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Microleakage around glass-ceramic insert restorations luted with a high-viscous or flowable composite
Sinan Salim1, Ario Santini, Khulood Najeeb Safar
1Baghdad Dental School, University of Baghdad, Baghdad, Iraq.
Summary
Glass-ceramic inserts in Class V restorations reduce microleakage when used with flowable composites. Using inserts with high-viscous composites did not significantly improve microleakage compared to the composite alone.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
- Biomaterials
Background:
- Microleakage remains a challenge in Class V resin restorations, potentially compromising longevity.
- Glass-ceramic inserts offer a novel approach to enhance restoration integrity.
Purpose of the Study:
- To evaluate microleakage around Class V restorations using glass-ceramic inserts luted with either high-viscous or flowable composite resins.
- To compare insert-based restorations with bulk-filled controls.
Main Methods:
- Class V preparations in human premolars were restored with glass-ceramic inserts and luted with high-viscous or flowable composites, or bulk-filled with composites.
- Teeth underwent thermocycling, and microleakage was assessed using a dye penetration method.
- Statistical analysis included Kruskal-Wallis and Dunn's tests.
Main Results:
- Glass-ceramic inserts with flowable composites significantly reduced microleakage compared to bulk-filled flowable composites.
- No significant difference in microleakage was observed between inserts with high-viscous composites and bulk-filled high-viscous composites.
- Flowable composite-luted inserts showed less microleakage than high-viscous composite-luted inserts at gingival margins.
Conclusions:
- Glass-ceramic inserts are beneficial for reducing microleakage in Class V preparations when combined with flowable composites.
- The use of ceramic inserts with viscous composites did not offer significant microleakage reduction compared to viscous composites alone.