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Feline Tooth Resorption

DeLaurier A, Boyde A, Jackson B et al: Identifying early osteoclastic resorptive lesions in feline teeth: a model for understanding the origin of multiple idiopathic root resorption, J Periodontal Res 44:248, 2009.

One of the most common oral lesions in cats is osteoclastic tooth resorption, a destructive lesion that typically results in pain and tooth loss. The underlying cause of this dental lesion in cats is not well understood. The objective of this study was to investigate the origin and progression of early tooth resorption lesions in teeth with no clinical signs of disease. The surfaces of 138 teeth from 13 adult cats were analyzed using electron microscopy. At least one resorptive lesion was found in 53% of the teeth. Most cats (85%) had tooth lesions, and there was a significant association between increasing age and incidence of lesions. The most commonly affected teeth were the mandibular molars. Resorptive lesions were found at the cemento-enamel junction in 38% of teeth. Evidence of repair limited to the root surface was found in 23% of teeth. When lesions occurred at the cemento-enamel junction, there was no evidence of repair. The researchers conclude that resorptive lesions are common in feline teeth, even when no signs of disease are obvious. Lesions can be found anywhere on the tooth surface, but there seems to be absent or compromised repair mechanisms at the cemento-enamel junction. [SL]
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Related articles:
Girard N, Servet E, Biourge V et al: Feline tooth resorption in a colony of 109 cats, J Vet Dent 25:166, 2008.
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Lewis JR, Okuda A, Shofer FS et al: Significant association between tooth extrusion and tooth resorption in domestic cats, J Vet Dent 25:86, 2008.
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