Podcast
Questions and Answers
Why is it important that axial surfaces are smoothed during tooth preparation?
Why is it important that axial surfaces are smoothed during tooth preparation?
- To ensure proper seating of the restoration and reduce stress concentrations. (correct)
- To increase the surface area for better cementation.
- To create undercuts for mechanical retention.
- To allow for better light reflection through the restoration.
What is the most likely consequence of a finish line that is not smooth or continuous?
What is the most likely consequence of a finish line that is not smooth or continuous?
- Increased retention of the final restoration.
- Decreased plaque accumulation around the restoration.
- Poor marginal fit, potential for cement washout, and increased risk of secondary caries. (correct)
- Improved marginal adaptation of the restoration.
When smoothing axial surfaces, what is the primary reason for ensuring all point angles are also smoothed?
When smoothing axial surfaces, what is the primary reason for ensuring all point angles are also smoothed?
- Sharp point angles create stress concentration points within the restoration and tooth. (correct)
- Sharp point angles will contribute to better aesthetics.
- Smoothing point angles simplifies the impression-taking process.
- Smoothing point angles makes it easier to distinguish the preparation margins.
Which type of bur is recommended for creating smooth axial surfaces?
Which type of bur is recommended for creating smooth axial surfaces?
A dentist is refining the finish line of a crown preparation. What is the most important characteristic of the ideal finish line?
A dentist is refining the finish line of a crown preparation. What is the most important characteristic of the ideal finish line?
Flashcards
What are axial surfaces?
What are axial surfaces?
Surfaces along the long axis of a tooth
What are point angles?
What are point angles?
Sharp angles where surfaces meet on a tooth preparation.
What is a finish line?
What is a finish line?
The prepared margin of a tooth for a restoration.
What is polishing with fine diamond burs?
What is polishing with fine diamond burs?
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What contributes to a good tooth preparation?
What contributes to a good tooth preparation?
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Study Notes
- Axial surfaces, including point angles, require smoothing during tooth preparation.
- A smooth, continuous finish line is essential for accurate restoration seating and marginal adaptation.
- Fine diamond burs are recommended to achieve the desired smoothness on axial surfaces.
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