Evidence map›Paper›PMID 34389746›Full record

ArticleScientific reports2021

Morphological variation of the deciduous second molars in the Baka Pygmies.

Petra G Šimková, Gerhard W Weber, Fernando V Ramirez Rozzi, Lotfi Slimani, Jérémy Sadoine, Cinzia Fornai

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

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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

3 citing papers in PubMed.

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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

6 authors.

Petra G ŠimkováDepartment of Evolutionary Anthropology, University of Vienna, Vienna, Austria. petra.simkova@univie.ac.at.
Gerhard W WeberDepartment of Evolutionary Anthropology, University of Vienna, Vienna, Austria.
Fernando V Ramirez RozziUMR7206 Ecoanthropologie, MNHN, CNRS, UP, Musée de L'Homme, Paris, France.
Lotfi SlimaniUR2496 - Plateforme Imageries du Vivant, Université de Paris, Montrouge, France.
Jérémy SadoineUR2496 - Plateforme Imageries du Vivant, Université de Paris, Montrouge, France.
Cinzia FornaiDepartment of Evolutionary Anthropology, University of Vienna, Vienna, Austria. cinzia.fornai@univie.ac.at.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Baka Pygmies are known for their short stature resulting from a reduced growth rate during infancy. They are peculiar also for their teeth erupt earlier than in any other African population, and their posterior dentition is larger than in non-Pygmy populations. However, the Baka's dental morphology, like several other aspects of their biology, is still understudied. Here, we explore the variation of the Baka's deciduous upper and lower second molars (dm2s) in comparison to a geographically heterogeneous human sample by means of 3D geometric morphometrics and analysis of dental traits. Our results show that the different populations largely overlap based on the shape of their dm2s, especially the lower ones. Their distal region and the height of the dentinal crown differ the most, with the Baka showing the most extreme range of variation. Upper and lower dm2s covary to a great extent (RV = 0.82). The Baka's and South Americans' dm2s were confirmed among the largest in our sample. Despite the Baka's unique growth pattern, long-lasting isolation, and extreme dental variation, it is not possible to distinguish them from other populations based on their dm2s' morphology only.

Indexed as

Anatomic VariationBlack PeopleFemaleHumansInfantMaleMolarTooth, Deciduous

Identifiers

PMID34389746
PMCPMC8363745

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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.