Why fiberglass is preferable
The modulus of elasticity of glass fiber is close to that of dentin: the pin springs slightly along with the tooth, and does not act like a rigid wedge. This significantly reduces the risk of longitudinal root fracture, the main complication of post structures. In addition, the pin is light and does not show through the ceramic crown, which is important for the front teeth. The fixation is only adhesive, so the canal must be dry and clean.
What is tooth restoration
Restoration is the restoration of the shape, function and appearance of a tooth using composite materials directly in the oral cavity, in one visit. Unlike a crown, it does not require grinding of the entire tooth and preserves a maximum of its own tissues.
A separate task is the restoration of the stump: when only the walls or the root remain of the tooth, the doctor creates a foundation on which a crown is subsequently placed.
How to restore the stump
- composite without support - when strong tooth walls are preserved
- anchor pin with composite - a metal pin in the channel as a support
- fiberglass pin with composite - elasticity is close to the tooth tissue, the risk of root splitting is lower
- cast stump inlay - in case of significant destruction, manufactured in the laboratory
Materials
Light-curing composites provide better aesthetics and strength, while glass ionomer cements provide chemical adhesion to dentin and fluoride release. Glass ionomer is often used as a spacer under a composite, for cervical defects and in pediatric practice.