Dental ceramics are extensively used in dentistry for various applications, primarily due to their aesthetic properties and biocompatibility.
What are ceramics used for in dentistry? 4 key applications explained
1. Resin-Composite Restorative Materials
These materials are used for repairing and rebuilding teeth.
They consist of a resin binder and ceramic filler.
The ceramic filler can be pulverized quartz, colloidal silica, or silicate glasses containing strontium or barium to enhance X-ray opacity.
Despite their aesthetic appeal, resin composites lack the longevity of dental amalgams, especially in posterior restorations.
They are prone to degradation due to the breakdown of the bond between filler particles and the matrix.
Resin composites can also be compromised by fatigue and thermal cycling, potentially leading to the formation of caries or cavities.
2. Fixed Prostheses
Dental ceramics are crucial in the creation of fixed prostheses such as crowns, bridges, inlays, and onlays.
These are typically made using a dental furnace.
The process involves taking a mold of the patient's mouth, creating a 3D computer program, and then heating ceramic composites in a highly uniform furnace.
The fired ceramic pieces are then machined into the final dental prosthetic.
3. Dental Porcelain
This type of ceramic is used for making crowns and veneers.
Dental porcelain is a form of unglazed ceramic that helps maintain bone density.
However, it is softer than natural dentin and requires support from the natural tooth structure or a bonding agent.
Dental porcelain is valued for its strength and durability, as well as its aesthetic appeal.
4. Metal Ceramic Based Systems
These systems combine the aesthetic properties of ceramics with the mechanical strength of metals.
They are used in situations where both aesthetic appeal and durability are required.
Metal ceramic based systems are essential for the fabrication of dental prostheses that need to withstand the functional forces generated during chewing and other oral activities.
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