ข้อมูลบทความ
ปี 2021 ปีที่ 71 ฉบับที่ 3 หน้า 205-211
Title:
Study of Methods to Improve the Physical Properties of Bioceramic Cement
Author(s):
Kunrawee Inprakhon, Busayarat Santiwong,
Pairoj Linsuwanont
Keyword(s):
Bioceramic cement, Calcium chloride, Calcium tungstate, Particle size, Physical property
Abstract:
This study aimed to investigate the effect of particle size, the addition of various concentrations of calcium chloride and calcium tungstate on the physical properties of white Portland cement. White Portland cement with two different particle sizes (12 and 5 Microns) were used as the main component. Calcium chloride with various concentrations was added as an accelerator, and calcium tungstate was used as a radiopacifier. The ISO 6876:2012 and ISO 9917-1:2007 standard testing protocol were applied for setting time, compressive strength and radiopacity evaluation. White Portland cement with calcium tungstate showed the radiopacity of 4.2 mmAl. Calcium chloride accelerated the setting time but also decreased the compressive strength. The dose dependent effect of 5 %, 10 %, 15 %, 20 %, 25 % and 30 % calcium chloride on setting time and compressive strength was not in a linear pattern. Small particle size Portland cement with 15 % calcium chloride provided a short setting time with acceptable compressive strength.