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- Title
Age estimation in Brazilian adults using periapical radiographs.
- Authors
Biazevic, Maria G. H.; Michel-Crosato, Edgard; Azevedo, Alana C. S.; Rocha, Marcos; Cameriere, Roberto
- Abstract
Changes in pulp size due to the deposition of secondary dentin observed on radiographic images represent the best morphometric parameter to estimate age in adults. The objectives of the study were: to assess the precision and accuracy of age estimation using periapical radiographs among Brazilian adults, and to compare a formula to estimate age in this population with the original one (Cameriere et al., 2004). The sample comprised 1,772 periapical radiographs of 443 subjects (219 male, 224 female) that were organized into 12 groups according to sex and age (20-29, 30-39, 40-49, 50-59, 60-69 and 70+ years). The x-rays were analyzed as per Cameriere et al. (2004) using Adobe Photoshop® software and the observations were based on 20 points along the contour of the canine structure and 10 points around the pulp cavity. The obtained pixel values were inserted into the formulas for estimating age. The intra-class correlation was of 0.74 (0.6-0.8) and 0.87 (0.7-0.9), respectively, for intra and inter-observer measurements. The application of the age estimation formulas to the Brazilian population revealed a mean error of 8.56 (SD=5.80) years for tooth 13, 7.99 (SD=5.78) years for tooth 23, 8.38 (SD=6.26) years for tooth 33, and 8.20 (SD=6.54) years for tooth 43. The application of the formulas to values obtained with a combination of teeth decreased the mean error and was 7.85 (SD = 5.60) years for the canines on the right side and 7.58 (SD = 5.41) years for the left side. Our findings indicated that slightly higher levels of accuracy could be achieved by estimating the ages using the Brazilian formula compared with the original one. Multiple teeth should be used and more than one method should be applied in order to improve the accuracy of the age estimation. (Funding: CAPES).
- Subjects
TEETH; DENTITION; BRAZILIANS; DENTAL maturity; DENTAL anthropology; RADIOGRAPHS
- Publication
Bulletin of the International Association for Paleodontology, 2014, Vol 8, Issue 1, p86
- ISSN
1846-6273
- Publication type
Article