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Modified Formulations of Silicate-Based Cements: Comparative Study of Physicochemical Properties
Mirlyn de Souza Dias1, Raimundo Sales de Oliveira Neto2, Marcelo Antônio Santos da Silva3
1Postgraduate Program in Dentistry, Federal University of Ceará, 1273 Monsenhor Furtado St., Rodolfo Teófilo, Fortaleza 60455-730, CE, Brazil.
New experimental calcium silicate repair cements (ERCs) with zirconium (CZS) or strontium (SPS) show physicochemical properties comparable to commercial dental materials. These findings suggest potential for improved dental repair applications.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Calcium Silicate Cements
Background:
- Mineral trioxide aggregate (MTA) and Biodentine (BD) are widely used dental repair cements.
- There is a need for novel calcium silicate cements with tailored properties for enhanced clinical performance.
Purpose of the Study:
- To synthesize and characterize experimental calcium silicate repair cements (ERCs) incorporating zirconium (CZS) or strontium (SPS).
- To compare the physicochemical properties of these ERCs with commercial materials like white MTA-Angelus (WMTA), grey MTA-Angelus (GMTA), and Biodentine (BD).
Main Methods:
- Synthesis of CZS and SPS phases followed by formulation of powder-liquid cements.
- Assessment of setting time (ISO 6876/12), radiopacity (ASTM C266), volumetric solubility (micro-CT), pH, and ion release (FAAS/ICP-OES).
- Statistical analysis using ANOVA and Tukey's tests.
Main Results:
- CZS exhibited a shorter initial setting time (6 min) compared to SPS (11 min).
- Both ERCs demonstrated radiopacity above the ISO minimum, with CZS showing higher values (4.58 mm Al).
- Controlled solubility, alkaline pH, and sustained calcium/strontium ion release were observed, comparable to commercial materials.
Conclusions:
- Experimental ERCs incorporating CZS and SPS exhibit adequate physicochemical properties.
- These novel cements show performance comparable to established dental repair materials.
- The findings support the potential of CZS and SPS based cements for dental applications.
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