MFDS Clinical Dental Sciences

Question 1

The periodontal probe reading indicating moderate periodontitis is a pocket depth of:

Accepted Answer

4–6 mm

Answer

Pocket depths of 4–6 mm typically indicate moderate periodontitis; readings >7 mm are associated with severe periodontitis according to the 2017 AAP/EFP classification.

Question 2

The BEWE (Basic Erosive Wear Examination) score of 3 indicates:

Accepted Answer

Hard tissue loss ≥50% of surface area

Answer

BEWE score 3 indicates severe erosive wear with hard tissue loss of 50% or more of the surface area, often exposing dentine extensively.

Question 3

When carrying out a direct pulp cap, which material is currently considered the gold standard?

Accepted Answer

Mineral trioxide aggregate (MTA)

Answer

MTA has become the gold-standard pulp-capping material due to its superior biocompatibility, sealing ability and consistent promotion of tertiary dentine bridge formation compared to calcium hydroxide.

Question 4

The 'rule of twos' in endodontics refers to:

Accepted Answer

Working length to be confirmed with two radiographs

Answer

The 'rule of twos' recommends confirming working length radiographically at two stages (initial and master cone) to ensure accuracy in root canal treatment.

Question 5

The functional unit of the periodontium that suspends the tooth in the socket is the:

Accepted Answer

Periodontal ligament

Answer

The periodontal ligament is the fibrous connective tissue structure running between cementum and alveolar bone that suspends and supports the tooth during function.

MFDS Part 1 Practice Test

MFDS Part 1 Practice Test

MFDS Clinical Dental Sciences