part 5 Flashcards
What is the purpose of pre-carve burnishing?
To ensure that the marginal amalgam is well condensed before carving
Involves using heavy strokes on the surface.
What is the main goal of carving in dental restoration?
To remove excess amalgam and ensure the filling conforms to tooth anatomy
Movement of carvers should be from tooth to filling.
What is the function of post-carve burnishing?
To improve smoothness and produce a satiny appearance
Involves lightly rubbing the surface of the restoration with an amalgam burnisher.
What does checking of occlusion involve?
Checking for premature contacts
Ensures proper alignment and function of the restoration.
What is the purpose of finishing in dental restoration?
To provide finishing touches using fine grip carborundum stone or finishing burs
Ensures a polished and refined surface.
What is the typical timing for polishing after carving?
Usually done 24 hours after carving
Allows for better surface quality and aesthetics.
List the purposes of finishing and polishing.
- Produce a restoration that can be easily cleaned by the patient
- Allow surrounding tissue to be healthier
- Provide a more corrosion resistant surface
These benefits contribute to the longevity and health of the dental restoration.
What are direct esthetic restorations aimed at?
Restoring the appearance and function of teeth, particularly in the anterior region
Focuses on cosmetic and functional improvements.
Who produced the first translucent filling material and when?
Fletcher in 1878
This material was called Silicate cement.
What significant development in dental materials occurred in 1962?
Composite resins were developed by Dr. Ray Bowen
This marked a significant advancement in restorative dentistry.
What are the components of silicate cement?
- Powder: ZnPO4 / aluminomPO4
- Liquid: Orthophosphoric acid
Phosphoric acid acts as a neutralizing agent for acidity.
What are the optical properties of silicate cement?
- Highly translucent
- Matches tooth shade
- Initially darker, becomes lighter over time
This property is crucial for aesthetic restorations.
What is the purpose of pre-carve burnishing?
To ensure that the marginal amalgam is well condensed before carving
Involves using heavy strokes on the surface.
What is the main goal of carving in dental restoration?
To remove excess amalgam and ensure the filling conforms to tooth anatomy
Movement of carvers should be from tooth to filling.
What is the function of post-carve burnishing?
To improve smoothness and produce a satiny appearance
Involves lightly rubbing the surface of the restoration with an amalgam burnisher.
