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Sorption and solubility of luting cements in different solutions
Ayşe Meşe1, Michael F Burrow, Martin J Tyas
1Department of Prosthodontics, Dental Faculty, University of Dicle, Diyarbakir, Turkey. amese@dicle.edu.tr
Dental Materials Journal
|November 1, 2008
Summary
This study evaluated eight luting cements for solubility and dimensional stability in water and ethanol solutions. Some cements showed higher sorption and solubility, with varying stabilization times in different solutions.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
Background:
- Luting cements are crucial for dental restorations.
- Understanding their behavior in oral environments is essential for longevity.
Purpose of the Study:
- To assess the solubility, sorption, and dimensional stability of eight luting cements.
- To compare their performance in distilled water and a 50% ethanol:water mixture.
Main Methods:
- Disk specimens of eight luting cements were prepared and immersed in distilled water and 50% ethanol:water.
- Sorption and solubility were measured by weight changes after immersion and desiccation.
- Dimensional changes were assessed, and data analyzed using ANOVA and post-hoc tests.
Main Results:
- GC Fuji Plus and RelyX Luting2 exhibited the highest sorption and solubility in both solutions.
- Maxcem, Nexus 2, Panavia F, RelyX Veneer, and VariolinkII showed significantly smaller volume changes.
- All cements stabilized in water within 2 weeks; GC Fuji Plus, Maxcem, Panavia F, and seT required 3-4 weeks in ethanol:water.
Conclusions:
- Luting cement stability varies significantly in different solutions.
- Ethanol-water solutions present a greater challenge to cement stability than distilled water.
- Material selection should consider the potential for sorption, solubility, and dimensional changes in the oral environment.
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