TY - JOUR
T1 - The effects of a K2SO4 solution on the surface hardness of gypsum type III
AU - Permana, B. N.
AU - Prawirowinoto, Siti Triaminingsih
AU - Indrani, Decky Joesiana
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/8/30
Y1 - 2017/8/30
N2 - Gypsum type III is commonly used for working models and as a tool for restorations or dentures manufacturing in the laboratory. K2SO4 solution is recommended to be added to gypsum type III because it can accelerate the setting time. The aim of this study was to identify the effects of a K2SO4 solution on the surface hardness of gypsum type III. The surface hardness was tested using a Vickers Hardness Tester with a load of 500 gf. The results were analyzed using a one-way ANOVA. The surface hardness of gypsum type III manipulated using a 1.5% K2SO4 solution was higher than the surface hardness of gypsum type III manipulated without K2SO4 but lower than the surface hardness of gypsum type IV. Therefore, the use of a 1.5% K2SO4 solution can increase the hardness of gypsum type III but not enough to make it equivalent to the surface hardness of gypsum type IV.
AB - Gypsum type III is commonly used for working models and as a tool for restorations or dentures manufacturing in the laboratory. K2SO4 solution is recommended to be added to gypsum type III because it can accelerate the setting time. The aim of this study was to identify the effects of a K2SO4 solution on the surface hardness of gypsum type III. The surface hardness was tested using a Vickers Hardness Tester with a load of 500 gf. The results were analyzed using a one-way ANOVA. The surface hardness of gypsum type III manipulated using a 1.5% K2SO4 solution was higher than the surface hardness of gypsum type III manipulated without K2SO4 but lower than the surface hardness of gypsum type IV. Therefore, the use of a 1.5% K2SO4 solution can increase the hardness of gypsum type III but not enough to make it equivalent to the surface hardness of gypsum type IV.
UR - http://www.scopus.com/inward/record.url?scp=85029605556&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/884/1/012087
DO - 10.1088/1742-6596/884/1/012087
M3 - Conference article
AN - SCOPUS:85029605556
SN - 1742-6588
VL - 884
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012087
T2 - 1st Physics and Technologies in Medicine and Dentistry Symposium, PTMDS 2017
Y2 - 15 July 2017 through 16 July 2017
ER -