Evidence map›Paper›PMID 31393749›Full record

ArticleJournal of dental research2019

Molar Bud-to-Cap Transition Is Proliferation Independent.

S Yamada, R Lav, J Li, A S Tucker, J B A Green

Open access · hybridAbstract read
In one paragraph

Article in Journal of dental research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.9field-weighted citation impact, top 27% of its field
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

19 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. International journal of molecular sciences · 2025
    Article
  4. Prespecified dental mesenchymal cells for the making of a tooth.International journal of oral science · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Cellular mechanisms of reverse epithelial curvature in tissue morphogenesis.Frontiers in cell and developmental biology · 2022
    Review
  11. Developmental influence on evolutionary rates and the origin of placental mammal tooth complexity.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. An Essential Requirement forFrontiers in cell and developmental biology · 2020
    Article
  18. Action of Actomyosin Contraction WithFrontiers in physiology · 2020
    Article
  19. Pointing on the early stages of maxillary bone and tooth development - histological findings.Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie · 2020
    Article
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

5 authors at 1 institution in 1 country.

S YamadaCentre for Craniofacial Biology and Regeneration, King's College London, London, UK.ORCID 0000-0003-0282-5498
R LavCentre for Craniofacial Biology and Regeneration, King's College London, London, UK.
J LiCentre for Craniofacial Biology and Regeneration, King's College London, London, UK.
A S TuckerCentre for Craniofacial Biology and Regeneration, King's College London, London, UK.
J B A GreenCentre for Craniofacial Biology and Regeneration, King's College London, London, UK.ORCID 0000-0002-6102-2620
King's College London · GB

Funding

Biotechnology and Biological Sciences Research Council BB/P007325/1
6 · The paper itself

Abstract

Tooth germs undergo a series of dynamic morphologic changes through bud, cap, and bell stages, in which odontogenic epithelium continuously extends into the underlying mesenchyme. During the transition from the bud stage to the cap stage, the base of the bud flattens and then bends into a cap shape whose edges are referred to as "cervical loops." Although genetic mechanisms for cap formation have been well described, little is understood about the morphogenetic mechanisms. Computer modeling and cell trajectory tracking have suggested that the epithelial bending is driven purely by differential cell proliferation and adhesion in different parts of the tooth germ. Here, we show that, unexpectedly, inhibition of cell proliferation did not prevent bud-to-cap morphogenesis. We quantified cell shapes and actin and myosin distributions in different parts of the tooth epithelium at the critical stages and found that these are consistent with basal relaxation in the forming cervical loops and basal constriction around enamel knot at the center of the cap. Inhibition of focal adhesion kinase, which is required for basal constriction in other systems, arrested the molar explant morphogenesis at the bud stage. Together, these results show that the bud-to-cap transition is largely proliferation independent, and we propose that it is driven by classic actomyosin-driven cell shape-dependent mechanisms. We discuss how these results can be reconciled with the previous models and data.

Indexed as

Cell ProliferationOdontogenesisAnimalsFemaleGene Expression Regulation, DevelopmentalMesodermMiceMolarMorphogenesisPregnancyTooth Germbasal constrictioncell biologydevelopmental biologymorphogenesismorphometricstooth development

Identifiers

PMID31393749
PMCPMC6761786
OpenAlexW2967057631

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.