Are Dental X-Rays Safe? What the ADA’s New Rules Mean for You
It is one of the questions I hear most: “Do I really need this X-ray, and is it safe?” It is a fair question, and the honest answer is better news than most people expect.
I have practiced dentistry for over 20 years, and X-rays have changed enormously in that time. The American Dental Association recently updated its guidance on dental X-rays for the first time since 2012. A lot has changed in a decade, and most patients have not heard any of it. Let me walk you through what is actually true about dental X-rays, how much radiation is really involved, and why the 3D scan we use tells us so much more than a flat X-ray ever could.
Short version: modern dental X-rays use far less radiation than they used to, and a good scan can reveal things about your health that have nothing to do with your teeth.
The ADA Just Updated Its X-Ray Rules (For the First Time Since 2012)
The biggest change is the X-rays themselves. We now use digital radiography instead of old-fashioned film. A small sensor goes in your mouth, or a sensor rotates around your head, and the image is captured digitally. The result: much less radiation than the X-rays you may remember from years ago.
That matters for you, and it matters for us. Every X-ray we take is potential exposure for our team too, so lower radiation is a genuine advance for everyone in the room. Radiation from dental imaging is significantly lower than it has ever been.
How Often Should You Actually Get Dental X-Rays?
Here the ADA is deliberately vague. Their guidance is to take X-rays “when they are clinically necessary.” So what does that actually mean?
It means we take them when there is a reason, such as:
- A history of cavities
- A history of gum disease
- A specific concern, like sensitivity or a dark spot on a tooth
- Something we notice while looking in your mouth that we need to see beneath the surface
There is no fixed “every six months” rule anymore. It is based on your needs. And the reason we need them at all is simple: without an X-ray, I am working with my eyes covered. I cannot see what is happening under the gums, inside the root, or inside the tooth. An X-ray lets me actually see it.
How Much Radiation Is In a Dental X-Ray, Really?
This is the part that reassures most people. The easiest way to understand dental radiation is to compare it to the natural background radiation we all get just from living day to day, from the sun and the world around us.
A small in-mouth X-ray is less than a single day of ordinary living. Even a full 3D scan is roughly a week of it, less than a cross-country flight.
You would not want a 3D scan every single visit, and we would not take one without a reason. But when there is a reason, the exposure is genuinely modest, and what we learn from it can be significant.
Wait, Why Isn’t My Dentist Using a Lead Apron Anymore?
A lot of patients notice this and wonder if something is wrong. It is actually the opposite.
The lead apron is no longer recommended
With today’s low-radiation digital X-rays, the heavy lead apron is not needed. Worse, it often gets in the way of the X-ray, which means we have to retake the image, adding exposure. Research also found that radiation can get trapped underneath the apron and bounce back, giving you more exposure than if you had not worn it at all. Skipping it is the safer, more modern choice.
Why We Take a Cone Beam CT at Total Care Dental
Here is where it gets interesting, and where a good scan does far more than check for cavities. Most people have had a flat, 2D panoramic X-ray, the kind that sweeps around your head. It is useful, but it only shows so much. A cone beam CT gives us a true 3D view, and that changes what we can see.
A flat picture
- Jaw joints, sinuses, and teeth
- A single flat view
- Nothing forward or back, no depth
- Small details hide behind others
The full picture
- Each tooth in three dimensions
- Your airway and breathing space
- Tongue position and how you sleep
- Jaw joints (TMJ) in detail
- Hidden infections around old root canals and in the jawbone
That airway view is one of my favorites. If the tongue sits too low and the breathing space is crowded, it can be a clue about why someone wakes up tired or does not sleep well. We can look at a jaw joint and see whether it is a joint problem or a muscle one. We can spot a hidden infection at the base of an old root canal that a flat X-ray would completely miss. None of that is visible on a standard 2D image.
One scan, fewer X-rays
Because a cone beam CT shows so much at once, it can take the place of several separate X-rays. It cannot catch tiny cavities between teeth, so we still use small in-mouth images for those, but it answers a remarkable number of questions in a single, quick scan.
A Scan Is Only as Good as the Dentist Reading It
This is the part that matters most, and it has nothing to do with the machine. A cone beam CT captures an enormous amount of information, but that information only helps you if the dentist knows how to read it. Airway, jaw joints, hidden infections, bone structure, it is all there, but someone has to recognize what they are looking at.
So the real question is not just “should I have this scan,” but “who is interpreting it?” That is a big part of what we do differently. Curious how X-rays connect to the bigger picture? Here is how we use 3D imaging to save teeth other dentists say can’t be saved.
What Happens at Your New Patient Exam
When you come in, we do not just look at the one tooth that is bothering you. We look at the whole picture, because your mouth and your overall health are connected. Your comprehensive exam includes:
Your first visit includes
- A low-dose 3D cone beam scan (CBCT) for a full structural view of your teeth, jaw, and airway
- Standard tooth images where they are needed, and only where they are needed
- Dental photographs and a comprehensive gum exam
- A jaw joint and airway, sleep, and breathing evaluation
- A clear report of findings in plain language, with no pressure
The Bottom Line
Are dental X-rays safe? Yes. Modern digital radiography uses very little radiation, you no longer need a lead apron, and X-rays are taken based on your needs rather than a fixed schedule. And when we do take a 3D scan, it often tells us far more about your health than you would expect, as long as someone knows how to read it.
A dental X-ray is a small amount of radiation for a large amount of insight. The key is having someone who knows how to use what it shows.
Dental X-Ray FAQs
Are dental X-rays safe?
Yes. Modern digital dental X-rays use very low levels of radiation, far less than older film X-rays. A single in-mouth X-ray is less than the natural background radiation you get from a normal day of living.
How often should I get dental X-rays?
There is no longer a fixed schedule. The ADA recommends X-rays when they are clinically necessary, based on your history of cavities or gum disease and any specific concerns, rather than automatically at every visit.
Do I still need a lead apron for dental X-rays?
No. With today’s low-radiation digital X-rays the lead apron is no longer recommended. It can interfere with the image and even trap radiation, so skipping it is the safer, more modern approach.
What is a cone beam CT and why does Total Care Dental use it?
A cone beam CT is a quick, non-invasive 3D scan taken while you stand. It shows each tooth in three dimensions plus your airway, jaw joints, and hidden infections, information a flat 2D X-ray cannot provide. It also reduces the need for several separate X-rays.
How much radiation is in a cone beam CT scan?
Roughly the equivalent of about a week of normal background radiation from daily living, and less than a cross-country flight. We only take one when there is a clinical reason to.
Dr. Michelle Jorgensen
Dr. Michelle Jorgensen is an author, speaker, teacher, biologic and holistic dentist, and health and wellness provider.
Dr. Michelle Jorgensen is also a Board Certified Traditional Naturopath and has received certifications as a Therapeutic Nutritional Counselor and a Certified Nutritional Autoimmune Specialist. She completed a Holistic Dental Mini-Residency and is pursuing ongoing training from experts around the world in health-related fields.
Dr. Jorgensen also teaches and coaches groups of dental professionals across the country through her Living Well Professionals training. They learn how to integrate dentistry with other health disciplines to provide an integrated, whole body approach to care.
