MFDS Part 1 - Membership of Faculty of Dental Surgery Dental and Maxillofacial Radiology Questions and Answers

Question 1

According to the Ionising Radiation (Medical Exposure) Regulations 2017 (IRMER), who holds the primary legal responsibility for the justification of a dental radiograph exposure?

Accepted Answer

The IRMER Practitioner

Answer

The Radiographer

Answer

The Practice Owner (Employer)

Answer

The Radiation Protection Adviser (RPA)

Question 2

A dental practice is conducting a routine quality assurance audit of its digital intraoral radiographs. According to the 'Guidance Notes for Dental Practitioners on the Safe Use of X-ray Equipment (2nd Edition)', what is the minimum target for 'diagnostically acceptable' radiographs?

Accepted Answer

Not less than 95%

Answer

Not less than 85%

Answer

Not less than 90%

Answer

Exactly 100%

Question 3

Under the Ionising Radiations Regulations 2017 (IRR17), which of the following is a primary responsibility of the appointed Radiation Protection Supervisor (RPS) within a dental practice?

Accepted Answer

To ensure compliance with the Local Rules on a day-to-day basis.

Answer

To conduct critical examinations of new X-ray equipment.

Answer

To provide detailed advice on the design of new dental facilities.

Answer

To carry out the justification and authorisation of all medical exposures.

Question 4

A new 8-year-old patient attends for an initial examination. Clinically, they have a mixed dentition with closed posterior contacts and no evidence of caries. According to the Faculty of General Dental Practice (UK) 'Selection Criteria for Dental Radiography', what is the most appropriate radiographic investigation for caries diagnosis at this visit?

Accepted Answer

Bilateral posterior bitewing radiographs.

Answer

No radiographs are indicated at this visit.

Answer

A panoramic radiograph (OPT/OPG).

Answer

Periapical radiographs of all posterior teeth.

Question 5

A dental practice in the UK must register its use of X-ray equipment under IRR17. Which organisation is responsible for handling this registration?

Accepted Answer

Health and Safety Executive (HSE)

Answer

General Dental Council (GDC)

Answer

Care Quality Commission (CQC)

Answer

Public Health England (PHE)

Question 6

The 'Guidance Notes for Dental Practitioners on the Safe Use of X-ray Equipment' recommends a simplified two-tier system for rating the quality of radiographs. What are the two categories in this system?

Accepted Answer

Diagnostically Acceptable / Not Diagnostically Acceptable

Answer

Excellent / Poor

Answer

Acceptable / Unacceptable

Answer

Grade 1 / Grade 2