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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16734

Title: Dental age estimation in Malay children based on all permanent teeth types
Authors: Yusof, M. Y. P. M.
Thevissen, P. W.
FIEUWS, Steffen
Issue Date: 2014
Abstract: The applicability of the Willems et al. model was verified on a collected sample of Malay (Malaysian nationality) children. This sample was split in a reference sample to develop a Malay-specific prediction model based on the Willems et al. method and in a test sample to validate this new developed model. Next, the incorporation of third molars into this model was analyzed. Panoramic radiographs (n = 1,403) of Malay children aged between 4 and 14.99 years (n = 702) and subadults aged between 15 and 23.99 years (n = 701) were collected. The left mandibular seven permanent teeth of the children were scored based on the staging technique described by Demirjian and converted to age using the Willems et al. method. Third molar development of all individuals was staged based on the technique described by Gleiser and Hunt modified by Kohler. Differences between dental age and chronological age were calculated and expressed in mean error (ME), mean absolute error (MAE), and root mean square error (RMSE). The Willems et al. model verified on the collected Malay children overestimated chronological age with a ME around 0.45 year. Small differences in ME, MAE, and RMSE between the verified Malay-specific prediction model and the Willems et al. model were observed. An overall neglected decrease in RMSE was detected adding third molar stages to the developed permanent teeth model.
Notes: Thevissen, PW (reprint author), Katholieke Univ Leuven Hosp, Dept Dent, Kapucijnenvoer 7, B-3000 Louvain, Belgium. denthepa@telenet.be
URI: http://hdl.handle.net/1942/16734
DOI: 10.1007/s00414-013-0825-8
ISI #: 000332608400019
ISSN: 0937-9827
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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