TY - JOUR
T1 - Effect of resin thickness and light-curing irradiance on the hardness and depth of cure of short fiber-reinforced resin composite
AU - Hardiyanti, K. P.
AU - Herda, E.
AU - Indrani, D. J.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2018/9/7
Y1 - 2018/9/7
N2 - This study analyzed the effect of short fiber-reinforced resin composite (SFRC) thickness and light-curing irradiance on the depth of cure. A total of 24 specimens of SFRC (EverX PosteriorTM) were made and divided into two different groups based on thickness: 4 and 5 mm (n = 12), formed into a cylindrical shape with a diameter of 6 mm. Each group was divided into two subgroups cured by different light-emitting diode (LED) curing units with different irradiances: 1000 and 1200 mW/cm2 (n = 6). Each specimen was cured for 20 s with a 2-mm light-curing distance. The depth of cure was measured by calculating a Vickers hardness ratio of the bottom to the top surfaces of specimens (%). Data were analyzed statistically by one-way ANOVA tests, followed by post hoc Fisher's least significant diameter (LSD) tests. The depths of cure in the 4-mm thickness groups cured by 1000 and 1200 mW/cm2 light-curing irradiance were 79.46 ± 0.85% and 80.74 ± 0.95%, respectively, compared to 49.41 ± 0.47% and 61.65 ± 0.77%, respectively, in the 5-mm thickness groups. The results showed significant differences (P < 0.05) in the depth of cure in all groups tested. It can be concluded that SFRC thickness and light-curing irradiance have a significant effect on the depth of cure.
AB - This study analyzed the effect of short fiber-reinforced resin composite (SFRC) thickness and light-curing irradiance on the depth of cure. A total of 24 specimens of SFRC (EverX PosteriorTM) were made and divided into two different groups based on thickness: 4 and 5 mm (n = 12), formed into a cylindrical shape with a diameter of 6 mm. Each group was divided into two subgroups cured by different light-emitting diode (LED) curing units with different irradiances: 1000 and 1200 mW/cm2 (n = 6). Each specimen was cured for 20 s with a 2-mm light-curing distance. The depth of cure was measured by calculating a Vickers hardness ratio of the bottom to the top surfaces of specimens (%). Data were analyzed statistically by one-way ANOVA tests, followed by post hoc Fisher's least significant diameter (LSD) tests. The depths of cure in the 4-mm thickness groups cured by 1000 and 1200 mW/cm2 light-curing irradiance were 79.46 ± 0.85% and 80.74 ± 0.95%, respectively, compared to 49.41 ± 0.47% and 61.65 ± 0.77%, respectively, in the 5-mm thickness groups. The results showed significant differences (P < 0.05) in the depth of cure in all groups tested. It can be concluded that SFRC thickness and light-curing irradiance have a significant effect on the depth of cure.
UR - http://www.scopus.com/inward/record.url?scp=85054484017&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1073/5/052016
DO - 10.1088/1742-6596/1073/5/052016
M3 - Conference article
AN - SCOPUS:85054484017
SN - 1742-6588
VL - 1073
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 5
M1 - 052016
T2 - 2nd Physics and Technologies in Medicine and Dentistry Symposium, PTMDS 2018
Y2 - 18 July 2018 through 18 July 2018
ER -