Age estimation from mandibles in Malay: A 2D geometric morphometric analysis
Objectives: In this study, the sizes and forms of mandibles in various age groups of the Malay population were measured and compared. Methods: Geometric morphometric (GM) analysis of mandibles from 400 dental panoramic tomography (DPT) specimens was conducted. The MorphoJ program was used to perform...
Published in: | Journal of Taibah University Medical Sciences |
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Elsevier B.V.
2023
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2-s2.0-85162854795 Zulkifli N.A.F.; Mohd Saaid N.A.S.; Alias A.; Mohamed Ibrahim N.; Woon C.K.; Kurniawan A.; Prakoeswa B.F.W.R. Age estimation from mandibles in Malay: A 2D geometric morphometric analysis 2023 Journal of Taibah University Medical Sciences 18 6 10.1016/j.jtumed.2023.05.020 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162854795&doi=10.1016%2fj.jtumed.2023.05.020&partnerID=40&md5=819a419a81bd1142d0cba90110d4c843 Objectives: In this study, the sizes and forms of mandibles in various age groups of the Malay population were measured and compared. Methods: Geometric morphometric (GM) analysis of mandibles from 400 dental panoramic tomography (DPT) specimens was conducted. The MorphoJ program was used to perform generalized Procrustes analysis (GPA), Procrustes ANOVA, principal component analysis (PCA), discriminant function analysis (DFA), and canonical variate analysis (CVA). In the tpsDig2 program, the 27 landmarks were applied to the DPT radiographs. Variations in mandibular size and form were categorized into four age groups: group 1 (15–24 years), group 2 (25–34 years), group 3 (35–44 years), and group 4 (45–54 years). Results: The diversity in mandibular shape among the first eight principal components was 81%. Procrustes ANOVA revealed significant shape differences (P < 0.001) among age groups. Mahalanobis distances indicated substantial differences among all age groups; group 1 and group 4 scored highest, at 2.114. The ranges for the cross-validation and discriminant function tests were 90–72% and 81–49%, respectively. Conclusion: GM analysis through radiography is a simple, non-invasive, and non-destructive method of estimating age by using the mandible. GM analysis is unique because it can visualize the changes in mandible shape among age groups. This method should aid in age identification in forensic odontology investigations. © 2023 The Authors Elsevier B.V. 16583612 English Article All Open Access; Gold Open Access |
author |
Zulkifli N.A.F.; Mohd Saaid N.A.S.; Alias A.; Mohamed Ibrahim N.; Woon C.K.; Kurniawan A.; Prakoeswa B.F.W.R. |
spellingShingle |
Zulkifli N.A.F.; Mohd Saaid N.A.S.; Alias A.; Mohamed Ibrahim N.; Woon C.K.; Kurniawan A.; Prakoeswa B.F.W.R. Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
author_facet |
Zulkifli N.A.F.; Mohd Saaid N.A.S.; Alias A.; Mohamed Ibrahim N.; Woon C.K.; Kurniawan A.; Prakoeswa B.F.W.R. |
author_sort |
Zulkifli N.A.F.; Mohd Saaid N.A.S.; Alias A.; Mohamed Ibrahim N.; Woon C.K.; Kurniawan A.; Prakoeswa B.F.W.R. |
title |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
title_short |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
title_full |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
title_fullStr |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
title_full_unstemmed |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
title_sort |
Age estimation from mandibles in Malay: A 2D geometric morphometric analysis |
publishDate |
2023 |
container_title |
Journal of Taibah University Medical Sciences |
container_volume |
18 |
container_issue |
6 |
doi_str_mv |
10.1016/j.jtumed.2023.05.020 |
url |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162854795&doi=10.1016%2fj.jtumed.2023.05.020&partnerID=40&md5=819a419a81bd1142d0cba90110d4c843 |
description |
Objectives: In this study, the sizes and forms of mandibles in various age groups of the Malay population were measured and compared. Methods: Geometric morphometric (GM) analysis of mandibles from 400 dental panoramic tomography (DPT) specimens was conducted. The MorphoJ program was used to perform generalized Procrustes analysis (GPA), Procrustes ANOVA, principal component analysis (PCA), discriminant function analysis (DFA), and canonical variate analysis (CVA). In the tpsDig2 program, the 27 landmarks were applied to the DPT radiographs. Variations in mandibular size and form were categorized into four age groups: group 1 (15–24 years), group 2 (25–34 years), group 3 (35–44 years), and group 4 (45–54 years). Results: The diversity in mandibular shape among the first eight principal components was 81%. Procrustes ANOVA revealed significant shape differences (P < 0.001) among age groups. Mahalanobis distances indicated substantial differences among all age groups; group 1 and group 4 scored highest, at 2.114. The ranges for the cross-validation and discriminant function tests were 90–72% and 81–49%, respectively. Conclusion: GM analysis through radiography is a simple, non-invasive, and non-destructive method of estimating age by using the mandible. GM analysis is unique because it can visualize the changes in mandible shape among age groups. This method should aid in age identification in forensic odontology investigations. © 2023 The Authors |
publisher |
Elsevier B.V. |
issn |
16583612 |
language |
English |
format |
Article |
accesstype |
All Open Access; Gold Open Access |
record_format |
scopus |
collection |
Scopus |
_version_ |
1809678016033325056 |