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Nanoionomer: evaluation of microleakage
1Department of Paedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Manipal University, Mangalore, India.
Summary
Nanoionomer, a new dental material, showed the least microleakage compared to conventional and resin-modified glass ionomer cements. This suggests nanoionomer may offer superior sealing for dental restorations.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Biomaterials
Background:
- Glass ionomer cements are favored in pediatric dentistry for fluoride release and chemical bonding.
- Preventing microleakage through excellent material adherence is crucial for ideal restorative performance.
Purpose of the Study:
- To compare the microleakage of nanofilled resin-modified glass ionomer (nanoionomer) against conventional glass ionomer cement (GIC) and resin-modified glass ionomer cement (RMGIC).
Main Methods:
- Class V cavities were prepared in 30 extracted teeth.
- Teeth were restored with nanoionomer, RMGIC, or GIC.
- Following thermocycling and dye immersion, microleakage was assessed microscopically.
Main Results:
- Nanoionomer exhibited the lowest mean microleakage score (1.3).
- Resin-modified glass ionomer scored 3.2, and conventional glass ionomer cement scored 2.6.
- Nanoionomer demonstrated superior sealing ability compared to the other materials.
Conclusions:
- Nanoionomer shows promising resistance to microleakage.
- This suggests nanoionomer may be a superior restorative material compared to conventional and resin-modified glass ionomers.