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Age estimation in young dogs by radiographic assessment of the canine pulp cavity/tooth width ratio

Martine Van Den Broeck (UGent) , Emmelie Stock (UGent) , Yoni Vermeiren, Leen Verhaert (UGent) , Luc Duchateau (UGent) and Pieter Cornillie (UGent)
(2022) ANATOMIA HISTOLOGIA EMBRYOLOGIA. 51(2). p.269-279
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Abstract
Age estimation in adult dogs can be performed by the radiographic measurement of the tooth pulp cavity, but the technique has hardly been described. In this study, the application of measuring pulp/tooth width ratios (P/T ratios) of the maxillary canine teeth was investigated. Pulp and tooth widths were measured at two locations on 166 maxillary canine teeth of the heads of 84 dog cadavers, using digital extraoral lateral oblique open mouth radiographs. The dogs belonged to different breeds and sexes and had a known age between 194 and 1907 days (approximately 6 months - 5 years). Both at the cemento-enamel junction (CE) and the half-height of the tooth, a comparable non-linear regression with age was demonstrated. Measuring at the CE location was less hindered by wear or superimposition. No statistically significant difference according to sex and breed size and no clinically significant difference according to skull type was found. The highest predictable capacity was found in the youngest dogs until the age of 448 days, of which 84.4% of the canine teeth had a P/T ratio above 0.39. Our results demonstrate that measuring P/T ratios of canine teeth can be used in practice to assign dogs to age categories, with the highest accuracy in young adult dogs.
Keywords
COMPUTED-TOMOGRAPHY, PULP/TOOTH RATIO, TOOTH, TEETH, VOLUME, RELIABILITY, MARTENS, GROWTH, DENTIN, ADULTS, age estimation, dog, pulp cavity, pulp, tooth ratio, radiograph

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MLA
Van Den Broeck, Martine, et al. “Age Estimation in Young Dogs by Radiographic Assessment of the Canine Pulp Cavity/Tooth Width Ratio.” ANATOMIA HISTOLOGIA EMBRYOLOGIA, vol. 51, no. 2, 2022, pp. 269–79, doi:10.1111/ahe.12787.
APA
Van Den Broeck, M., Stock, E., Vermeiren, Y., Verhaert, L., Duchateau, L., & Cornillie, P. (2022). Age estimation in young dogs by radiographic assessment of the canine pulp cavity/tooth width ratio. ANATOMIA HISTOLOGIA EMBRYOLOGIA, 51(2), 269–279. https://doi.org/10.1111/ahe.12787
Chicago author-date
Van Den Broeck, Martine, Emmelie Stock, Yoni Vermeiren, Leen Verhaert, Luc Duchateau, and Pieter Cornillie. 2022. “Age Estimation in Young Dogs by Radiographic Assessment of the Canine Pulp Cavity/Tooth Width Ratio.” ANATOMIA HISTOLOGIA EMBRYOLOGIA 51 (2): 269–79. https://doi.org/10.1111/ahe.12787.
Chicago author-date (all authors)
Van Den Broeck, Martine, Emmelie Stock, Yoni Vermeiren, Leen Verhaert, Luc Duchateau, and Pieter Cornillie. 2022. “Age Estimation in Young Dogs by Radiographic Assessment of the Canine Pulp Cavity/Tooth Width Ratio.” ANATOMIA HISTOLOGIA EMBRYOLOGIA 51 (2): 269–279. doi:10.1111/ahe.12787.
Vancouver
1.
Van Den Broeck M, Stock E, Vermeiren Y, Verhaert L, Duchateau L, Cornillie P. Age estimation in young dogs by radiographic assessment of the canine pulp cavity/tooth width ratio. ANATOMIA HISTOLOGIA EMBRYOLOGIA. 2022;51(2):269–79.
IEEE
[1]
M. Van Den Broeck, E. Stock, Y. Vermeiren, L. Verhaert, L. Duchateau, and P. Cornillie, “Age estimation in young dogs by radiographic assessment of the canine pulp cavity/tooth width ratio,” ANATOMIA HISTOLOGIA EMBRYOLOGIA, vol. 51, no. 2, pp. 269–279, 2022.
@article{8740182,
  abstract     = {{Age estimation in adult dogs can be performed by the radiographic measurement of the tooth pulp cavity, but the technique has hardly been described. In this study, the application of measuring pulp/tooth width ratios (P/T ratios) of the maxillary canine teeth was investigated. Pulp and tooth widths were measured at two locations on 166 maxillary canine teeth of the heads of 84 dog cadavers, using digital extraoral lateral oblique open mouth radiographs. The dogs belonged to different breeds and sexes and had a known age between 194 and 1907 days (approximately 6 months - 5 years). Both at the cemento-enamel junction (CE) and the half-height of the tooth, a comparable non-linear regression with age was demonstrated. Measuring at the CE location was less hindered by wear or superimposition. No statistically significant difference according to sex and breed size and no clinically significant difference according to skull type was found. The highest predictable capacity was found in the youngest dogs until the age of 448 days, of which 84.4% of the canine teeth had a P/T ratio above 0.39. Our results demonstrate that measuring P/T ratios of canine teeth can be used in practice to assign dogs to age categories, with the highest accuracy in young adult dogs.}},
  author       = {{Van Den Broeck, Martine and Stock, Emmelie and Vermeiren, Yoni and Verhaert, Leen and Duchateau, Luc and Cornillie, Pieter}},
  issn         = {{0340-2096}},
  journal      = {{ANATOMIA HISTOLOGIA EMBRYOLOGIA}},
  keywords     = {{COMPUTED-TOMOGRAPHY,PULP/TOOTH RATIO,TOOTH,TEETH,VOLUME,RELIABILITY,MARTENS,GROWTH,DENTIN,ADULTS,age estimation,dog,pulp cavity,pulp,tooth ratio,radiograph}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{269--279}},
  title        = {{Age estimation in young dogs by radiographic assessment of the canine pulp cavity/tooth width ratio}},
  url          = {{http://doi.org/10.1111/ahe.12787}},
  volume       = {{51}},
  year         = {{2022}},
}
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