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Related Experiment Videos

A method for studying adherence of oral streptococci to solid surfaces

J Olsson, B Krasse

    Scandinavian Journal of Dental Research
    |January 1, 1976
    PubMed
    Summary

    Different streptococci attach to surfaces with varying strengths. Fluoride reduced adherence, while sucrose increased it, demonstrating a novel method for studying oral microbial adhesion.

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    Area of Science:

    • Oral microbiology
    • Dental research
    • Microbial adhesion

    Background:

    • Understanding streptococcal adherence to oral surfaces is crucial for dental health.
    • Different species of streptococci exhibit varying adhesion properties.
    • Standardized methods are needed to quantify microbial attachment and detachment.

    Purpose of the Study:

    • To investigate the adherence of various streptococci to different surfaces (glass, enamel, dentin).
    • To compare in vivo and in vitro methods for studying microbial adhesion.
    • To assess the impact of fluoride and sucrose on streptococcal adherence.

    Main Methods:

    • Studying streptococcal adherence to glass, human enamel, and whale dentin.
    • Utilizing in vivo (intraoral) and in vitro (saliva/bacterial suspensions) experimental setups.
    • Employing a standardized washing technique to selectively desorb microorganisms and quantify their attachment strength.

    Main Results:

    • In vivo and in vitro results showed similar principles of streptococcal adherence.
    • Initial washing reflected salivary proportions, but vigorous washing altered species ratios (e.g., increased S. sanguis, decreased S. salivarius).
    • Fluoride treatment decreased streptococcal removal, while sucrose addition increased it, validating the method's applicability.

    Conclusions:

    • Microbial adhesion strength varies among different streptococcal species.
    • The standardized washing technique effectively differentiates attachment strengths and assesses factors influencing adhesion.
    • This method provides a valuable tool for evaluating anti-adhesion strategies in dental research.

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