Members' NAVLE study guide

Feline Dental Disease and Tooth Resorption | NAVLE Guide

1,884 words 7 min read 2 figures Reviewed November 13, 2026

Dental disease is among the most common problems seen in cats, and cats hide mouth pain well. Three conditions matter for the NAVLE: tooth resorption, periodontal disease and chronic gingivostomatitis. Each is treated in a different way, and radiographs usually decide the plan.

Key facts

Dental diseases (including tooth resorption) at a glance
  • Species and system: cat; digestive system (oral cavity and teeth).
  • Tooth resorption: progressive loss of enamel, dentin and cementum by odontoclasts; no cause identified; the lower third premolars (307 and 407) are most often affected.
  • Periodontal disease: plaque-driven gingivitis that can progress to loss of attachment and bone.
  • Gingivostomatitis: severe inflammation of the caudal oral mucosa; painful and often needs extraction.
  • Classic presentation: dropping food, drooling, bad breath, or reluctance to open the mouth; many cats show no signs.
  • Zoonotic or reportable: no.

What's inside

11 sections in the full guide
  1. Key facts
  2. How the NAVLE tests this
  3. Feline dental anatomy and numbering
  4. Tooth resorption
  5. Periodontal disease
  6. Feline chronic gingivostomatitis
  7. Don't confuse these conditions
  8. Prognosis
  9. Quick review
  10. Test yourself
  11. References
The full guide also has 5 tables, 2 figures, 3 self-test questions and 10 references, available to NAVLE members.

Read the full study guide

The full guide is part of every NAVLE plan, with diagnosis and treatment tables, figures, a quick review and self-test questions. Start a free trial to try the question bank, or log in if you are already a member.

Read the free overview article A shorter, free article on Dental diseases (including tooth resorption) on the NavleExam blog.

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