Glass ionomer cement (GIC) is a widely used dental material in pediatric dentistry due to its strong adhesion, fluoride release, and biocompatibility.
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Characteristics of Glass Ionomer Cement
Glass ionomer cement consists of a powder and a liquid that, when mixed, form a rigid, adhesive matrix. The powder contains fluoroaluminosilicate glass, while the liquid consists of polyalkenoic acids in an aqueous solution. This composition enables chemical bonding to the tooth structure and sustained fluoride release, aiding in enamel remineralization and cavity prevention.
Benefits of Glass Ionomer Cement in Pediatric Dentistry
1. Fluoride Release: Provides long-term fluoride release, strengthening enamel and reducing the risk of cavities.
2. Chemical Adhesion: Bonds directly to enamel and dentin without the need for acid etching, simplifying clinical procedures.
3. Biocompatibility: Well-tolerated by dental and soft tissues, minimizing adverse reactions.
4. Thermal Expansion Similar to Natural Teeth: Reduces the risk of marginal leakage and ensures long-lasting adaptation.
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1. Lower Mechanical Strength: Less resistant to wear and occlusal forces compared to composite resins.
2. Aesthetic Limitations: While improved, its translucency and color range may not fully match natural tooth appearance.
3. Moisture Sensitivity During Placement: Requires proper moisture control to prevent property alterations.
Uses of Glass Ionomer Cement in Pediatric Dentistry
° Restorations for Primary Teeth: Ideal for Class I, II, and V cavities in deciduous teeth due to its adhesion and fluoride release.
° Pit and Fissure Sealants: Used as a sealant in newly erupted permanent molars to prevent cavities.
° Liners and Bases: Serves as a protective base under restorations, providing thermal and chemical insulation.
° Cementation of Pediatric Crowns: Used for cementing stainless steel crowns on primary teeth.
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1. Cavity Preparation: Remove decayed tissue and clean the cavity without overextending margins.
2. Conditioning: Apply 10% polyacrylic acid for 10-15 seconds to enhance adhesion, then rinse and gently dry without dehydrating.
3. Mixing the Material: Follow the manufacturer’s recommended powder-to-liquid ratio, mixing until a homogeneous consistency is achieved.
4. Placement: Apply the glass ionomer cement into the prepared cavity, ensuring proper adaptation and avoiding air bubbles.
5. Initial Setting: Allow the material to set according to manufacturer instructions while protecting it from moisture and desiccation.
6. Finishing and Polishing: Once set, refine the restoration, adjust occlusion, and polish for improved aesthetics and longevity.
Conclusion
Glass ionomer cement is a valuable material in pediatric dentistry due to its adhesive properties, fluoride release, and biocompatibility. While it has some limitations in mechanical strength and aesthetics, its benefits for cavity prevention and ease of use make it a preferred choice for various pediatric dental applications.
References
1. Croll, T. P., & Nicholson, J. W. (2002). Glass ionomer cements in pediatric dentistry: Review of the literature. Pediatric Dentistry, 24(5), 423-429. Recuperado de
2. Berg, J. H. (2002). Glass ionomer cements. Pediatric Dentistry, 24(5), 430-438. Recuperado de
3. Sikka, N., & Brizuela, M. (2024). Glass Ionomer Cement. En StatPearls. StatPearls Publishing
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