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Tytuł:
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Effect of pressure and light curing of composite micro hardness.
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Autorzy:
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Campanella V; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Gallusi G; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Di Taranto V; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Cugini C; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Nardi R; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Mea A; Department of Clinical Sciences and Translational Medicine, Dental School, University of Rome 'Tor Vergata', Rome, Italy.
Marzo G; Department of Life, Health and Environmental Sciences, Dental School, University of L'Aquila, L'Aquila, Italy.
Libonati A; Department of Surgical Sciences, Dental School, Catholic University of Our Lady of Good Counsel of Tirane, Tirane, Albania.
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Źródło:
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Journal of biological regulators and homeostatic agents [J Biol Regul Homeost Agents] 2020 Jan-Feb; Vol. 34 (1 Suppl. 1), pp. 39-47. DENTAL SUPPLEMENT.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: 2007- : Chieti, Italy : Biolife
Original Publication: Milano ; Birmingham, AL : Wichtig editore
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MeSH Terms:
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Composite Resins*
Dental Materials*
Light-Curing of Dental Adhesives*
Materials Testing*
Hardness ; Pressure ; Surface Properties
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Contributed Indexing:
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Keywords: Vickers hardness test; hardness; micro hybrid composite; polymerization; pressure
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Substance Nomenclature:
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0 (Composite Resins)
0 (Dental Materials)
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Entry Date(s):
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Date Created: 20200218 Date Completed: 20200306 Latest Revision: 20210728
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Update Code:
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20240105
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PMID:
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32064834
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The aim of this study is to evaluate the micro hardness Vickers of a composite micro hybrid polymerized under constant pressure. Twelve experimental samples were made equally divided into two groups: an experimental group and a control. Enamel plus HRi (Micerium) microbiotic composite resin, UD3 colour, was inserted into a syringe heater (ENA HEAT Composite Heating Conditioner) so that the material could be brought to a temperature of 39°C. A defined amount of composite resin is taken from the syringe with a Heidemann spatula and placed between two slides, previously cleaned with 90 ° alcohol. The samples are then inserted one at a time into a special device for constant pressure application. Vickers hardness measurements were made on the top of surfaces. The mean value of the samples belonging to the experimental group is 56.81 ± 0.71. The mean value of the control samples is 52.02 ± 2. The results obtained allow us to state that applying a constant pressure during the cementation phase of indirect adhesive restorations allows to obtain better mechanical characteristics of the composite used as a cementing agent.
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