Restorative Materials

Question 1

Morphology of primary teeth

Answer 1

smaller crown
more bulbous crowns
marked cervical constrictions
finer divergence of roots
line contact
uniform thickness of enamel
large pulp follows external contours of tooth

Question 2

Composite

Answer 2

Pros - adhesive/aesthetic/wear properties
Cons - technique sensitive/expensive

Question 3

Compomer

Answer 3

Poly acid modified composite restoration
acid-base reaction occurs in mouth allowing fluoride release
aesthetic
less moisture sensitive composite
fracture and wear resistance less than composite

Question 4

Glass Ionomer conventional

Answer 4

Pros - adhesive/tooth coloured/fluoride leaching/good stabilisation of multiple carious teeth
Cons - brittle/ susceptible to erosion and wear

Question 5

Glass ionomer resin modified

Answer 5

Mechanical strength and wear resistance > GI conventional
Pros - adhesive/aesthetic/command set/ fluoride release
Cons - water absorption/wear

Question 6

Glass Ionomer high viscosity

Answer 6

ART