Peer-reviewed veterinary case report
Tooth extrusion linked to tooth resorption in domestic cats
By Lewis, John R et al.·Published in Journal of veterinary dentistry·2008·Matthew J. Ryan Veterinary Hospital of the University of Pennsylvania, United States·View original on PubMed →
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Original publication title: Significant association between tooth extrusion and tooth resorption in domestic cats.
Plain-English summary
A 10-year-old domestic cat was found to have abnormal movement of its upper canine teeth, which can happen in older cats. This condition, known as tooth extrusion, was investigated alongside tooth resorption, a common dental issue in the same age group. The study found that cats with tooth resorption were more likely to have extruded teeth, suggesting a connection between the two problems. The researchers noted that when the distance between certain tooth structures exceeded 2.5 mm, it indicated tooth extrusion. Treatment options were not specified, but recognizing these dental issues is important for managing your cat's oral health.
People also search for: cat tooth resorption symptoms · why is my cat's tooth sticking out · dental care for older cats
Abstract
Abnormal extrusion of canine teeth is often noted in middle-aged and geriatric domestic cats. The same age group of cats also is commonly affected by tooth resorption (TR). This study explored the relationship between these two phenomena of unknown etiology. Using digital radiography, the distance between the alveolar margin (AM) and cementoenamel junction (CEJ), referred to as the AM-CEJ distance, was measured in clinically and radiographically healthy maxillary canine teeth of 24 TR-affected and 29 TR-free cats. The mean AM-CEJ distance of maxillary canine teeth of cats with and cats without TR was 2.68-mm and 2.22-mm, respectively. An analysis of covariance adjusting for age revealed a significant correlation (p = 0.02) between tooth extrusion and TR. Extrusion of the maxillary canine teeth became clinically apparent when an AM-CEJ distance of 2.5-mm or greater was evident in the absence of horizontal or vertical alveolar bone loss. Based on this criterion, 15 of 24 cats with TR (63.0 %) exhibited extrusion of maxillary canine teeth, compared to 9 of 29 cats without TR (31.0 %). Four extruded and five non-extruded maxillary canine teeth were evaluated histologically. Cementum of extruded teeth was significantly thicker compared to that of non-extruded teeth. Four of 4 canine teeth with extrusion (100 %) showed histological evidence of resorption, compared to 1 of 5 canine teeth without extrusion (20.0 %). These results suggest that tooth extrusion is linked to or may be caused by similar factors responsible for the development of TR.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/18751658/