Oral and Maxillofacial Radiology

Imaging Methods and When They Are Used

Periapical radiographs focus on a single tooth or a small area; they may be used when root-canal anatomy, apical lesions or decay under restorations are suspected.

CBCT scans are planned with a low-dose profile; the field of view can be narrowed so that only the treatment region is covered.

In temporomandibular joint assessment, comparing open and closed positions may add information on disc position and condylar shape.

When a jaw fracture is suspected after trauma, regional tomography may be requested in addition to a panoramic image if the clinician considers it necessary.

Occlusal and lateral cephalometric films may play a complementary role in orthodontic or orthopaedic planning.

Reporting and Clinical Integration

Radiological findings are shared with the dentist or surgeon in a structured report; measurements may be stated in millimetres.

In implant planning, bone height, width and density are assessed on CBCT; the sinus floor and the path of the inferior alveolar nerve are marked.

The distance of impacted wisdom teeth (20) to neighbouring tooth roots, the mandibular canal and the sinus cavity can be analysed in three dimensions to support safer surgical planning.

Imaging results alone do not determine treatment; the patient’s concerns, clinical examination and laboratory findings are interpreted together.

Digital archiving allows comparison with previous exposures; lesion growth or bone change can be monitored.

Patient Safety and Preparation

In pregnancy, radiographic exposure may be postponed or limited with protective measures; the decision is made in discussion between clinician and patient.

Metal prostheses, orthodontic brackets or facial piercings may create artefacts that affect image quality; this is noted in the report.

In some systemic conditions or when anticoagulants are used, additional consultation may be required for a biopsy planned after imaging.

In children, dose optimisation and keeping the imaging field as small as possible are priorities; guardians are informed.

Radiation dose is kept as low as reasonably achievable under the ALARA principle; the benefit–risk balance is assessed separately for each case.

Follow-up and Second Opinion

Follow-up imaging after implant placement to check osseointegration and screen for complications may be planned according to clinical indication.

For lesions suggestive of cyst or tumour, periodic size comparison may help monitor treatment response.

Digital images from previous centres may be reviewed in DICOM format; the need for a repeat exposure is assessed case by case.

Radiological consultation forms part of pre-treatment risk–benefit analysis; alternative imaging options may be discussed with the patient.

For second-opinion requests, existing images may be reinterpreted; additional exposure is suggested only when a clinical gap remains.