Amalgam Restoration DHYG 113 Restorative Dentistry I

Objectives Describe procedures for condensing and carving amalgam restorations for Class I and Class II cavity preparations Identify correct sequencing of instruments used in amalgam placement Describe criteria for evaluation of the finished amalgam restoration

Class I Amalgam Restoration Pits and fissures Molars Premolars Maxillary anteriors

Amalgam Carrier

Condensing the Amalgam

Continue condensing

Condense into line angles

Add larger increments

Continue Condensing

Larger Increments

Large Condenser

Overfill

Condense at Cavosurface Margin

Discoid Carver

Begin Carving With discoid, start to carve away excess amalgam – be careful not to “gouge” around the cavosurface margin

Continue carving Use the countours of the cusps to continue carving, being careful not to remove too much amalgam at the margins

Cleioid Carver Used to define occlusal anatomy Carefully carve the amalgam so that the side of the cleioid carver is in contact with the tooth to avoid removing too much amalgam at the cavosurface margin

Carving with Cleioid

Carving

Check Occlusion Marks should be on cusp tips only

Check Occlusion

Finished Class I Amalgam

Class II Amalgam Apply Dycal Copalite Varnish

Apply Matrix Retainer

Secure Band with Wedge

Insert Wedges from Lingual

Check fit of band on proximal Burnish with T-ball burnisher Band is flush with tooth surface

Condensers

Place Amalgam into Proximal

Condense into Box

Build up Amalgam at Proximal

Condense to against matrix band to close contact

Condense against band

Condense into Undercut

Continue Filling Prep

Condense well

Burnish

Remove Excess with Explorer

Carvers Hollenback Carver Discoid-Cleioid Carver

Discoid – begin to remove excess amalgam

Remove Wedge

Loosen Matrix Retainer

Hold down band while gently loosening it from tooth

Proximal surface carvers

Carve Proximal

Carve Marginal Ridge

Use Discoid to define cavosurface margins

Use Cleioid to define occlusal anatomy

Check Occlusion

Marks on cusp tips

Floss through contact

Finished MO Amalgam