Chapter 26: Amalgam Placement, Carving, Finishing, and Polishing

These flashcards cover key concepts, procedures, and considerations related to amalgam placement, carving, finishing, and polishing as discussed in Chapter 26.

What is the purpose of finishing and polishing amalgam restorations?

To achieve smooth and flush cavosurface margins, recreate defined anatomy, decrease plaque retention, promote healthier surrounding tissue, and improve aesthetics.

What is the first step in the procedure for condensing amalgam?

Place the triturated material in the amalgam well.

What should be used to transfer amalgam from the well to the tooth?

An amalgam carrier.

What is the goal of amalgam burnishing?

To ‘precarve’ the overfilled amalgam and begin shaping the anatomy of the restoration.

List two indications for finishing and polishing amalgam restorations.

1. Presence of overhangs. 2. Lack of functional anatomy.

What are some common errors in carving amalgam?

Overextension, flash, and creating open margins.

What are the benefits of proper finishing and polishing of amalgam restorations?

Increased longevity of the restoration and higher resistance to tarnish and corrosion.

When should a restoration be replaced instead of finished and polished?

If there is excessive corrosion, recurrent decay, or an open margin.

What materials are included in the armamentarium for finishing and polishing amalgam restorations?

Mouth mirror, articulating paper, explorer, slow-speed handpiece, and finishing burs.

Why should heat be avoided during amalgam finishing?

Excessive heat can lead to breakdown and corrosion of the amalgam.

What is the correct sequence for smoothing cavosurface margins?

Use a large round or flame finishing bur, then change to a smaller bur for grooves and cusp slopes.

What are some types of polishing supplies used for amalgam restorations?

Rubber points and cups, pumice, tin oxide, and polishing discs.