image of advantage and disadvantage of Glass ionomer cement
Generating Image
Here is a summary of the key points shown:
Advantages
- Releases fluoride - helps prevent secondary caries
- Bonds chemically to enamel and dentine (no acid etching needed)
- Biocompatible with pulp tissue
- Thermal expansion coefficient close to natural tooth
- Anticariogenic effect due to ion exchange with tooth
- Tolerates some moisture during placement
- Good for class III/V restorations and luting cements
Disadvantages
- Low fracture toughness and tensile strength
- Poor wear resistance - not suitable for load-bearing areas (class I/II)
- Sensitive to moisture contamination and desiccation during initial setting
- Surface can become rough over time
- More opaque than composite resin - limited esthetic use in anterior teeth
- Short working time in some formulations
Glass ionomer cement is best suited for non-load-bearing restorations, liners/bases, luting crowns/bridges, root surface caries, and pediatric dentistry where fluoride release is a priority.
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