3. Clinical Composite 2

Question 1

Optimising composite includes consideration of (6)

Answer 1

Materials properties
Cavity design
Matrices
Manipulation
Configuration factor
Polymerisation contraction stress

Question 2

Definition of configuration factor

Answer 2

The ratio of bonded to unbounded surfaces

Question 3

Causes of polymerisation contraction stress (2)

Answer 3

Curing
Materials (polymers, change in volume)

Question 4

Definition of plasticity

Answer 4

Property of a material to undergo a non-reversible change of shape in response to an applied force (polymerisation)

Question 5

Definition of deformation

Answer 5

Change in shape due to an applied force (contraction)

Question 6

Minimum intensity required to adequately cure 1.5-2mm of composite resin

Answer 6

280-300mW/cm2

Question 7

Wavelength of camphorquinone

Answer 7

460nm