Evidence map›Paper›PMID 34949477›Full record

ReviewDental materials : official publication of the Academy of Dental Materials2022

Laboratory methods to simulate the mechanical degradation of resin composite restorations.

Veronica P Lima, Jaqueline B Machado, Yu Zhang, Bas A C Loomans, Rafael R Moraes

Abstract readReview
In one paragraph

Review in Dental materials : official publication of the Academy of Dental Materials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
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

33 citing papers in PubMed.

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  11. Effect of Moving the Tip of the Light Curing Unit on the Irradiance Value Delivered.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2025
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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.

Veronica P LimaUniversidade Federal de Pelotas, Pelotas, RS, Brazil; Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
Jaqueline B MachadoUniversidade Federal de Pelotas, Pelotas, RS, Brazil.
Yu ZhangDepartment of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, USA.
Bas A C LoomansRadboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
Rafael R MoraesUniversidade Federal de Pelotas, Pelotas, RS, Brazil. Electronic address: rafael.moraes@ufpel.edu.br.

Funding

Viscoelastic Modeling Aided Experimental Optimization toward Fracture-Resistant Porcelain-Veneered Zirconia and Lithium Disilicate RestorationsR01DE026279 · NIDCR · UNIVERSITY OF PENNSYLVANIA · PI KIM, JEONGHO, ZHANG, YU · 2017 to 2021
$2.0M
Toward novel translucent and strong nanostructured dental zirconiaR01DE026772 · NIDCR · UNIVERSITY OF PENNSYLVANIA · PI ZHANG, YU · 2017 to 2021
$1.8M
NIDCR NIH HHS R01 DE026279NIDCR NIH HHS R01 DE026772
6 · The paper itself

Abstract

objectivesThis study reviewed the literature to identify in vitro approaches that have been used to simulate the mechanical degradation and fatigue of resin composite restorations.

methodsA search for articles was carried out in 4 databases and included studies in which composite restorations were bonded to teeth and subject to cyclic loading. Articles were assessed for eligibility, and the following items were the extracted from the included studies: authors, country, year, materials tested, simulation device and details including load magnitude and frequency, number of cycles, type of antagonist, test medium, and temperature. Data were analyzed descriptively.

resultsThe 49 studies included showed a high level of heterogeneity in methods, devices, and test parameters. Nineteen different simulation devices were used, applying loads varying between 30 and 2900 N, and frequencies varying between 0.4 and 12 Hz. The load and frequency used most often were ~ 50 N (63.3%) and 1.5-1.7 Hz (32.7%). The number of cycles varied between 10 K and 2.4 M, 1.2 M was the most prevalent (40.8%). The majority of studies combined cyclic loading with at least one additional aging method: static liquid storage, thermo-mechanical cycling applied simultaneously, and thermal cycling as a discrete aging step were the three most frequent methods. The overall evidence indicated reporting problems, and suggested a lack of clinical validation of the research methods used. SIGNIFICANCE: Validation studies, underlying clinical supporting data, and better reporting practices are needed for further improving research on the topic. Specific suggestions for future studies are provided.

Indexed as

Composite ResinsDental Restoration, PermanentDental Stress AnalysisMaterials TestingResin CementsComposite ResinsResin CementsAgingChewing simulationDegradationDental restorationFatigueMechanical testing

Identifiers

PMID34949477
PMCPMC9903973

What OpenQuestion holds

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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.