Dental X-rays are safe for kids. Digital X-rays used in pediatric dentistry today emit 80 to 90% less radiation than traditional film X-rays, and a single bitewing image produces approximately 1 to 5 microsieverts of radiation, which is less than a few hours of the natural background radiation every person absorbs just by being alive. The American Dental Association (ADA), the American Academy of Pediatric Dentistry (AAPD), the U.S. Food and Drug Administration (FDA), the American Association of Orthodontists (AAO), and more than 80 health care organizations in the Image Gently campaign all endorse dental X-rays as safe for children when clinically indicated. Below, we break down exactly how much radiation dental X-rays produce, how that compares to everyday exposures, what has changed in dental X-ray safety guidelines, and what protections your child receives at every imaging appointment.
Are Dental X-Rays Safe for Kids and What the Evidence Shows
Dental X-rays are safe for kids because the radiation dose from modern digital imaging is extremely small and well within established safety limits. The United States Nuclear Regulatory Commission (NRC) estimates that the average American absorbs approximately 6,200 microsieverts (6.2 millisieverts) of radiation per year from all sources combined, including natural background radiation from the sun, soil, and air. A single digital bitewing X-ray adds approximately 1 to 5 microsieverts to that total. A full set of four bitewing X-rays adds approximately 4 to 20 microsieverts, which is less than one day of the natural background radiation that everyone receives regardless of whether they visit a dentist.
The safety of pediatric dental X-rays is supported by decades of research and the endorsement of every major dental, medical, and public health organization. In 2024, an expert panel convened by the ADA Council on Scientific Affairs reviewed nearly 100 articles, guidance documents, and regulations related to dental radiography. The panel concluded that modern digital X-ray equipment produces radiation so low that lead aprons and thyroid collars are no longer necessary to shield patients during dental imaging. This finding applies to all patients, including children, pregnant women, and individuals with special health care needs.
The AAPD endorsed the same conclusion in its 2024 Reference Manual update, confirming that patient shielding during dental X-rays is no longer required for infants, children, and adolescents. These updated guidelines reflect the reality that digital X-ray technology has advanced to the point where the radiation dose from dental imaging is negligible compared to everyday environmental exposure.
How Much Radiation Do Dental X-Rays Give Off
Dental X-rays give off between 1 and 30 microsieverts of radiation per image, depending on the type of X-ray being taken. Radiation is measured in microsieverts (abbreviated as μSv), a unit that quantifies how much energy from radiation the body absorbs. The lower the microsievert number, the smaller the dose.
A digital bitewing X-ray, the most common type used during routine pediatric dental checkups, produces approximately 1 to 5 microsieverts per image. A periapical X-ray, which captures the full length of a tooth from crown to root tip, produces approximately 1 to 8 microsieverts. A panoramic X-ray, which captures a broad view of the entire mouth and both jaws in a single image, produces approximately 4 to 30 microsieverts. A study published in the Journal of Personalized Medicine examined 4,455 intraoral radiographs taken in children and adolescents and measured an average effective dose of just 0.77 microsieverts per bitewing image.
To understand how small these numbers are, it helps to compare them to the radiation you encounter in daily life without thinking about it.
How Do Dental X-Rays Compare to Everyday Radiation
Dental X-rays compare favorably to everyday radiation sources because they produce far less exposure than many common activities. The National Council on Radiation Protection and Measurements (NCRP) estimates that natural background radiation from the sun, soil, radon in the air, and trace radioactive elements in food exposes every person to approximately 8 to 10 microsieverts per day. A single digital bitewing X-ray produces less radiation than half a day of simply existing on Earth.
| Radiation Source | Approximate Dose | Context |
|---|---|---|
| Single digital bitewing X-ray | 1 to 5 μSv | Less than a few hours of natural background radiation |
| Full set of 4 bitewing X-rays | 4 to 20 μSv | Less than one full day of natural background radiation |
| Panoramic dental X-ray | 4 to 30 μSv | Comparable to 1 to 3 days of natural background radiation |
| One day of natural background radiation | ~8 to 10 μSv | Unavoidable daily exposure from sun, soil, air, and food |
| Cross-country flight (New York to Los Angeles) | ~30 μSv | Cosmic radiation at cruising altitude; more than a dental X-ray |
| Chest X-ray (medical) | ~100 μSv | Roughly 20 to 100 times more radiation than a dental bitewing |
| Average annual exposure (all sources, U.S.) | ~6,200 μSv | Dental X-rays contribute a tiny fraction of this annual total |
Sources: National Council on Radiation Protection and Measurements (NCRP); U.S. Nuclear Regulatory Commission (NRC); American Dental Association (ADA); Journal of Personalized Medicine (Jena University Hospital study, 2023); Cedars Sinai.
European Commission data shows that dental X-ray procedures account for 39% of all X-ray examinations performed in health care but contribute only 0.3% of the total collective radiation dose. The volume of dental imaging is high, but the radiation per image is among the lowest of any diagnostic procedure in medicine.
Why Digital X-Rays Are Safer Than Film
Digital X-rays are safer than film X-rays because digital sensors are far more sensitive to radiation, which means they need significantly less energy to produce a clear, diagnostic-quality image. This increased sensitivity is the primary reason digital X-rays reduce radiation exposure by 80 to 90% compared to traditional film radiography.
Film X-rays required a specific minimum amount of radiation to expose the film properly, and that amount could not be reduced without compromising image quality. Digital sensors capture the same diagnostic information with a fraction of the radiation because the sensor converts X-ray energy into an electronic signal that a computer can amplify, enhance, and sharpen. The result is a clearer image produced with less radiation.
Digital technology also eliminates the chemical processing step that film required. Film X-rays needed to be developed in a darkroom using chemical baths, which introduced variables that could degrade image quality and occasionally required retakes. Digital images appear on a computer screen within seconds of capture. Immediate review means your child’s dentist can confirm the image quality on the spot and avoid unnecessary repeat exposures.
Modern digital X-ray systems also allow the dentist to adjust brightness, contrast, and magnification on the captured image without taking a new X-ray. This ability to digitally enhance a single image further reduces the need for additional exposures. The combination of lower radiation per image, instant review, and digital enhancement tools makes modern pediatric dental imaging one of the safest diagnostic processes in all of health care.
What Has Changed in Dental X-Ray Safety
The most significant recent change in dental X-ray safety is the 2024 ADA recommendation that lead aprons and thyroid collars are no longer necessary during dental X-ray procedures. This recommendation, published in the Journal of the American Dental Association on February 1, 2024, was developed by an expert panel convened by the ADA Council on Scientific Affairs with support from medical physicists at the FDA. The panel reviewed nearly 100 research articles, guidance documents, and regulatory publications before reaching its conclusion.
The reason behind this change is straightforward: modern digital X-ray equipment produces radiation so low and so precisely targeted that the additional shielding from a lead apron or thyroid collar does not provide meaningful added protection. In fact, the panel found that lead aprons and thyroid collars can sometimes block the primary X-ray beam, which forces the dentist to retake the image and exposes the child to more radiation than the original X-ray would have delivered on its own.
The AAPD endorsed this same change in its 2024 Reference Manual, confirming that patient shielding during dental X-rays should be discontinued as routine practice for infants, children, adolescents, and individuals with special health care needs. The American Academy of Oral and Maxillofacial Radiology (AAOMR) had already issued consistent guidance in 2023.
Parents who remember wearing a heavy lead vest at every dental visit may find this change surprising. The key point is that the technology has improved so dramatically that the radiation itself has become the smallest part of the safety equation. Proper beam collimation, correct patient positioning, and clinical justification for every image now provide far more meaningful protection than a lead apron ever did. Many pediatric dental practices still offer lead aprons as an optional comfort measure for families who prefer them, and that choice is perfectly fine.
How Pediatric Dentists Keep Your Child Safe During X-Rays
Pediatric dentists keep your child safe during X-rays by following the ALARA principle and using a combination of technology, technique, and clinical judgment to minimize radiation exposure to the lowest possible level. ALARA stands for “As Low As Reasonably Achievable,” and it is the governing safety standard for all radiographic imaging in dentistry.
In practice, ALARA means your child’s dentist applies the following protections at every imaging appointment in our Yorktown Heights office:
- Every X-ray is prescribed based on a clinical examination first; no image is taken as a routine formality or without a specific diagnostic purpose
- Previous X-ray records are reviewed before every appointment to avoid duplicating images that are still diagnostically current
- Digital sensors are used exclusively, reducing radiation exposure by 80 to 90% compared to film
- Rectangular collimation restricts the X-ray beam to only the area being imaged, reducing scatter radiation by approximately 60%
- Pediatric-sized sensors are selected to fit comfortably in smaller mouths, reducing the chance of retakes caused by improper positioning
- Exposure settings are adjusted for each child’s size and age, so a smaller child receives a lower dose than a larger child or adult
- The X-ray machine is activated from behind a protective barrier, and the exposure time per image is less than one second
These protections work together so that each X-ray delivers the minimum radiation necessary to produce a diagnostically useful image. The approach is cumulative: no single protection eliminates all risk, but the combination of all protections reduces exposure to a level that is orders of magnitude below any threshold of concern. During routine preventive care visits, your child’s dentist reassesses whether new X-rays are needed or whether existing images are still sufficient.
How Many Dental X-Rays Are Safe for a Child in a Year
There is no fixed maximum number of dental X-rays that is considered unsafe per year because the radiation dose from modern digital dental imaging is far below any established safety threshold. The NRC has set a public exposure limit of 100 millirem (equivalent to 1,000 microsieverts) of man-made radiation per year, above and beyond the natural background radiation that everyone absorbs. To reach that limit through dental X-rays alone, a child would need to receive more than 100 individual dental X-rays in a single year. No pediatric dentist would ever prescribe anywhere close to that number.
In a typical year, a child at moderate risk for cavities receives two sets of four bitewing X-rays (eight images total), producing a combined dose of approximately 8 to 40 microsieverts. That total represents less than 1% of the NRC’s annual man-made exposure limit and less than 1% of the 6,200 microsieverts the average American absorbs from all radiation sources annually. A dental cleaning visit that includes bitewing X-rays adds a negligible amount of radiation to your child’s yearly total.
The AAPD recommends that X-ray frequency be determined by each child’s individual caries risk assessment, not by a fixed calendar schedule. Children at lower risk for decay may need bitewing X-rays only every 12 to 24 months. Children at higher risk may benefit from imaging every 6 to 12 months to catch interproximal cavities before they spread.
Is It Safe for a Toddler to Get Dental X-Rays
It is safe for a toddler to get dental X-rays when a clinical reason supports the need. Most toddlers do not receive routine X-rays because their back teeth have not yet come into contact. Toddlers who have experienced dental trauma, who show signs of decay, or whose teeth are in tight contact earlier than usual may need X-rays to evaluate what is happening below the surface. The AAPD and the USPSTF both support the use of dental radiographs for young children when clinically indicated, and digital X-ray technology keeps the radiation dose extremely low even for the smallest patients.
Should Parents Worry About Cumulative Radiation from Dental X-Rays
Parents should not worry about cumulative radiation from dental X-rays because the total lifetime dose from dental imaging remains a tiny fraction of overall radiation exposure. Every person on Earth accumulates radiation from natural sources throughout their entire life. By the age of 10, a child living in the United States has already absorbed approximately 62,000 microsieverts of background radiation from the sun, soil, radon, and food. A decade of annual dental X-rays at the pediatric dentist adds fewer than 400 microsieverts to that total, which represents less than 1% of the background radiation absorbed over the same period.
The concern about cumulative radiation is understandable, especially for children whose developing tissues are more sensitive to radiation than adult tissues. Children have rapidly dividing cells in their bones, organs, and brain, and rapidly dividing cells absorb radiation differently than mature, stable cells. This biological reality is exactly why every pediatric dental X-ray protocol is designed around minimizing exposure. The ALARA principle, digital sensors, rectangular collimation, and clinical justification for every image all exist specifically because the dental profession takes pediatric radiosensitivity seriously.
Research confirms that the actual risk is negligible at dental X-ray dose levels. According to Cedars Sinai, the radiation exposure from a standard dental X-ray is comparable to a few days of natural background radiation. Tooth decay that goes undiagnosed because a parent declined X-rays poses a far greater health risk to a child than the radiation from the imaging that would have detected it.
What If You Are Worried About Your Child Getting X-Rays
If you are worried about your child getting X-rays, the most productive step is to discuss your concerns with your child’s pediatric dentist before the appointment. Every parent has the right to understand why an X-ray is being recommended, what diagnostic information it will provide, and how that information will change the treatment plan. A pediatric dentist can explain the clinical reasoning behind each image and help you make an informed decision.
It is also helpful to understand what can happen when X-rays are skipped entirely. Without radiographic imaging, cavities between teeth can grow silently until they reach the pulp (nerve) of the tooth. At that point, a cavity that could have been treated with a small filling may require a baby root canal, a dental crown, or even extraction.
Infections that develop at the root tip of a tooth can spread into the surrounding bone and cause pain, swelling, and a dental emergency. Developmental problems like impacted teeth, congenitally missing permanent teeth, or jaw growth irregularities can go undetected until they become significantly more difficult to treat.
The radiation risk from a digital dental X-ray is far smaller than the clinical risk of an undiagnosed condition. We encourage parents to ask every question they have. Informed, confident parents make the best decisions for their children.
Why the Benefits of Dental X-Rays Outweigh the Risks
The benefits of dental X-rays outweigh the risks because the diagnostic information they provide prevents far more harm than the negligible radiation they produce. A visual exam can only evaluate the visible surfaces of the teeth and gums. Dental X-rays extend that evaluation to the internal structures that determine your child’s long-term oral health.
Here are the conditions that dental X-rays detect early, often before any symptoms appear:
- Cavities forming between teeth where a visual exam and even flossing cannot reach
- Infections developing at the root tip of a tooth before they spread to surrounding bone
- Permanent teeth developing in the wrong position or failing to develop at all
- Extra teeth that could block the normal eruption of permanent teeth
- Bone loss around the teeth that may indicate early periodontal changes
- Jaw growth patterns that may require orthodontic planning or early intervention
- Damage from trauma that is invisible on the tooth surface but affects the root or surrounding bone
The CDC reports that approximately 50% of children aged 6 to 9 have already experienced at least one cavity. Many of those cavities develop in interproximal areas that only an X-ray can reveal. Catching a cavity at the enamel stage means a small, simple filling. Missing that same cavity until it reaches the dentin or pulp means a larger restoration, greater expense, and more discomfort for the child. Cavity prevention depends on the ability to see where decay is forming, and X-rays are the only tool that provides that visibility between teeth.
Dental X-rays also serve as a baseline record that tracks your child’s development over time. Each set of images is compared against previous sets to identify changes that a single image alone might not reveal. Hidden cavities, shifting tooth positions, and bone-level changes become visible in the comparison.
Combined with regular cleanings, fluoride treatments, and sealants, pediatric X-rays are one layer in a multi-layered preventive strategy that keeps your child’s smile healthy at every stage.
Frequently Asked Questions
What Age Should Kids Get X-Rays at the Dentist
Kids should get X-rays at the dentist when their back teeth begin to touch and the surfaces between them can no longer be examined visually, which typically happens around age 3. The AAPD recommends that the timing of the first X-ray be based on each child’s individual development and risk factors, not on a fixed age. A child whose back teeth touch early may need X-rays sooner, and a child whose teeth have natural spacing may not need them until later. Schedule your child’s first visit by age one so that their development can be monitored and X-rays can be timed appropriately.
Do Children Need X-Rays at Every Dental Visit
Children do not need X-rays at every dental visit. The ADA and AAPD both recommend that X-rays be prescribed based on clinical need, not as a routine part of every appointment. Your child’s dentist evaluates risk factors, performs a clinical exam, and reviews previous images before deciding whether new X-rays are warranted. Low-risk children may go 12 to 24 months between sets. High-risk children may need imaging more frequently.
Can Dental X-Rays Detect Problems Other Than Cavities
Dental X-rays can detect many problems other than cavities. They reveal infections at the tooth root, cysts or tumors in the jawbone, impacted permanent teeth, congenitally missing teeth, extra teeth, bone loss, jaw fractures, and developmental abnormalities that affect how the teeth and jaws grow. X-rays are also essential for planning orthodontic treatment because they show the position and angle of every developing tooth beneath the gum line.
Are Dental X-Rays Safe During Pregnancy
Dental X-rays are safe during pregnancy. The 2024 ADA expert panel confirmed that its updated recommendations, including the discontinuation of lead aprons and thyroid collars, apply to all patients regardless of health status, including pregnant women. The radiation dose from a dental X-ray is extremely low and directed at the mouth, far from the uterus. The ADA, the American College of Obstetricians and Gynecologists, and the AAPD all support dental X-rays during pregnancy when clinically indicated.
What Is the Image Gently Campaign
The Image Gently campaign is a coalition of more than 80 health care organizations, including the ADA, dedicated to promoting safe pediatric imaging practices worldwide. The campaign encourages all health care providers to use the lowest radiation dose necessary for each child, avoid imaging that does not change the diagnosis or treatment plan, and use child-sized equipment and exposure settings rather than adult protocols. Image Gently reinforces the ALARA principle and provides educational resources for both providers and parents.
Wrapping It Up
Dental X-rays are one of the safest diagnostic tools in pediatric health care. Digital technology has reduced radiation exposure by 80 to 90% compared to film, and the ADA, AAPD, FDA, and more than 80 other organizations all confirm that dental X-rays are safe for children of all ages. The 2024 ADA guideline update confirmed that radiation from modern dental imaging is so low that lead aprons and thyroid collars are no longer necessary. Every X-ray at a pediatric dental office is prescribed based on clinical need, taken with protective protocols, and reviewed before additional imaging is considered.
If you have questions about dental X-ray safety or want to schedule your child’s next preventive care visit, contact Cohen Family Smiles at 914-245-2965. We serve families in Yorktown Heights and the surrounding communities with gentle, expert pediatric dental care and the latest digital imaging technology.
