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Published in: Production Engineering 2/2019

28-03-2019 | Production Process

Functional analyses to assess the effect of the curing process on the properties of light activated composites

Authors: A. Gloria, M. Martorelli, S. Gerbino, F. Tagliaferri, V. Kräusel, A. Lanzotti

Published in: Production Engineering | Issue 2/2019

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Abstract

Light activated composites are the most popular choice in the field of dental restoration. They generally show internal stress even after a prolonged time period. The knowledge of mechanical properties and residual stress should provide interesting information on the clinical performance of such materials. Accordingly, in the current research experimental analyses were carried out to assess the effect of the curing process on the properties of one of the most commonly employed light activated dental composites (Gradia Direct—GC Corporation, Japan). At 10 min, 1 h and 24 h after light curing, the bending modulus (4.7–6.2 GPa) as well as the punching performance (peak load of 12.1–17.5 N) were evaluated for the micro-hybrid composite. Scanning electron microscopy also allowed to analyze the fracture surface. Residual stresses ranging from 0.67 ± 0.15 MPa to 1.12 ± 0.17 MPa were measured by means of the thin-ring-slitting approach reported in the literature, according to measurement time and cutting time.
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Metadata
Title
Functional analyses to assess the effect of the curing process on the properties of light activated composites
Authors
A. Gloria
M. Martorelli
S. Gerbino
F. Tagliaferri
V. Kräusel
A. Lanzotti
Publication date
28-03-2019
Publisher
Springer Berlin Heidelberg
Published in
Production Engineering / Issue 2/2019
Print ISSN: 0944-6524
Electronic ISSN: 1863-7353
DOI
https://doi.org/10.1007/s11740-019-00895-2

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