Quick answer
Dental X-rays use a very low dose of radiation, especially modern digital X-rays, and are considered safe when taken only when needed. The American Dental Association recommends that dentists decide how often to take X-rays based on each patient’s individual needs, not on a fixed schedule.
It’s completely reasonable to wonder about radiation when your dentist suggests X-rays. The short answer: dental X-rays are among the lowest-dose imaging tests in healthcare, and they reveal problems that are impossible to see with the naked eye.
Why do dentists take X-rays?
A visual exam only shows the surfaces of your teeth. X-rays let your dentist see:
- Cavities between teeth and under existing fillings
- Bone loss from gum disease
- Infections or abscesses at the root tip
- Impacted wisdom teeth and developing teeth in children
- Cysts and other problems in the jaw
How much radiation is involved?
The dose from a typical set of bitewing X-rays is very small, and digital sensors reduce exposure even further compared with older film. To put it in perspective, we’re all exposed to natural background radiation every day from the environment.
How often do you need dental X-rays?
There’s no one-size-fits-all schedule. Updated ADA guidance emphasizes that X-rays should be taken only when they’re likely to help with diagnosis or treatment. Someone with healthy teeth and no recent cavities may need them less often; someone with frequent decay, gum disease or new symptoms may need them more often.
Safety precautions
- Use of fast digital sensors that require less radiation
- Taking only the images that are needed
- Collimation, which narrows the beam to the area being examined
- Thyroid collars when appropriate, following current professional guidance
Dental X-rays during pregnancy
If you’re pregnant or might be, let your dentist know. Necessary X-rays can generally be taken safely during pregnancy with appropriate precautions, but routine images may be postponed. See our guide to dental care during pregnancy.
Key takeaways
- Dental X-rays use a very low dose of radiation.
- They reveal cavities, bone loss and infections you can’t see.
- How often you need them depends on your individual risk.
- Tell your dentist if you’re pregnant.
Frequently asked questions
How often should I get dental X-rays?
It depends on your age, oral health and risk of problems. Your dentist will recommend a schedule based on your individual needs.
Are digital X-rays safer than film?
Digital X-rays generally require less radiation than traditional film X-rays and produce images instantly.
Can I refuse dental X-rays?
You can discuss any concerns with your dentist. Without X-rays, some problems may go undetected, so your dentist can explain the benefits and risks for your situation.
Need a dentist in Charlotte?
Cusp Dental Group welcomes new patients at three offices: SouthPark, Blakeney and Steelecroft. Same-day emergency appointments are available.
Sources: ADA News: Dental X-ray radiation safety and recommendations · DentistryIQ: ADA updated X-ray guidance
This article is for general education and isn’t a substitute for a personal dental exam or professional advice. If you have pain, swelling or a dental injury, contact a dentist promptly.
