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Related Experiment Video

Updated: Jul 2, 2026

Robust Ligature-Induced Model of Murine Periodontitis for the Evaluation of Oral Neutrophils
07:15

Robust Ligature-Induced Model of Murine Periodontitis for the Evaluation of Oral Neutrophils

Published on: January 21, 2020

An optimized method for establishing experimental rat periodontitis using "double-ligature" technique.

Cheng Hu1, Haixia Wang2, Yuwei Liao1

  • 1Hospital of Stomatology & Guangdong Provincial Key Laboratory of Stomatology & Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.

Methods (San Diego, Calif.)
|February 5, 2026
PubMed
Summary
This summary is machine-generated.

A new double-ligature technique using silk sutures and orthodontic wires effectively models periodontitis in rats. This reliable method overcomes limitations of traditional silk ligatures for studying disease progression and testing therapies.

Keywords:
Alveolar bone lossAnimal modelBone regenerationPeriodontitisRats

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Area of Science:

  • Periodontology
  • Animal Modeling
  • Biomaterials Science

Background:

  • Establishing reliable animal models for experimental periodontitis is crucial for advancing research.
  • Conventional silk ligation methods have limitations, primarily silk thread detachment, hindering study reproducibility.

Purpose of the Study:

  • To develop and validate a novel, stable rat model for experimental periodontitis.
  • To overcome the limitations of traditional silk ligation techniques.
  • To provide a foundation for translational periodontitis research and biomaterial testing.

Main Methods:

  • A "double-ligature" technique combining silk sutures and orthodontic wires was employed in rats.
  • A high-sugar diet was used as an adjunct to enhance periodontitis induction.
  • Thirty rats were divided into five groups: control, wire-only, silk-only, wire+silk, and wire+silk+sugar.

Main Results:

  • The wire+silk+sugar group exhibited significantly elevated clinical indices (bleeding, probing depth, plaque) and severe alveolar bone resorption.
  • Molecular analysis showed upregulated inflammatory gene expression (TNF-α, IL-1β) in double-ligature groups.
  • Histology confirmed immune infiltration and periodontal ligament disruption, with increased osteoclast activity.

Conclusions:

  • The novel double-ligature technique provides a stable and reproducible rat model for periodontitis.
  • This model effectively mimics key aspects of human periodontitis, including bone loss and inflammation.
  • The method is suitable for studying periodontitis pathogenesis and evaluating therapeutic biomaterials for alveolar bone defects.