TY  - JOUR
TI  - Effect of Thermocycling On Mechanical and Surface Properties of Three Posterior
Restorative Materials
AB  - Background: To evaluate the mechanical and surface properties of
two glass ionomer restorative systems (EQUIA Fil, Ionostar Molar)
and a resin composite (Charisma Classic) after thermocycling.
Methods: Twenty disk-shaped samples were prepared from each
material in teflon molds according to manufacturer’s instructions.
After the samples were stored in distilled water at 370C for 24 h,
microhardness and surface roughness measurements were
performed from each group and repeated after 5000 and 10000
thermocycling. Scanning electron microscopy examinations were
also performed. The data were analyzed by using Wilcoxon signed
rank and Bonferroni corrected multiple comparison tests.
Results: EQUIA did not exhibit significant differences in its
microhardness values after thermocycling (p>0.005). In contrast,
Ionostar Molar and Charisma Classic exhibited statistically
significant decreases in baseline microhardness after 5000 and
10000 thermocycling processes (both p<0.005). However, there
were no significant differences between 5000 and 10000
thermocycling groups for Charisma Classic (p=0.007). Ionostar
Molar exhibited no statistically significant differences between its
surface roughness values before and after thermocycling groups
(p=0.067). Similarly, there were no significant differences between
baseline and 5000 thermocycling groups for EQUIA and Charisma
Classic (p>0.05). However, a statistically significant increase was
observed after 10000 thermocycles for both of these two materials
(p=0.002 and p<0.001, respectively).
Conclusion: The EQUIA and Ionostar Molar exhibited mechanical
features similar to those of a resin composite, and thus, represent
promising materials for permanent restorations
AU  - Keleş, Ahmet
AU  - Küçükkaya Eren, Selen
AU  - Aksel, Hacer
AU  - Askerbeyli Örs, Sevinc
AU  - BALA, Oya
AU  - YIKILGAN, İhsan
DO  - 10.15311/selcukdentj.646987
PY  - 2021
JO  - Selcuk Dental Journal
VL  - 8
IS  - 2
SN  - 2148-7529
SP  - 32
EP  - 358
DB  - TRDizin
UR  - http://search/yayin/detay/513134
ER  -