Bitewing or Periapical X-Ray: Which Part of the Tooth Does It Show?

When the dentist recommends an X-ray, ask for the view’s name and the question it will help answer. The image type may be unfamiliar even if you have had dental X-rays before.

Compare the view

What to clarify	Bitewing	Periapical
Which part is emphasized?	Crown portions of upper and lower teeth on the same image.1	The tooth’s root-tip region.1
How is the image taken?	An image from inside the mouth.1	An image from inside the mouth.1
What should I ask?	What the dentist needs to see in this view.	Why the root-tip view is needed for this tooth.

Timing depends on your dental needs

You may not need X-rays at every visit. The dentist considers your history, examination, current oral health, disease risk and symptoms when deciding. Ask how those details led to the recommendation.²

If a previous dentist has images, ask about forwarding them. Your new dentist may be able to use those copies when assessing what additional imaging is needed.²

Write the dentist’s explanation beside the view’s name. If you receive an estimate for several images, request a cost explanation separately from the clinical reason for taking them.

Is It My Breath? includes visit-script cards. Use them to organize questions about your dental examination and proposed care. See the book.