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Characterization and aqueous extraction of calcium hydroxide materials
Australian Dental Journal
|December 1, 1982
Summary
This study analyzed calcium hydroxide-based dental materials. Different formulations showed significant variations in pH, conductivity, and leachable components over time.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Dental Materials
Background:
- Dental cements often utilize calcium hydroxide for its therapeutic properties.
- Understanding the stability and ion release of these materials is crucial for clinical performance.
Purpose of the Study:
- To characterize and compare the properties of two types of calcium hydroxide-based dental materials.
- To evaluate the aqueous stability and ion release profiles of these materials.
Main Methods:
- Two single-product systems (calcium hydroxide in acrylic polymer gel) and eight dual-product systems (salicylate ester/calcium hydroxide cements) were prepared.
- Materials were subjected to water extraction tests over 24 hours (pH), 72 hours (conductivity), and 26 weeks (cumulative solubles).
Main Results:
- Significant differences in pH and conductivity were observed between the tested materials.
- Substantial variations in the cumulative extraction of calcium hydroxide and other solubles were recorded over 26 weeks.
Conclusions:
- The formulation of calcium hydroxide-based dental materials significantly impacts their aqueous stability and ion release characteristics.
- These findings highlight the importance of material selection and formulation for predictable clinical outcomes.