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

Zinc phosphate cement

Answer

Calcium hydroxide only

Answer

Polycarboxylate cement

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

Stabilise the matrix band against the bur

Answer

Protect the adjacent tooth from preparation

Answer

Prevent overhang formation at the gingival margin only

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

Carious exposure in any tooth

Answer

Teeth with spontaneous pain

Answer

All cases of pulp exposure

Question 4

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

Accepted Answer

Zinc oxide eugenol cement

Answer

Zinc phosphate cement

Answer

Resin-modified glass ionomer

Answer

Calcium silicate cement

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

0.5–1.0 mm

Answer

2.5–3.0 mm

Answer

3.0–4.0 mm

Question 6

Which finishing bur is most appropriate for contouring composite resin in the interproximal area?

Accepted Answer

Flame-shaped fine diamond or finishing strip

Answer

Round carbide bur

Answer

Pear-shaped tungsten carbide

Answer

Large wheel diamond