Vickers Hardness and Shrinkage Stress Evaluation of Low and High Viscosity Bulk-Fill Resin Composite.
bulk-fill composite
composite resins
microhardness
shrinkage stress
Journal
Polymers
ISSN: 2073-4360
Titre abrégé: Polymers (Basel)
Pays: Switzerland
ID NLM: 101545357
Informations de publication
Date de publication:
30 Jun 2020
30 Jun 2020
Historique:
received:
09
06
2020
revised:
28
06
2020
accepted:
29
06
2020
entrez:
8
7
2020
pubmed:
8
7
2020
medline:
8
7
2020
Statut:
epublish
Résumé
The aim of this in vitro study was to evaluate the hardness and shrinkage stress (SS) of six bulk-fill resin composites. To evaluate microhardness (MH), ten 6 mm specimens were prepared using a metal mold for each selected bulk-fill resin composite and irradiated from the top side for 40 s using an LED light. After 24 h of storage, Vickers MH was evaluated on the upper, lower and lateral sides of the specimens. SS evaluation was then performed with a universal machine, which evaluated the contraction force generated by a bulk-fill composite specimen placed between two metal cylinders during and after light curing. The results were evaluated with a one-way ANOVA test with a post-hoc Bonferroni test and linear regression analysis (
Identifiants
pubmed: 32630127
pii: polym12071477
doi: 10.3390/polym12071477
pmc: PMC7407633
pii:
doi:
Types de publication
Journal Article
Langues
eng
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