Evidence map›Paper›PMID 31711475›Full record

ArticleBMC oral health2019

Age estimation in three distinct east Asian population groups using southern Han Chinese dental reference dataset.

Jayakumar Jayaraman, Hai Ming Wong, Graham J Roberts, Nigel M King, Hugo F V Cardoso, Pavethynath Velusamy, Ronaldo G Vergara, Keni-Ichi Yanagita, Teekayu P Jorns

Abstract read
In one paragraph

Article in BMC oral health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed, 1 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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

1 citing paper in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
4 · The record

Corrections and comments

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

9 authors.

Jayakumar JayaramanDepartment of Developmental Dentistry, University of Texas Health School of Dentistry, Texas, USA.
Hai Ming WongPaediatric Dentistry & Orthodontics, Faculty of Dentistry, The University of Hong Kong, 2/F Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong, Hong Kong. wonghmg@hku.hk.ORCID 0000-0003-3411-6442
Graham J RobertsDepartment of Orthodontics, King's College London Dental Institute, London, UK.
Nigel M KingOral Development and Behavioural Sciences, Faculty of Health and Medical Sciences, University of Western Australia, Nedlands, Australia.
Hugo F V CardosoDepartment of Archaeology, Simon Fraser University, Burnaby, BC, Canada.
Pavethynath VelusamyDepartment of Orthodontic Science, Tokyo Medical and Dental University, Tokyo, Japan.
Ronaldo G VergaraSection of Orthodontics, Graduate School of Dentistry, University of the East, Manila, Philippines.
Keni-Ichi YanagitaDepartment of Pediatric Dentistry, Kyushu University, Fukuoka, Japan.
Teekayu P JornsOrofacial Pain Unit, Department of Oral Biology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDental age estimation can assist in the identification of victims following natural disasters and it can also help to solve birth date disputes in individuals involved in criminal activities. A reference dataset (RDS) has been developed from the dental development of 2306 subjects of southern Han Chinese origin and subsequently validated. This study aimed to test the applicability of the southern Han Chinese dental maturation RDS on three distinct East Asian population groups.

methodsA total of 953 dental panoramic radiographs of subjects aged 2 to 24 years were obtained from Philippines, Thailand and Japan. The staging of dental development was conducted according to Anglo-Canadian classification system. The dental age (DA) was calculated using six methods; one un-weighted average and five weighted average (n-tds, sd-tds, se-tds, 1/sd-tds, 1/se-tds) methods based on the scores of the southern Han Chinese RDS. Statistical significance was set at p < 0.05 and the variation between chronological age (CA) and DA was evaluated using paired t-test and Bland & Altman scatter plots.

resultsFrom six dental age calculations, all methods of DA accurately estimated the age of Japanese and few methods in Filipino subjects (n-tds, 1/sd-tds, 1/se-tds). There was consistent overestimation of age for all the methods for Thai females (p < 0.05).

conclusionsThe southern Han Chinese dental reference dataset was shown to be most accurate for Japanese, followed by Thai males and it was particularly ineffective for Filipinos and Thai females.

Indexed as

Age Determination by TeethAsian PeopleAdolescentAdultChildChild, PreschoolChinaFemaleHumansJapanMalePhilippinesReference ValuesThailandYoung AdultAge estimationDental ageJapanPhilippinesSouthern ChineseThailand

Identifiers

PMID31711475
PMCPMC6849234

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