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Related Experiment Video

Updated: Jun 1, 2026

Purification of a High Molecular Mass Protein in Streptococcus mutans
09:51

Purification of a High Molecular Mass Protein in Streptococcus mutans

Published on: September 14, 2019

Hydrophobicity test in mutans streptococci.

Perla Hermida Lucena1, Luciana Biondi, Ramón de Torres

  • 1Department of Microbiology, School of Dentistry, National University of Rosario, Argentina. phermida@fodonto.unr.edu.ar

Acta Odontologica Latinoamericana : AOL
|June 7, 2011
PubMed
Summary

Patients with high dental caries risk show a greater prevalence of hydrophobic bacteria, specifically Streptococcus species. This finding suggests a link between bacterial hydrophobicity and increased susceptibility to cavities.

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Acta odontologica latinoamericana : AOL·2007
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Area of Science:

  • Oral microbiology
  • Dental public health
  • Biochemistry

Background:

  • Streptococcus mutans and Streptococcus sobrinus are key etiological agents of dental caries.
  • Bacterial cell surface properties, such as hydrophobicity, can influence adhesion and colonization, impacting virulence.

Purpose of the Study:

  • To investigate the relationship between bacterial hydrophobicity and dental caries risk in young patients.
  • To determine if specific Streptococcus species exhibit differential hydrophobicity based on caries risk.

Main Methods:

  • Kinetic hydrophobic measurements using hexadecane were performed on mutans streptococci isolated from patients.
  • Patients were categorized into high (dmft + DMFT > 5) and low (dmft + DMFT < 3) dental caries risk groups.
  • Bacterial identification was confirmed using De La Higuera's procedure and API strips.

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Published on: March 31, 2021

Generation of a Gene-disrupted Streptococcus mutans Strain Without Gene Cloning
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Generation of a Gene-disrupted Streptococcus mutans Strain Without Gene Cloning

Published on: October 23, 2017

Related Experiment Videos

Last Updated: Jun 1, 2026

Purification of a High Molecular Mass Protein in Streptococcus mutans
09:51

Purification of a High Molecular Mass Protein in Streptococcus mutans

Published on: September 14, 2019

Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries
08:20

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

Published on: March 31, 2021

Generation of a Gene-disrupted Streptococcus mutans Strain Without Gene Cloning
12:06

Generation of a Gene-disrupted Streptococcus mutans Strain Without Gene Cloning

Published on: October 23, 2017

Main Results:

  • A significantly higher prevalence of hydrophobic bacteria was observed in patients with high dental caries risk compared to those with low risk (p = 0.0003).
  • While both groups harbored Streptococcus mutans, Streptococcus sobrinus, and Streptococcus rattus, the proportion of hydrophobic strains varied.
  • All identified Streptococcus rattus strains were hydrophobic.

Conclusions:

  • Bacterial hydrophobicity is more prevalent in individuals with a high risk of developing dental caries.
  • These findings suggest that hydrophobic properties of oral streptococci may contribute to increased caries susceptibility.
  • Further research into targeting bacterial hydrophobicity could offer novel strategies for caries prevention.