ORE Part 2 Restorative Dentistry 3

Question 1

What is the most common cause of secondary caries around existing restorations?

Accepted Answer

Microleakage at the restoration margin

Answer

Microleakage allows oral fluids and bacteria to penetrate the restoration margin, leading to demineralisation and secondary (recurrent) caries.

Question 2

When assessing a tooth for a crown, which finding is an absolute contraindication?

Accepted Answer

Non-restorable caries extending below the alveolar crest

Answer

If caries or tooth destruction extends below the alveolar crest with insufficient ferrule, the tooth cannot be adequately restored with a crown.

Question 3

In the BEWE (Basic Erosive Wear Examination), a score of 3 indicates:

Accepted Answer

Hard tissue loss of more than 50% of the surface area

Answer

A BEWE score of 3 denotes severe erosive wear with hard tissue loss exceeding 50% of the surface, requiring urgent management.

Question 4

Which bonding agent generation is currently recommended for optimal dentine bonding in UK restorative practice?

Accepted Answer

Seventh or eighth generation (universal adhesives)

Answer

Universal (7th/8th generation) adhesives offer versatility, effective bonding to enamel and dentine, and can be used in etch-and-rinse or self-etch modes.

Question 5

What is the primary reason for bevelling enamel margins in anterior composite restorations?

Accepted Answer

Increase bonding surface area and improve aesthetics

Answer

Bevelling exposes enamel prisms end-on, increasing the bonding area and allowing a gradual colour transition for improved aesthetic blending.

ORE Part 2 Practice Test

ORE Part 2 Practice Test

ORE Part 2 Restorative Dentistry 3