Evidence map›Paper›PMID 30126991›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Nonuniformity in ligaments is a structural strategy for optimizing functionality.

Gili R S Naveh, Jonathan E Foster, Tomas M Silva Santisteban, Xianrui Yang, Bjorn R Olsen

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 35 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Gili R S NavehDepartment of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115; gili_naveh@hsdm.harvard.edu.
Jonathan E FosterDepartment of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115.
Tomas M Silva SantistebanMaterials and Structural Analysis Division, Thermo Fisher Scientific, Houston, TX 77084.
Xianrui YangDepartment of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115.
Bjorn R OlsenDepartment of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115.
Harvard University · USThermo Fisher Scientific (United States) · US

Funding

Tooth Movement derived by PDL Cellular ManipulationsK99DE025053 · NIDCR · HARVARD MEDICAL SCHOOL · PI NAVEH, GILI RINA · 2015 to 2016
$256k
NIDCR NIH HHS K99 DE025053
6 · The paper itself

Abstract

Ligaments serve as compliant connectors between hard tissues. In that role, they function under various load regimes and directions. The 3D structure of ligaments is considered to form as a uniform entity that changes due to function. The periodontal ligament (PDL) connects the tooth to the bone and sustains different types of loads in various directions. Using the PDL as a model, employing a fabricated motorized setup in a microCT, we demonstrate that the fibrous network structure within the PDL is not uniform, even before the tooth becomes functional. Utilizing morphological automated segmentation methods, directionality analysis, as well as second harmonic generation imaging, we find high correlation between blood vessel distribution and fiber density. We also show a structural feature in a form of a dense collar around the neck of the tooth as well as a preferred direction of the fibrous network. Finally, we show that the PDL develops as a nonuniform structure, with an architecture designed to sustain specific types of load in designated areas. Based on these findings, we propose that ligaments in general should be regarded as nonuniform entities, structured already at developmental stages for optimal functioning under variable load regimes.

Indexed as

X-Ray MicrotomographyAnimalsMiceMice, TransgenicPeriodontal LigamentToothfiber directionalityfiber segmentationmicroCTnonuniformityperiodontal ligament

Identifiers

PMID30126991
PMCPMC6130358
OpenAlexW2888545113

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.