What is the purpose of using a matrix band and retainer in an amalgam restoration, especially for Class II cavities?
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Correct answer: To confine the amalgam and recreate proximal contact and contour
A matrix band with a retainer confines the amalgam in proximal boxes, helps recreate proper contact and contour, and prevents over-extension during condensation.
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More Amalgam Restoration Assist questions
- Which of the following sequences correctly outlines the general steps of an amalgam restoration procedure (after cavity preparation)?
- Why is it important for a dental assistant to handle triturated amalgam with caution and not with bare hands?
- What is a likely consequence if a freshly placed amalgam restoration is subjected to heavy occlusal load before it has fully set?
- What is the primary composition of dental amalgam used for restorations?
- Which instrument is used to transport freshly mixed amalgam into a prepared cavity?
- Why is condensation of amalgam essential after placement into the cavity preparation?