May 28, 2023

X-Rays for Kids’ Teeth: When and How Often Do They Need Them?

Dental X-rays are an essential diagnostic tool used by dentists to identify potential issues, evaluate growth and development, and monitor oral health. Parents often wonder how often their children should get dental X-rays and whether they are safe for their little ones. This article addresses these concerns and provides a comprehensive guide on the frequency and necessity of dental X-rays for children.

How Do Dental X-Rays Work?

Dental X-rays, also known as radiographs, use a small amount of radiation to capture images of the teeth, bones, and soft tissues in and around the mouth. These images help dentists identify issues that may not be visible during a routine oral exam. The process involves placing a small sensor in the child's mouth, which captures the images and sends them to a computer for the dentist to review.

What Are Dental X-Rays Used For?

Dental X-rays have multiple uses and can help dentists identify several problems, including:

1. Tooth Decay

X-rays can reveal cavities and decay that may not be visible during a visual examination, especially when it occurs between teeth or beneath existing dental fillings.

2. Bone Loss

X-rays can reveal bone loss caused by gum disease or other factors, which can impact the stability of the teeth.

3. Tooth Development and Eruption

X-rays can help dentists track the growth and development of a child's teeth and identify any potential issues with how they are erupting.

4. Infections

X-rays can reveal infections at the root of a tooth or in the bone surrounding it.

5. Impacted teeth

X-rays can help identify impacted teeth, which are teeth that have not erupted and are trapped beneath the gum line.

6. Orthodontic Assessment

X-rays can help dentists plan for orthodontic treatment by revealing the position of teeth and the relationship between the upper and lower jaw.

Are They Safe?

While dental X-rays do involve a small amount of radiation exposure, the amount used is minimal and considered safe for children. Dentists take several precautions to ensure that exposure is as low as possible, including:

  • Using lead aprons and thyroid collars to shield the child's body from radiation.
  • Using modern, digital x-ray machines that produce significantly less radiation than traditional machines.
  • Taking X-rays only when necessary and tailoring the process to the individual child's needs.

Frequency of Dental X-Rays for Children

There is no one-size-fits-all answer to how often a child should get dental X-rays, as the frequency depends on the child's age, dental health, and individual risk factors. The American Dental Association (ADA) and the American Academy of Pediatric Dentistry (AAPD) provide guidelines for dental X-ray frequency, which are as follows:

1. Children with Primary (Baby) Teeth

A full set of X-rays may be taken once every 1-2 years, depending on the child's risk for tooth decay and other dental issues.

2. Children with a Mix of Primary and Permanent Teeth

A full set of x-rays may be taken every 1-3 years, depending on the child's risk factors and dental health.

3. Children with Permanent Teeth (Around Age 12 and Older)

A full set of x-rays may be taken every 2-3 years, with bitewing x-rays (which focus on the back teeth) taken every 1-2 years, again depending on the child's risk factors and dental health.


Dental X-rays play a crucial role in maintaining a child's oral health and should be performed as your child's dentist recommends. By understanding the purpose, safety, and frequency of dental X-rays, parents can make informed decisions about their child's dental care and ensure optimal oral health for years to come.

Are you looking for dentists in Chilliwack? Look no further than Maple Smiles Dentistry! Our state-of-the-art office is staffed by experienced dentists who are dedicated to providing you with the best possible care. Whether you need a routine cleaning or a more complex procedure, we have the expertise and technology to help you achieve a healthy, beautiful smile. Book an appointment today!

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