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[A comparative study utilizing different methods for establishing an experimental periodontitis model in rats].

Yafei Wu1, Xiaoqin Zhao, Yu Chen

  • 1Department of Periodontology, West China School of Stomatology, Sichuan University, Chengdu 610041, China.

Sichuan Da Xue Xue Bao. Yi Xue Ban = Journal of Sichuan University. Medical Science Edition
|November 19, 2003
PubMed
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Experimental periodontitis in rats was successfully induced using ligature, high sugar water, and key periodontopathic bacteria. Mixed infections, particularly with P. gingivalis and F. nucleatum, led to the most severe periodontal destruction.

Area of Science:

  • Periodontology
  • Microbiology
  • Animal Models

Background:

  • Periodontitis is a complex oral disease.
  • Animal models are crucial for studying periodontitis pathogenesis.
  • Dietary factors and specific bacteria play significant roles.

Purpose of the Study:

  • To establish a rat model of experimental periodontitis.
  • To evaluate the combined effect of ligature, high sugar intake, and bacterial infection.
  • To assess the impact of specific periodontopathic bacteria (P. gingivalis, F. nucleatum) on disease severity.

Main Methods:

  • Forty Sprague-Dawley rats were divided into control and experimental groups.
  • Experimental groups received ligatures, 10% glucose water, and varying bacterial inoculations (P. gingivalis, P. gingivalis + F. nucleatum).

Related Experiment Videos

  • Microbiological, histological, and stereoscopic alveolar bone loss measurements were performed at 0, 2, and 4 weeks.

    • Main Results:

    • Bacterial colonization was confirmed in inoculated groups.
    • Gingival erosion, alveolar bone loss, and periodontal pockets were observed in experimental groups.
    • Group P3 (P. gingivalis + F. nucleatum) exhibited the most severe periodontal destruction.

    Conclusions:

    • Ligature combined with high sugar water and mixed periodontopathic bacterial infection effectively induces experimental periodontitis in rats.
    • The severity of periodontitis is exacerbated by the presence of both P. gingivalis and F. nucleatum.
    • This model provides a valuable tool for investigating periodontitis mechanisms and potential treatments.