Evidence map›Paper›PMID 24674340›Full record

ArticleDental materials : official publication of the Academy of Dental Materials2014

Role of filler and functional group conversion in the evolution of properties in polymeric dental restoratives.

Parag K Shah, Jeffrey W Stansbury

Open access · greenAbstract read
In one paragraph

Article in Dental materials : official publication of the Academy of Dental Materials, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
10.7field-weighted citation impact, top 1% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 104 citations in OpenAlex.

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  18. Developments in resin-based composites.British dental journal · 2022
    Review
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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

2 authors at 2 institutions in 1 country.

Parag K ShahDepartment of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA.
Jeffrey W StansburyDepartment of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA; Department of Craniofacial Biology, School of Dental Medicine, Anschutz Medical Campus, Aurora, CO, USA. Electronic address: jeffrey.stansbury@ucdenver.edu.
University of Colorado Anschutz Medical Campus · USUniversity of Colorado Boulder · US

Funding

Low Shrinkage Dental Resins from SOC OligomersR01DE014227 · NIDCR · UNIVERSITY OF COLORADO DENVER · PI STANSBURY, JEFFREY W. · 2002 to 2011
$2.7M
Application of Nanogel-modified Resins for Improved Polymeric Dental MaterialsR01DE022348 · NIDCR · UNIVERSITY OF COLORADO DENVER · PI STANSBURY, JEFFREY W. · 2012 to 2016
$1.9M
NIDCR NIH HHS R01 DE014227NIDCR NIH HHS R01DE014227NIDCR NIH HHS R01 DE022348
6 · The paper itself

Abstract

objectivesTo examine effects of shrinkage and modulus on the dynamic development of shrinkage stress as a function of methacrylate conversion and filler loading in a model photocurable dimethacrylate-based resin with a silanized barium glass filler.

methodsBisGMA/TEGDMA samples with filler loading levels of 0-70wt% were evaluated. Irradiation times and intensities were varied to achieve a wide range of conversion. Shrinkage stress measurements were accompanied with real-time conversion monitoring, while shrinkage and modulus measurements were made at different static conversion points.

resultsShrinkage increased nearly linearly with respect to conversion, while for a given value of conversion, it decreased proportionally with increasing filler content. Modulus advanced in an exponential fashion with conversion and also increased incrementally with filler content; however, modulus values rose disproportionately rapidly for the highest filler loading. At either high or low filler loading levels, stress at limiting conversion, which was inversely proportional to the filler load, was high while at an intermediate filler content, a minimum in stress was observed due to the combined effects of filler based shrinkage reduction, restricted limiting conversion and only moderately enhanced modulus. The level of polymerization stress predicted from the conversion-indexed shrinkage and modulus measurements over-estimated the experimental stress states as modulus evolved due to system compliance that to some degree mimics the clinical situation presented by photocuring bonded composite restorations. Significance Measurement of monomer conversion provides a common basis by which different material properties can be rationally compared.

Indexed as

Dental MaterialsPolymersDental MaterialsPolymersComposite dental restorativeDegree of conversionFillersModulusProperty evolutionShrinkageStress

Identifiers

PMID24674340
PMCPMC4034263
OpenAlexW2026498891

What OpenQuestion holds

Textmetadata
LicenceTDM
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.