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Microcirculation alterations in experimentally induced gingivitis in dogs.

Masato Matsuo1, Toshimitsu Okudera2, Shun-Suke Takahashi3

  • 1Division of Dental Anatomy, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa, 238-8580, Japan. m.matsuo@kdu.ac.jp.

Anatomical Science International
|February 3, 2016
PubMed
Summary

Gingivitis alters the structure and function of gingival microvasculature, causing twisted, narrower blood vessels and reduced blood flow. This study used microvascular resin casting and laser Doppler flowmetry to observe these changes in beagle dogs.

Keywords:
Blood flowGingivitisMicrocirculationResin castSEM

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Area of Science:

  • Periodontology
  • Microcirculation Research
  • Vascular Biology

Background:

  • Gingival microvascular network morphology and function are crucial for periodontal health.
  • Inflammatory conditions like gingivitis can significantly impact local blood supply.

Purpose of the Study:

  • To morphologically examine the gingival microvascular network using microvascular resin casting (MRC).
  • To investigate the functional effects of inflammatory disease on gingival microcirculation via laser Doppler flowmetry (LDF).

Main Methods:

  • Induction of gingivitis in beagle dogs by placing dental floss around premolars.
  • Morphological analysis using microvascular resin casting (MRC) technique.
  • Functional assessment of gingival blood flow using laser Doppler flowmetry (LDF).

Main Results:

  • Healthy gingival vasculature exhibited regular, hairpin-loop-like networks (20-40 μm diameter).
  • Inflamed gingiva showed twisted, spiral-shaped vasculature with smaller, uneven vessels (8-10 μm diameter).
  • Laser Doppler flowmetry confirmed reduced gingival blood flow in the induced gingivitis group.

Conclusions:

  • Gingivitis induces significant morphological changes in the gingival microvascular network.
  • These structural alterations correlate with functional deficits in gingival microcirculation.
  • The study highlights the detrimental effects of inflammation on periodontal vascular health.