Evidence map›Paper›PMID 30173300›Full record

ArticleInternational journal of legal medicine2018

Dental age estimation in Somali children using the Willems et al. model.

Mari Metsäniitty, Janna Waltimo-Sirén, Helena Ranta, Steffen Fieuws, Patrick Thevissen

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Article in International journal of legal medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Mari MetsäniittyDepartment of Forensic Medicine, University of Helsinki, P.O. Box 40, Kytösuontie 11, 00014, University of Helsinki, Finland. mari.metsaniitty@helsinki.fi.ORCID http://orcid.org/0000-0001-8437-1607
Janna Waltimo-SirénDepartment of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, P.O. Box 41, Mannerheimintie 172, 00014, University of Helsinki, Finland.
Helena RantaDepartment of Forensic Medicine, University of Helsinki, P.O. Box 40, Kytösuontie 11, 00014, University of Helsinki, Finland.
Steffen FieuwsLeuven Biostatistics and Statistical Bioinformatics Centre (L-BioStat), University of Leuven, Kapucijnenvoer 35, BE-3000, Leuven, Belgium.
Patrick ThevissenDepartment of Imaging and Pathology, Forensic Odontology, KU Leuven Campus Saint- Raphael, Kapucijnenvoer 7, Block A, box 7001, BE-3000, Leuven, Belgium.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe aim of the current study was to retrospectively collect dental panoramic radiographs from Somali children living in Finland, to use the radiographic data to develop a new age estimation model based on the model established by Willems et al. (J Forensic Sci 46(4):893-895, 2001), and to compare the age prediction performances of the Willems et al. model (WM) and the newly developed model. MATERIAL AND

methodsDental panoramic radiographs from 808 healthy Somalis born in Finland were selected. The development of the seven left mandibular permanent teeth, from the central incisor to the second molar, was staged according to Demirjian et al. (Hum Biol 45(2):211-227, 1973). Radiographs with all listed permanent teeth completely developed were excluded. The studied sample consisted of 635 subjects (311 females, 324 males) ranging in age from 4 to 18 years. Kappa and weighted Kappa statistics were used to quantify intra- and inter-observer agreement in stage allocation. The collected dataset was used to validate the WM, constructed on a Belgian Caucasian reference sample, and to establish a Somali-specific age estimation model (SM) based on the WM. Both models were validated and their age prediction performances quantified using mean error (ME), mean absolute error (MAE) and root mean squared error (RMSE).

resultsThe SM resulted in a slight underestimation of age when the sex groups were analysed separately or combined, with ME varying between 0.04 (standard deviation (SD) 1.01) and 0.05 (SD 1.04) years, MAE between 0.77 and 0.80 years and RMSE between 1.01 and 1.04 years. The WM statistically significantly underestimated the age of females, with an ME of 0.20 (SD 1.01) years (p = 0.0006). For males, and for females and males combined, no statistically significant ME was observed.

conclusionThe WM and SM were similar in their age prediction performances, and the use of the WM in dental age assessment in the Somali population is justified.

Indexed as

Radiography, PanoramicAdolescentAge Determination by TeethChildChild, PreschoolDentition, PermanentFemaleFinlandHumansMaleSex CharacteristicsSomaliaAsylum seekerDental developmentForensic age estimationSomaliWillems model

Identifiers

PMID30173300

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.