CDT 7 - Restorative techniques for Class II cavities

Question 1

class II cavities: possible materials used to restore?

Answer 1

amalgam (direct)
resin composite
gold (indirect)

Question 2

matrix band: used for?

Answer 2

• reproducing tooth contour
• establishes contact with adjacent tooth
• prevents cervical overhang of amalgam
• permits adequate condensation

Question 3

cavity with many missing walls: how to augment retention?

Answer 3

• dentine pins: however risk of pulpal exposure

- bonded amalgam: reinforces residual structure

Question 4

resin composite: only use when there is?

Answer 4

• small class II cavity
• excellent moisture control
• all margins on enamel present

Question 5

vitrebond: advantages?

Answer 5

• adheres to tooth
• roughened surface
• micromechanical retention
• offers potential for chemical bond with resin composite
• offers potential for sandnwich techniques