Class I Amalgam Restoration Quiz

What surfaces are primarily repaired using a Class I amalgam restoration?

• Occlusal surfaces of premolars and molars

• Facial surfaces of incisors

• Lingual surfaces of mandibular molars

• Buccal surfaces of canines

What is the initial pulpal depth for Class I amalgam preparations?

• 0.5 mm inside the DEJ

• 1.0 mm from the central groove depth

• 0.2 mm inside the DEJ or 1.5 mm from the central groove depth, whichever is greater

• 1.5 mm inside the DEJ

What shape does the outline form often take for maxillary premolars?

• Square

• Triangular

• Butterfly

• Circular

What is the purpose of the primary resistance form in tooth preparation?

• To enhance aesthetic appearance

• To increase the depth of the cavity

• To limit the outline to sound tooth structure

• To create a sharp edge

What bur is commonly used to begin the preparation for Class I amalgam restorations?

• No. 245 bur

• No. 557 bur

• No. 169 bur

• No. 330 bur

What is the recommended faciolingual width for Class I preparations?

• 2.0 to 2.5 mm

• 0.5 to 1.0 mm

• 1.0 to 1.5 mm

• 1.5 to 2.0 mm

What should be done during the final tooth preparation stage?

• Apply a desensitizer

• Establish the outline form

• Remove any remaining defect

• Create the initial resistance form

What is the minimum amalgam thickness recommended to prevent fracture?

• 1.0 to 1.5 mm

• 0.5 to 1.0 mm

• 1.5 to 2.0 mm

• 2.0 to 2.5 mm

What is the primary method of retention for Class I preparations?

• Cusp coverage

• Converging external walls

• Use of pins

• Matrix placement

What should be avoided during the carving of amalgam?

• Using a sharp instrument

• Overpacking the preparation

• Creating deep occlusal grooves

• Evaluating occlusion