanent teeth affected by caries (p < 0.01).