ORE Part 2 Restorative Dentistry 2

Question 1

Which type of glass ionomer cement is most appropriate as a lining under a composite restoration?

Accepted Answer

Conventional glass ionomer (resin-modified)

Answer

Resin-modified glass ionomer is ideal as a lining due to its fluoride release, adhesion to dentine, and compatibility with composite bonding systems.

Question 2

What is the purpose of a wedge when placing a Class II restoration?

Accepted Answer

Separate the teeth and adapt the matrix band

Answer

A wedge separates teeth slightly to compensate for matrix thickness, adapts the band cervically, and protects the adjacent tooth during preparation.

Question 3

According to current UK guidelines, when should a direct pulp cap be considered?

Accepted Answer

Mechanical exposure in a symptom-free tooth with healthy pulp

Answer

Direct pulp cap is indicated for mechanical or traumatic exposures in teeth with no signs of irreversible pulpitis, offering a chance of pulp preservation.

Question 4

Which base material provides the greatest thermal insulation under a metallic restoration?

Accepted Answer

Zinc oxide eugenol cement

Answer

Zinc oxide eugenol has sedative properties and low thermal conductivity, making it an effective base for thermal insulation under metal restorations.

Question 5

What is the recommended occlusal reduction for a full-coverage porcelain-fused-to-metal (PFM) crown on a posterior tooth?

Accepted Answer

1.5–2.0 mm

Answer

A minimum of 1.5–2.0 mm occlusal reduction is required for PFM crowns to allow adequate metal and porcelain thickness without compromising strength.

ORE Part 2 Practice Test

ORE Part 2 Practice Test

ORE Part 2 Restorative Dentistry 2