Causes, care and answers to common questions.
X-ray examinations can show tooth roots and other tissues that the dentist cannot see by visual inspection alone. The test is selected when it helps answer a specific diagnostic or treatment planning question.
An X-ray can help evaluate cavities between teeth, roots, inflammation or bone changes, as well as the position of unerupted teeth. The type of image depends on which area and what problem needs investigation.
An X-ray image alone does not always establish a diagnosis; it is evaluated together with symptoms and clinical examination.
Cone beam computed tomography (CBCT) provides a three-dimensional image of the examined area. It can be useful for planning more complex treatments or assessing the spatial relationships of structures when ordinary images are insufficient.
3D examination is not necessary for every patient. The dentist evaluates whether the information obtained will influence decisions and selects the appropriate area to be examined.
X-ray examinations involve ionizing radiation, so they should be justified and performed only when necessary. Different types of tests may involve different exposure levels; ask the specialist ordering the test about specific benefits and risks.
If you are pregnant or suspect you might be, inform your dentist in advance. They will assess the necessity and choice of the examination individually.
Inform about any recent X-rays done elsewhere – sometimes it is helpful to show these to the dentist. Follow the specialist’s instructions before the test; you may need to remove certain metal jewelry or removable appliances from the examined area.
A small dental X-ray is intended for a limited area, while a panoramic X-ray shows a wider view of both jaws. Three-dimensional tomography can help when it is necessary to evaluate the position of structures in three dimensions. A broader or 3D examination is not automatically better – the one suited to the specific question is chosen.
Not in every case. The type of examination is chosen based on the patient’s condition and planned treatment.
Some changes may be painless, but the need for examination is decided individually.
It depends on their quality, age, and what has changed since the examination. Show them to your dentist.
This information is for patient education and does not replace an individual examination, diagnosis or treatment plan.
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