Generalized Dentin Dysplasia in a Four-Year-old dog.

Area of Science:

• Veterinary Dentistry
• Genetics
• Oral Pathology

Background:

• Dentin dysplasia is an autosomal-dominant genetic disorder in humans, characterized by radiographic dental anomalies and tooth discoloration due to defective secondary dentinogenesis.
• It presents with variable clinical manifestations, impacting tooth structure and appearance.

Observation:

• This report details a canine case exhibiting distinct radiographic and histopathologic dental abnormalities.
• The observed abnormalities share similarities with human generalized dentin dysplasia but are not entirely analogous to any specific human subtype.

Findings:

• Gross examination revealed significant discoloration in most teeth.
• Histopathologic analysis confirmed abnormalities consistent with generalized dentin dysplasia.
• Crucially, the majority of the affected teeth were found to be vital despite discoloration.

Implications:

• Dentin dysplasia should be considered in the differential diagnosis for discolored teeth in dogs.
• This finding underscores that tooth discoloration associated with dentin dysplasia does not invariably indicate pulp necrosis or loss of vitality.
• It emphasizes the importance of vitality testing in cases of discolored teeth in veterinary patients.