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Related Experiment Videos

Antimicrobial activity produced by six dentifrices

L Settembrini1, J Gultz, R Boylan

  • 1Division of Restorative and Prosthodontic Science, New York University College of Dentistry, NY 10010-4086, USA.

General Dentistry
|August 7, 1998
PubMed
Summary
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Six commercial toothpastes showed antimicrobial effects against common oral bacteria like Streptococcus mutans. This study evaluated their effectiveness in inhibiting bacterial growth on agar plates.

Area of Science:

  • Microbiology
  • Dental Science
  • Antimicrobial Agents

Background:

  • Oral bacteria, including Streptococcus mutans, Streptococcus sanguis, and Actinomyces viscosus, are key contributors to dental caries and other oral health issues.
  • Commercial dentifrices are widely used for oral hygiene, and their antimicrobial properties are crucial for preventing oral diseases.

Purpose of the Study:

  • To assess the in vitro antimicrobial activity of six commercially available dentifrices against prevalent oral bacteria.
  • To compare the efficacy of different dentifrices in inhibiting the growth of Streptococcus mutans, Streptococcus sanguis, and Actinomyces viscosus.

Main Methods:

  • A disc diffusion assay was employed using sterile discs impregnated with six commercial dentifrices and control solutions.
  • Agar plates were inoculated with Streptococcus mutans, Streptococcus sanguis, and Actinomyces viscosus.

Related Experiment Videos

  • Zones of microbial inhibition around the discs were measured in millimeters after a 48-hour incubation period.

    • Main Results:

    • All six tested dentifrices exhibited measurable antimicrobial activity against the selected oral bacteria.
    • Significant zones of inhibition were observed for the dentifrices against Streptococcus mutans, Streptococcus sanguis, and Actinomyces viscosus.

    Conclusions:

    • Commercially available dentifrices possess significant antimicrobial properties effective against common oral pathogens.
    • The findings support the role of these dentifrices in controlling the proliferation of bacteria associated with oral health conditions.