TY - GEN
T1 - Effect of pH artificial saliva on the surface hardness of glass-hybrid restoration
AU - Yasmina, Eikla Luwlu
AU - Eriwati, Yosi Kusuma
AU - Triaminingsih, Siti
N1 - Publisher Copyright:
© 2021 Author(s).
PY - 2021/3/23
Y1 - 2021/3/23
N2 - This study aimed to determine the effect of the immersion period in artificial saliva with various pH on the surface hardness of glass-hybrid restorative material (EQUIA® FORTE Glass-Hybrid Restorative System, GC Corporation, Japan). There were 90 specimens (diameter 6mm, thickness 3mm) divided into nine treatment groups, immersed in artificial saliva with a pH of 4.5; 5.5; and 7 for 1 hour, 24 hours, and 72 hours at 37°C, respectively. Surface hardness was tested using Knoop hardness tester (Shimadzu HMV-G Micro Hardness Tester, Japan) with 50 grams load for 15 seconds, five indentations on each specimen. The results were analyzed statistically with One-way ANOVA (p <0.05). The results showed that there were significant differences between each group. The hardness values of the group immersed in artificial saliva pH 4.5 for 1 hour, 24 hours, and 72 hours were 69,48 ± 0.57 KHN, 54.76 ± 0.23 KHN, and 42.90 ± 0.41 KHN respectively. Meanwhile, the hardness values of the group immersed in artificial saliva pH 5.5 for 1 hour, 24 hours, and 72 hours were 75.34 ± 0.32 KHN, 57.45 ± 0.47 KHN, and 45.84 ± 0.27 KHN respectively. With artificial saliva pH 7 for 1 hour, 24 hours, and 72 hours, the hardness values were 82.89 ± 0.68 KHN, 62.49 ± 0.37 KHN, and 49.84 ± 0.14 KHN respectively. It can be concluded that the lower pH value of artificial saliva and prolonged immersion period can reduce the surface hardness value of glass-hybrid restorative materials.
AB - This study aimed to determine the effect of the immersion period in artificial saliva with various pH on the surface hardness of glass-hybrid restorative material (EQUIA® FORTE Glass-Hybrid Restorative System, GC Corporation, Japan). There were 90 specimens (diameter 6mm, thickness 3mm) divided into nine treatment groups, immersed in artificial saliva with a pH of 4.5; 5.5; and 7 for 1 hour, 24 hours, and 72 hours at 37°C, respectively. Surface hardness was tested using Knoop hardness tester (Shimadzu HMV-G Micro Hardness Tester, Japan) with 50 grams load for 15 seconds, five indentations on each specimen. The results were analyzed statistically with One-way ANOVA (p <0.05). The results showed that there were significant differences between each group. The hardness values of the group immersed in artificial saliva pH 4.5 for 1 hour, 24 hours, and 72 hours were 69,48 ± 0.57 KHN, 54.76 ± 0.23 KHN, and 42.90 ± 0.41 KHN respectively. Meanwhile, the hardness values of the group immersed in artificial saliva pH 5.5 for 1 hour, 24 hours, and 72 hours were 75.34 ± 0.32 KHN, 57.45 ± 0.47 KHN, and 45.84 ± 0.27 KHN respectively. With artificial saliva pH 7 for 1 hour, 24 hours, and 72 hours, the hardness values were 82.89 ± 0.68 KHN, 62.49 ± 0.37 KHN, and 49.84 ± 0.14 KHN respectively. It can be concluded that the lower pH value of artificial saliva and prolonged immersion period can reduce the surface hardness value of glass-hybrid restorative materials.
KW - artificial saliva pH
KW - glass-hybrid restorative material
KW - immersion period
KW - surface hardness
UR - http://www.scopus.com/inward/record.url?scp=85103481057&partnerID=8YFLogxK
U2 - 10.1063/5.0047199
DO - 10.1063/5.0047199
M3 - Conference contribution
AN - SCOPUS:85103481057
T3 - AIP Conference Proceedings
BT - 5th Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices
A2 - Lischer, Kenny
A2 - Supriadi, Sugeng
A2 - Rahman, Siti Fauziyah
A2 - Whulanza, Yudan
PB - American Institute of Physics Inc.
T2 - 5th International Symposium of Biomedical Engineering, ISBE 2020
Y2 - 28 July 2020 through 29 July 2020
ER -