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CT Scan of the Upper Jaw (Maxillary Teeth) Without Contrast

Published: August 9, 2026Updated: August 16, 2026

A CT scan creates detailed images of the upper jaw and teeth to evaluate dental and surrounding bone structures without using contrast dye.

Quick summary

["This CT scan provides detailed images of the upper jaw, teeth, and nearby bone without contrast dye."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
87898-3
Short code
CT Teeth.max WO contr
Synonyms
CT Teeth.max WO contr
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

A maxillary CT scan is an X-ray-based imaging test that produces detailed pictures of the upper jaw, teeth, roots, and surrounding bone. It is performed without intravenous contrast dye.

Why might I need this test?

Your dentist, oral surgeon, or other clinician may order this scan to evaluate an impacted or damaged tooth, infection, a dental cyst, an injury, or the structure of the upper jaw before treatment.

How is the test performed?

You will lie in a CT scanner while the machine rotates around your head and takes many X-ray images. A computer combines the images into detailed cross-sectional views that a radiologist and your ordering clinician can review.

How do I prepare for the test?

No contrast dye is used, so there is typically no need for fasting or special contrast preparation. Follow your clinician's instructions, remove removable dental appliances or jewelry if instructed, and tell the imaging staff if you are pregnant or may be pregnant.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may show findings such as tooth decay, fractures, impacted teeth, infection, inflammation, cysts, or changes in the surrounding jawbone. The results are interpreted together with your symptoms, dental examination, and any other imaging or tests.

Short name

Maxillary CT Without Contrast

Frequently asked questions

Does this CT scan use contrast dye?
No. This version of the scan is performed without contrast dye, although other imaging tests used to evaluate the same area may include contrast.
Is a maxillary CT scan the same as a routine dental X-ray?
No. A CT scan uses multiple X-ray images to create detailed cross-sectional views, so it generally provides more information than a standard two-dimensional dental X-ray.
Will I need someone to drive me home?
Usually not, because no contrast dye or sedation is involved. You can generally resume your normal activities immediately unless your clinician gives you different instructions.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy