Gingivitis in the deciduous and permanent dentition. An experimental study in the dog

Area of Science:

• Veterinary Dentistry
• Periodontology
• Comparative Pathology

Background:

• Gingival health and inflammation are crucial in both deciduous and permanent dentition.
• Understanding the canine gingival response to plaque accumulation provides insights into periodontal disease mechanisms.

Purpose of the Study:

• To investigate the gingival reaction in dogs' deciduous and permanent teeth following 3 weeks of plaque accumulation.
• To compare the inflammatory cell infiltrate (ICT) in response to plaque in different dentitions.

Main Methods:

• A study involving 10 beagle dogs divided into two groups.
• Initiation of plaque control, followed by periods of plaque accumulation (3 weeks).
• Clinical examinations, bacterial plaque sampling, and histometric/morphometric analysis of gingival biopsies.

Main Results:

• Meticulous plaque control established clinically healthy gingiva, though a small inflammatory cell infiltrate (ICT) was present.
• Three weeks of plaque accumulation induced clinical gingivitis and larger ICT in both deciduous and permanent dentitions.
• Inflammatory lesions differed in location and composition, with permanent dentition showing more plasma cells in the ICT.

Conclusions:

• Clinically healthy canine gingiva harbors a low-level inflammatory infiltrate.
• Plaque accumulation rapidly leads to gingivitis with distinct inflammatory responses in deciduous and permanent teeth.
• Differences in inflammatory lesion characteristics suggest varying susceptibility or response patterns between dentitions.