Determining the age of cats by pulp cavity/tooth width ratio using dental radiography
2014
Park, K.S., Seoul National University, Seoul, Republic of Korea | Ahn, J.S., Seoul National University, Seoul, Republic of Korea | Kang, S.M., Seoul National University, Seoul, Republic of Korea | Lee, E.R., Seoul National University, Seoul, Republic of Korea | Kim, S.H., Seoul National University, Seoul, Republic of Korea | Park, S.W., Seoul National University, Seoul, Republic of Korea | Noh, K.W., Seoul National University, Seoul, Republic of Korea | Seo, K.M., Seoul National University, Seoul, Republic of Korea
The purpose of this study was to evaluate the effect of age on the ratio of pulp cavity/tooth width (P/T ratio) in healthy cats. The dental radiographs of 32 cats (16 males and 16 females) were generated with a digital dental X-ray unit with the animals under general anesthesia. Standardized measurement of the canine teeth was performed by drawing a line on the radiograph perpendicular to the cemento- enamel junction (CEJ) of the tooth. There was an inversely proportional correlation between chronological age and the P/T ratio. Moreover, a strong Pearson squared correlation (γ∨2 = 0.92) was identified by the curved regression model. No significant differences in the P/T ratio based on gender or breed were found. These results suggest that determination of age by P/T ratio could be clinically useful for estimating the chronological age of cats.
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