Class 1 preparation for amalgam

Identify class 1 carious lesions

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State types of class 1 cavities

• simple

• compound

• complex

• buccal/palatal pit

Name two and three surface class 1 cavities

• occluso-lingual

• occluso-buccal

• occulso-bucco-lingual

• disto-lingual

How does caries start?

• demineralization

• remineralization

• discolouration

• fracture

How deep should you prep the tooth on the typodont?

• 1.5 - 2.0 mm

• 2.0 - 2.5 mm

• 1.0 - 1.5 mm

• 2.5 - 3.0 mm

Identify these teeth

• upper molars

• lower molars

• upper premolars

• lower premolars

Resistance form is the shape of the cavity prep to prevent

• fracture of the restoration

• fracture of the tooth

• lateral displacement of the restoration

• vertical displacement of the restoration

How is amalgam retained in the tooth?

• mechanical lock

• convergence

• divergence

• single bond

What is retention form?

• Form/design in the prep that will prevent the restoration from dislodgement in a vertical direction

• Form/design in the prep that will prevent the restoration from dislodgement in a horizontal direction

• Form/design in the prep that will prevent the restoration from dislodgement in a mesial direction

• Form/design in the prep that will prevent the restoration from dislodgement in a distal direction

Convenience form is__________________________________

• enough space to allow inspection

• enough space to allow manipulation of instruments

• enough space for cavity toilet

• enough space for occlusion