What is the primary function of a substructure in ceramic restorations?
The substructure provides support and stability to the ceramic material, ensuring that the restoration functions properly and is durable.
What is the most commonly used material for substructure in ceramic dental restorations?
Materials such as metal or zirconia are commonly used for substructure due to their strength and ability to withstand the pressures of chewing.
Why is zirconia often preferred for substructures in dental ceramics?
Zirconia is known for its exceptional strength, making it suitable for substructures in dental restorations that require durability and resistance to fracture.
How does the substructure affect the overall performance of a ceramic restoration?
A well-designed substructure ensures that the ceramic restoration is stable, functional, and long-lasting by providing support against stress and pressure.
What role does the substructure material play in the longevity of a ceramic restoration?
The substructure material significantly influences the durability and resistance of the restoration to wear and fracture, thus affecting its overall longevity.
Why is it important to match the substructure material to the type of ceramic used?
Matching the substructure material with the ceramic ensures compatibility in terms of strength, durability, and appearance, contributing to the overall success of the restoration.
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What is a disadvantage of using a metal substructure in dental ceramics?
While metal substructures provide strength, they may be less aesthetic and can show through translucent ceramic materials.
What is the most common method of preparing a substructure for ceramic work?
The most common method is to use CAD/CAM technology, which allows for precise design and milling of substructures that fit the patient's needs.
How does the choice of substructure material affect the overall treatment plan for dental ceramics?
The choice of material affects the complexity of the restoration process, the cost, and the type of ceramic used for the final restoration.