Make your teeth

Healthy and

Make it Glitter

The university of Georgia

Pediatric Dentistry III 

Atheer Ahmed 1330129

Amalgam restorations

Dental amalgam is a metal like restorative material composed of a mixture of silver/tin/copper alloy and mercury.

Dental Amalgam: Alloy of mercury, silver, tin, and copper, it may also contain palladium, zinc , gold to improve the handling characteristics

composition of amalgam

INDICATIONS OF AMALGM

Dental Amalgam: • Restoration of posterior teeth(ClassI&II) (Moderate to large preparations). • Class V preparations (when esthetics is not the prime concern). • Core build up for badly broken down teeth in the posterior teeth. • Sometimes in distal surface of canines. • For moderate caries control.

CONTAINDICATIONS OF AMALGM

1-Esthetics. 2- Extensive loss of tooth structure 3- Small class I and class II cavities.

ADVANTAGES OF AMALGM

1-Ease of use. 2- High compressive strength. 3-Excellent wear resistance. 4- long-term clinical results. 5- Economic 6-Can be bonded to tooth structure. 7-Self-sealing ability

DISADVANTAGES OF AMALGM

1-Lack of esthetics 2- Less conservative 3- Non-insulating 4- Corrosion and galvanism 5- Lack of reinforcement of weakened tooth structure

MANIPULAION OF AMALGM

1. Selection of alloy and mercury 2. Mercury alloy ratio (Proportioning) 3. Trituration (Mechanical and hand) 4. Mulling 5. Condensation (Hand and mechanical) 6. Pre-carve burnishing 7. Carving. 8. Post-carve burnishing. 9. Polishing .

Cavity preparation of amalgam

1. 90 degree . 2. The walls must be parallel or perpendicular to occlusal loads. 3. A definite gingival seat of 1.5-2 mm. in depth for compound cavities. 4. Rounded internal line angles. 5. Sufficient bulk at the isthmus area 6. Each portion must have its own independent retention and resistance

Thank you appledent

Than you so much dr. Megi Sharashenidze

your student Atheer Ahmed

Reference

WWW.GOOGLE.COMAmerican Association of Endodontists