Identification of the living and the dead individual is essential in routine forensic dental examinations. Age determination can be of great value in forensic odontology, not only in identifying bodies but also in relation to crime. When subjects have extensive changes that external features provide no information, teeth are often the only means of identification. Several procedures for age-at-death estimation in adults have been introduced. Two of them, cementum annulation and dentin translucency, are frequently used as a single dental indicator. Cementum annulation refers to an alternating dark and light band; each pair of it represents 1 year. Meanwhile, dentin translucency is the other dental physiological process that begins in the second or third decade of life and progresses with age. There are still few studies that compared both methods and their accuracy in estimating adult age at death. Therefore, this study aims to test and compare cementum annulation and dentin translucency accuracy by performing a systematic search on five online databases (Pubmed, Scopus, Ebsco, ScienceDirect, and Wiley). All the research articles must be published in the last 10 years, and the full paper must be available in English. Out of the total 1178 literature, 28 studies were recruited for qualitative analysis and 23 studies for meta-analysis. The results show that dentin translucency age estimation is more accurate than the cementum annulation method in the entire population. It is recommended to use the cementum annulation method for younger adults (15-44 years) and the dentin translucency method for the older ones (≥ 45 years).
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s00414-022-02777-2 | DOI Listing |
Int J Legal Med
October 2024
Faculty of Science and Engineering, Pharmaceutical Analysis, University of Groningen, Groningen Research Institute of Pharmacy, Groningen, The Netherlands.
Introduction: Analysis of a single tooth and nail can provide valuable forensic information, including year of birth, year of death, age, sex, DNA-profile, geographic residence during childhood and at time of death and drug exposure. The aim is to minimize the amount of used bodily material and to validate the applicability of a multidisciplinary sampling protocol.
Methods: A nail of the big toe, a tooth and blood of seven deceased individuals were collected postmortem.
J Anat
January 2025
Centre for Saami Studies, UiT the Arctic University of Norway, Tromsø, Norway.
Counting growth layers in dentine and/or secondary cementum is widely used for age determination in wild mammals but the underlying seasonal changes in the structure and degree of mineralisation of dental tissue have not been well characterised. We embedded first (m1) and second (m2) mandibular permanent molar teeth from a 12-year-old female Svalbard reindeer (Rangifer tarandus platyrhynchus) in PolyMethylMethAcrylate (PMMA), prepared cut and polished surfaces coated with evaporated carbon and used 20 kV back-scattered electron imaging in a scanning electron microscope (BSE-SEM) to study aspects of dental tissue structure which depend on the degree of mineralisation at the micron and sub-micron scale. BSE-SEM revealed differences between the mineral content of growth layers (annulations) in the secondary cementum and the primary and secondary dentine, the latter, incidentally, still forming at death in m1.
View Article and Find Full Text PDFJ Struct Biol
June 2024
Department of Materials Science and Engineering, McMaster University, Hamilton L8S 4L7, ON, Canada; School of Biomedical Engineering, McMaster University, Hamilton L8S 4L7, ON, Canada. Electronic address:
In humans, the growth pattern of the acellular extrinsic fibre cementum (AEFC) has been useful to estimate the age-at-death. However, the structural organization behind such a pattern remains poorly understood. In this study tooth cementum from seven individuals from a Mexican modern skeletal series were analyzed with the aim of unveiling the AEFC collagenous and mineral structure using multimodal imaging approaches.
View Article and Find Full Text PDFJ Oral Maxillofac Pathol
October 2022
Department of Oral and Maxillofacial Pathology and Oral Microbiology, Sinhgad Dental College and Hospital, Pune, Maharashtra, India.
Context: There has been extensive focus on forensic odontology with an increase in the research for age estimation procedures. Teeth are biological markers for human age estimation. In adults, age estimation with a tooth has to be done by the analysis of cementum annulations, root transparency and determination of aspartic acid racemization.
View Article and Find Full Text PDFInt J Paleopathol
March 2023
Department of Archaeology and Museology, Faculty of Arts, Masaryk University, Arne Nováka 1, 602 00 Brno, Czech Republic. Electronic address:
Objective: To contribute to differential diagnosis of multiple epiphyseal dysplasia (MED) in archeological and clinical contexts.
Materials: A skeleton of a 30- to 45-year-old male (grave no. 806) from the Late Migration Period graveyard in Drnholec-Pod sýpkou (Czech Republic), radio-carbon dated to AD 492-530.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!