ArticleAmerican journal of physical anthropology2019
Variation of 3D outer and inner crown morphology in modern human mandibular premolars.
Article in American journal of physical anthropology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.
- Sexual dimorphism in odontometric parameters using cone beam CT: a systematic review.Head & face medicine · 2023Pooled it
- Tooth morphology across patterns of third molar agenesis: a geometric morphometric study in a French orthodontic population.Clinical oral investigations · 2026Article
- 3D geometric morphometric analysis of morphological covariation in the modern human postcanine dentition.Scientific reports · 2026Article
- Shape variation in modern human upper premolars.PloS one · 2024Article
- New Approach to Dental Morphometric Research Based on 3D Imaging Techniques.Journal of imaging · 2021Article
- Morphological variation of the deciduous second molars in the Baka Pygmies.Scientific reports · 2021Article
- Variation of 3D outer and inner crown morphology in modern human mandibular premolars.American journal of physical anthropology · 2019Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 5 countries.
Funding
Abstract
objectivesThis study explores the outer and inner crown of lower third and fourth premolars (P MATERIALS AND
methodsWe studied three-dimensional models of the outer enamel surface and the enamel-dentine junction (EDJ) from μCT datasets of 77 recent humans using both an assessment of seven nonmetric traits and a standard geometric morphometric (GM) analysis. For the latter, the dental crown was represented by four landmarks (dentine horns and fossae), 20 semilandmarks along the EDJ marginal ridge, and pseudolandmarks along the crown and cervical outlines.
resultsCertain discrete traits showed significantly different regional frequencies and sexual dimorphism. The GM analyses of both P
conclusionsDue to marked intragroup and intergroup variation in GM analyses of lower premolars, discrete traits such as the number of lingual cusps and mesiolingual groove expression provide better geographic separation of modern human populations. The greater variability of the lingual region suggests a dominance of functional constraints over geographic provenience or sex. Additional information about functionally relevant aspects of the crown surface and odontogenetic data are needed to unravel the factors underlying dental morphology in modern humans.
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Registered trials
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