MFDS Dental Materials

Question 1

Which monomer is the principal component of composite resin matrices?

Accepted Answer

Bis-GMA

Answer

PMMA

Answer

UDMA

Answer

TEGDMA

Question 2

The setting reaction of zinc phosphate cement involves:

Accepted Answer

Acid-base neutralisation

Answer

Polymerisation

Answer

Chelation

Answer

Free radical initiation

Question 3

Which alloy system is most commonly used for high-strength dental casting alloys?

Accepted Answer

Cobalt-chromium

Answer

Gold-palladium

Answer

Nickel-titanium

Answer

Silver-tin

Question 4

What property of impression materials describes their ability to recover from deformation after removal from the mouth?

Accepted Answer

Elastic recovery

Answer

Viscosity

Answer

Dimensional stability

Answer

Wettability

Question 5

Glass ionomer cement bonds to tooth structure primarily through:

Accepted Answer

Ionic bonding to calcium

Answer

Micromechanical retention

Answer

Van der Waals forces

Answer

Covalent bonding to collagen

Question 6

Which heat treatment process reduces the brittleness of dental porcelain?

Accepted Answer

Tempering

Answer

Sintering

Answer

Glazing

Answer

Degassing