Evidence map›Paper›PMID 27896288›Full record

ArticleMolecular genetics & genomic medicine2016

Ultrastructure of early amelogenesis in wild-type,

Charles E Smith, Yuanyuan Hu, Jan C-C Hu, James P Simmer

Open access · goldAbstract read
In one paragraph

Article in Molecular genetics & genomic medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.8field-weighted citation impact, top 5% 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

39 citing papers in PubMed, 54 citations in OpenAlex.

  1. Citrate Transporter NaCT and Enamel Mineralization: TheInternational journal of molecular sciences · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Functions of secretory calcium-binding phosphoproteins in dental mineralization.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Review
  7. Article
  8. Paleo-evo-devo implications of a revised conceptualization of enameloids and enamels.Biological reviews of the Cambridge Philosophical Society · 2025
    Review
  9. Challenges of Studying Amelogenesis in Gene-Targeted Mouse Models.International journal of molecular sciences · 2025
    Review
  10. Article
  11. Article
  12. Journal of dental research · 2024
    Article
  13. Article
  14. Dentin defects caused by a DsppScientific reports · 2023
    Article
  15. Enamel defects in Acp4Scientific reports · 2022
    Article
  16. Article
  17. Amyloid-like amelogenin nanoribbons template mineralization via a low-energy interface of ion binding sites.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  18. Review
  19. Review
  20. Review
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

4 authors at 2 institutions in 2 countries.

Charles E SmithDepartment of Biologic and Materials SciencesUniversity of Michigan School of Dentistry1210 Eisenhower PlaceAnn ArborMichigan48108; Facility for Electron Microscopy ResearchDepartment of Anatomy and Cell BiologyFaculty of DentistryMcGill UniversityMontrealQuebecH3A 0C7Canada.
Yuanyuan HuDepartment of Biologic and Materials Sciences University of Michigan School of Dentistry 1210 Eisenhower Place Ann Arbor Michigan 48108.
Jan C-C HuDepartment of Biologic and Materials Sciences University of Michigan School of Dentistry 1210 Eisenhower Place Ann Arbor Michigan 48108.
James P SimmerDepartment of Biologic and Materials Sciences University of Michigan School of Dentistry 1210 Eisenhower Place Ann Arbor Michigan 48108.
University of Michigan–Ann Arbor · USMcGill University · CA

Funding

Proteomics and Genetics of Enamel and DentinR01DE015846 · NIDCR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI HU, JAN CHING CHUN · 2004 to 2019
$5.7M
ENAMEL MATRIX SERINE PROTEINASE 1R01DE012769 · NIDCR · UNIVERSITY OF TEXAS HLTH SCI CTR SAN ANT · PI SIMMER, JAMES P · 2000 to 2004
$1.0M
Genetic Mechanisms of Amelogenesis ImperfectaR56DE015846 · NIDCR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI HU, JAN CHING CHUN · 2021 to 2021
$402k
NIDCR NIH HHS R01 DE012769NIDCR NIH HHS R01 DE015846NIDCR NIH HHS R56 DE015846
6 · The paper itself

Abstract

introductionDental enamel is comprised of highly organized, oriented apatite crystals, but how they form is unclear.

methodsWe used focused ion beam (FIB) scanning electron microscopy (SEM) to investigate early enamel formation in 7-week-old incisors from wild-type,

resultsWe demonstrate that wild-type enamel ribbons initiate on dentin mineral on the sides and tips of mineralized collagen fibers, and extend in clusters from dentin to the ameloblast membrane. The clustering suggested that groups of enamel ribbons were initiated and then extended by finger-like membrane processes as they retracted back into the ameloblast distal membrane. These findings support the conclusions that no organic nucleator is necessary for enamel ribbon initiation (although no ribbons form in the

conclusionAmelogenin does not directly nucleate, shape, or orient enamel ribbons, but separates and supports the enamel ribbons, and expands the enamel matrix to accommodate continued ribbon elongation, retrograde ameloblast movement, and rod/interrod organization.

Indexed as

Ameloblastamelogenesis imperfectaamelogeninenamelinfocused ion beam microscopy

Identifiers

PMID27896288
PMCPMC5118210
OpenAlexW2530080139

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.