Related Experiment Video
Updated: Nov 3, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Synthesis of partial stabilized cement-gypsum as new dental retrograde filling material
S Sadhasivam1, Jung-Chih Chen2, S Savitha3
1Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan; Division of Medical Engineering Research, National Health Research Institute, Zhunan, Miaoli County, Taiwan.
Abstract:
The study describes the sol-gel synthesis of a new dental retrograde filling material partial stabilized cement (PSC)-gypsum by adding different weight percentage of gypsum (25% PSC+75% gypsum, 50% PSC+50% gypsum and 75% PSC+25% gypsum) to the PSC. The crystalline phase and hydration products of PSC-gypsum were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. The handling properties such as setting time, viscosity, tensile strength, porosity and pH, were also studied. The XRD and microstructure analysis demonstrated the formation of hydroxyapatite and removal of calcium dihydrate during its immersion in simulated body fluid (SBF) on day 10 for 75% PSC+25% gypsum. The developed PSC-gypsum not only improved the setting time but also greatly reduced the viscosity, which is very essential for endodontic surgery. The cytotoxic and cell proliferation studies indicated that the synthesized material is highly biocompatible. The increased alkaline pH of the PSC-gypsum also had a remarkable antibacterial activity.
Related Concept Videos
Hydration of Cement
Additives and Fillers in Concrete
The...
Porosity in Cement Paste
The balance of water to cement in the mix is...
Types of Cement II
Retarders
The function of retarders is to delay the setting of concrete, and this effect can be measured using a penetration test. The retardation process involves adding...
Soundness of Cement

