Radiography

Question 1

List 4 types of radiographs used in orthodontics

Answer 1

Orthopantomogram

Cephalometric

Periapical

Occlusal

Question 2

Why is is Orthopantomogram used

Answer 2

Overall view of all the teeth, good for pre treatment to check for anomalies and root lengths

Question 3

Why is a Cephalometric used

Answer 3

Taking measurements of the angles of the teeth for complex malocclusions
and skeletal patterns.

Question 4

Why is Occlusal used

Answer 4

Check impacted canines
Help determine the position using parallax
technique
Check root lengths

Question 5

What must be completed prior to prescribing and taking a radiograph

Answer 5

Medical history

Clinical examination

Justification to take the radiograph

Question 6

What is justification

Answer 6

All IRMER practitioners are required by law to justify (explain the reason for taking) every radiograph that they take.
The justification process is the responsibility of the IRMER Practitioner – the medical or dental practitioner who takes the responsibility for an individual medical exposure.

Question 7

What is optimisation

Answer 7

Quality assurance in dental radiography should ensure that optimum diagnostic information can be obtained from radiographs while radiation doses to patients and staff are kept as low as reasonably practicable - ALARP .
The diagnostic images produced by the facility are of sufficiently high quality so that they consistently provide adequate diagnostic information and with the least possible exposure of the patient to radiation

Question 8

What is limitation

Answer 8

The various practical and physical methods available for reducing or limiting the dose to patients, and therefore limiting the risk, from orthodontic radiography can be summarised into four categories:
Equipment
Staff training
Radiographic technique
Clinical judgement on the need