CT Scan of the mandible is a radiology exam which may be performed to examine the lower jaw in a non-invasive manner with the advantage of 3D reconstruction of the mandible. It is usually ordered by your dentist or head and neck surgeon.It helps in detection of mandibular fracture, infections, bone tumors or deformities.
Preoperative assessment for mandibular fractures after accidents or bone deformities.Evaluation of mandibular or teeth related neoplasm.Disorder of temporo-mandibular joint (TMJ) or complication of impacted teeth.
Pregnant women particularly in the first trimester to avoid harmful effects of ionization radiation on the fetus. It can be carried out for pregnant women only in critical situations after discussion of the potential risks , obtaining informed consent and using abdominal lead aprons.Patients who have a known allergy to the intravenous contrast media, patients with impaired renal functions should avoid contrast enhanced study but can perform routine non contrast study safely.
No preparation needed for the non-contrast study.Patient should be food fasting 4-6 hrs before the exam in case of contrast enhanced study only. Adequate hydration is needed and recent kidney function test should be available at the time of your examination.
No after care or precautions needed following non contrast enhanced study.In case of contrast enhanced study drinking plenty of water is advised to help to wash out the injected IV contrast material out of your body except if you are on fluid balance for renal or cardiac condition you may consult your physician and in case of lactating mothers it is advised to escape lactation for 24 hrs after the contrast injection.
In very rare cases some patients may experience contrast allergic reaction after IV contrast injection so if you have any previous history of allergy to IV contrast media it is safer to perform the exam without IV contrast.