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Individual age estimation using pulp-to-tooth area ratio in single-rooted teeth

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Pages 82-95 | Received 20 May 2022, Accepted 21 Oct 2023, Published online: 30 Oct 2023
 

Abstract

Dental age estimation can play a crucial role in forensic investigations as it can assist authorities in the identification of living and deceased individuals. Of the various age estimation methods based on odontology, pulp-to-tooth ratios measured through radiography have been a popular choice due to their less invasive nature. Pulp-to-tooth area ratios were assessed in 12 permanent single rooted teeth (maxillary and mandibular, left and right central incisors, lateral incisors, and canines) using clinical cone beam computed tomographs. A total of 227 teeth were analyzed from 66 subjects, 33 males and 33 females. Pulp-to-tooth area ratios were measured in the coronal, sagittal and axial perspectives. Additionally, the difference in pulp-to-tooth area ratio between the entire pulp cavity area of the tooth, and the pulp cavity area exclusively above the cementoenamel junction were compared. Bilateral symmetry was confirmed between the teeth from the right and left side (p = 0.9405). All correlations exceeded 0.6, with the highest correlations observed in maxillary teeth (R=-0.836), the teeth from females (R=-0.830), and central and lateral incisors exclusively (R=-0.802). The standard error of estimates from the linear regression models varied between ±10.11 and 14.98 years. This study confirmed that pulp-to-tooth ratios are a sound technique to estimate age.

RÉSUMÉ

L’estimation d’âge dentaire peut jouer un rôle important dans les enquêtes médicolégales, car elle peut aider les autorités à identifier des individus vivants et décédés. Parmi les maintes méthodes d’estimation d’âge pour la dentition, le ratio de pulpe-à-dent mesuré à partir d’interprétations radiographiques demeure favorable à cause de la technique moins invasive. Le ratio de pulpe-à-dent fut analysé dans 12 dents permanentes à racine unique (incisive centrale et latérale, et la canine, de la maxillaire et mandibulaire et de la droite et gauche). Un total de 227 dents fut analysé parmi 66 sujets, dont 33 hommes et 33 femmes. Le ratio de pulpe-à-dent fut mesuré dans le plan coronal, sagittal et axial. De plus, la différence en ratio de pulpe-à-dent fut comparée entre la pulpe complète de la dent et la pulpe supérieure à la jonction amélo-cémentaire. La symétrie bilatérale fut confirmée entre les dents de la droite et de la gauche (p = 0,9405). Toutes les corrélations ont surpassé 0,6 avec la plus haute corrélation notée dans les dents maxillaires (R=-0,836), les dents des femmes (R=-0,830), et les incisives centrales et latérales uniquement (R=-0,802). L'erreur type d’estimation des modèles de régression linéaire a varié entre ±10,11 et 14,98 années. Cette étude confirme que les ratios de pulpe-à-dent présentent une technique propice à estimer l’âge.

Disclosure statement

No potential conflict of interest was reported by the authors.

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Funding

The author(s) reported there is no funding associated with the work featured in this article.

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