Τίτλος:
Effect of curing mode on the conversion and IIT-derived mechanical
properties of core build-up resin composites
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The aim of the study was to evaluate the degree of conversion and the
mechanical properties of five composite core build-up materials
polymerized in dual-curing and self-curing modes. The materials tested
were: Clearfil DC Core Plus (CF), Gradia Core (GC), Luxacore-Z Dual
Smartmix (LX), Multicore Flow (MC) and Paracore (PC). Diskshaped
specimens were prepared from each material; half the specimens were
light-cured, whereas the rest were only self-cured. After a 3-week
storage period (dark/dry/37 degrees C) the Martens Hardness, Indentation
Modulus, and Elastic Index were determined by instrumented indentation
testing (IIT), while the degree of conversion was assessed by ATR-FTIR
spectroscopy. Statistical analysis was performed by 2-way ANOVA and
post-hoc testing (alpha = 0.05). The dual-curing mode resulted in
statistically higher Martens Hardness and Elastic Index than the
selfcuring mode in most materials but showed insignificant differences
in Indentation Modulus. MC and PC demonstrated significantly higher
degree of conversion in both curing modes. Overall, the self-curing mode
was inferior to the dual-curing in conversion and mechanical properties
for most products, despite their differences in monomer composition and
filler loading.
Συγγραφείς:
Dimitriadi, M.
Petropoulou, A.
Anagnostou, M.
Zafiropoulou,
M.
Zinelis, S.
Eliades, G.
Περιοδικό:
Journal of the Mechanical Behavior of Biomedical Materials
Λέξεις-κλειδιά:
Core build-up composites; Conversion; Mechanical properties; ATR-FTIR;
IIT
DOI:
10.1016/j.jmbbm.2021.104757
