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Synthesis of partial-stabilized cement (PSC) via sol-gel process
Wen-Hsi Wang1, Yuan-Ling Lee, Chun-Pin Lin
1Institute of Biomedical Engineering, National Taiwan University, Taiwan, Republic of China.
Journal of Biomedical Materials Research. Part A
|September 28, 2007
Summary
A new one-step sol-gel process enhances partial-stabilized cement (PSC) synthesis. This method improves PSC
Area of Science:
- Materials Science
- Biomaterials Engineering
- Dental Materials
Background:
- Traditional powder mixing for partial-stabilized cement (PSC) exhibits low reaction efficiency and initial strength.
- These limitations hinder PSC's application as a dental root-end filling material.
- Existing PSC preparation methods require improvement for enhanced performance.
Purpose of the Study:
- To develop a novel one-step sol-gel process for synthesizing partial-stabilized cement (PSC).
- To enhance the reaction efficiency and initial strength of PSC for dental applications.
- To investigate the properties and hydration behavior of sol-gel-derived PSC.
Main Methods:
- A one-step sol-gel synthesis route was employed for PSC preparation.
- A complexing ligand was utilized to control the activity of aluminum sec-butoxide (ASB).
- Techniques including thermogravimetric analysis (SDT), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) were used for characterization.
Main Results:
- The sol-gel process yielded PSC without reactant residue, confirmed by SDT.
- FTIR spectra indicated metal-atom bonding, and XRD identified PSC components.
- Sol-gel PSC showed accelerated portlandite formation and crystallinity, achieving detectable initial strength 24 hours earlier than traditional PSC, with a significantly higher 7-day microhardness (2.98 HV vs. 2.05 HV).
Conclusions:
- A modified sol-gel process successfully synthesizes partial-stabilized cement (PSC).
- This method significantly improves the initial strength and hydration properties of PSC.
- The enhanced PSC shows promise as an improved dental root-end filling material.
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