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How safe are dental X-rays?

November 12th, 2025

Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes and our staff rely on digital X-rays to help us diagnose oral conditions and process images at incredibly high speeds. You can also view digital X-rays in real time while we examine your mouth with an intraoral camera and upload the images to a software program. A chairside computer monitor lets you see these images as we refine areas of concern to ensure an accurate diagnosis.

But are dental X-rays safe?

Yes! They emit 80 percent less radiation than exposure-type X-rays and provide detailed images to improve diagnosis and treatment. We can now detect dental problems in their earliest stages without subjecting you to unnecessary radiation. The amount of radiation released by digital X-rays is “negligible,” which means the amount is so small, that it can be safely disregarded.

Safe enough for children and pregnant women, digital X-rays detect microscopic pitting in tooth enamel and other abnormalities in the oral tissues that might have remained undetected with traditional X-rays. When Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes and our staff discover dental caries in their earliest stages, we can initiate treatment measures that will effectively prevent cavity development, tooth decay, and potential tooth loss.

Patient appointment lengths are shortened with digital X-rays as well, because images are immediately viewable and do not require the exposure time associated with old-style X-rays.

How Digital X-Rays Differ from Traditional X-Rays

Instead of using cardboard-contained film, we insert a small sensing device about the size of a pen in your mouth and engage the digital X-ray machine by manually manipulating control buttons. Within seconds, images appear on the monitor that can later be stored in your file or sent to another doctor for further examination.

The increased resolution afforded by digital X-rays means that patients are able to understand the seriousness of their dental issues better, and are more inclined to follow through with procedures recommended by Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes.

Safer, Better and Faster

For detection of cancerous tumors in their early states, digital X-ray technology offers vast improvements over film X-rays because of its cutting-edge image processing capability. Early detection of oral cancer and dental caries is the best way to prevent any type of oral health problem from exceeding the treatable stage.

The Safety of Dental X-Rays

November 5th, 2025

An article was released to the public stating that dental X-rays contribute to a type of brain cancer. After reading an article like this, your first thought may be to avoid dental X-rays, but you may want to hold off on that quick judgment. As with any treatment we offer at Pediatric Dental Health Associates, Ltd, education is your most valuable tool in deciding what is best for you.

How often dental X-rays are taken is based on risk for infection, physical symptoms, and clinical findings. The American Dental Association (ADA) is a governing body over the dental profession. The ADA states, “ . . . healthy adults receive routine mouth X-rays every two to three years. Dental X-rays are recommended every one to two years for children and every 1.5 to three years for teens. Children often require more X-rays than adults because of their developing teeth and jaws and increased likelihood for cavities.”

A "caries risk category" often determines how often dental X-rays are taken. The most recent documented resource to determine a caries risk is Caries Management by Risk Assessment (CAMBRA). This was adopted by the ADA and is used by dental professionals giving interval recommendations for X-rays.

With knowledge of your risk for dental infection, you will be informed by Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes of the interval at which dental X-rays should be taken. You can rest assured that the standards published by the ADA have been researched extensively and are there to protect your personal health and safety.

Dental X-rays are most commonly digital, which significantly reduces exposure. There is more radiation exposure from the sun or in an airplane than in a dental X-ray. It is common practice to use a lead apron with a thyroid collar for protection during X-ray exposure.

Having a cavity means having an active, potentially harmful infection. Diagnosing such infection with minimal exposure through digital dental X-rays at our Chicago office does more good than harm.

Tooth Worms? The History of Cavities and Tooth Fillings

October 29th, 2025

Scientists have discovered tooth decay in specimens that are more than 15,000 years old. The ancients once thought that cavities were caused by something called “tooth worms” … Eew! They didn’t exist, of course, but how else could humans explain the holes that cavities make in teeth?

The appearance of cavities on a widespread basis is often traced to the rise of farming. The new diet filled with grains and carbs made our mouths a haven for cavity-causing bacteria. As we added more sugar to our diets, our teeth got worse.

The “tooth worm” idea didn’t completely disappear until the 1700s when scientists finally began to understand the process of dental caries. Once that part of the puzzle was solved, they began focusing on filling existing cavities and preventing new ones.

Dental Fillings Come of Age

Many different materials, including beeswax, cork, aluminum, tin, and even asbestos, have been used to fill the holes caused by dental decay. Sometime in the mid-1800s, however, dentists began to use metal fillings such as gold, platinum, silver and lead amalgams.

The amalgam we use today is mixed from liquid mercury, silver, tin, copper, zinc, and other metals, but some patients still like the look of a gold filling. Newer options include composite-resin fillings, which are made from a tooth-colored mixture of plastic resin and finely ground glass-like or quartz particles that form a durable and discreet filling. Porcelain or ceramic fillings are natural in color, but more resistant to staining.

Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes can help decide which filling is best for you, based on cost as well as your dental and lifestyle needs. You may not have “tooth worms,” but if you have cavities, contact our Chicago office so we can take the proper action to protect the health of your mouth.

Easing the Teething Blues

October 22nd, 2025

Every moment of your baby’s first year of life is precious, since every day your child grows a little, develops new skills, and discovers new things. Most of it is wonderful, but parents don’t like to see their babies in pain. That’s why teething can be such a hard experience. However, you can take steps to make it easier for you and your baby.

What to Expect

Most babies begin teething around the age of six months, when the lower central incisors start to appear. Shortly after this time, the upper central incisors poke through, followed by the lateral incisors, first molars, canines, and second molars. Unfortunately, you’ll probably know that your baby is teething not because you see these teeth come in, but because your baby will be in discomfort. These are some of the signs to watch for when you’re expecting your baby to begin teething.

  • Tender and sore gums
  • More drooling than before
  • Being crankier than usual
  • Chewing on hard objects

What You Can Do

As a parent, you want to do everything you can to make your child more comfortable. These are some approaches that Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes and our team recommend:

  • Take a clean moistened wash cloth or use your own washed finger to rub your baby’s gums and provide relief due to the pressure.
  • Provide a firm rubber teething ring for your baby to use, but don't use the type that is filled with liquid.
  • Use a bottle. A bottle filled with cold water can be soothing. Don’t give your baby formula, milk, or juice constantly because the sugar can cause tooth decay.
  • Medications can help for extreme crankiness. Infant Tylenol is an example, but it’s best to check with your pediatrician before giving your baby medications.

You might also want to take special care to dry the drool. It’s not just to keep yourself and your baby dry. Keeping your baby’s skin dry can help prevent irritation.

When to Visit Us

Once your child’s first tooth comes in, it’s time to start thinking your baby’s first trip to our Chicago office. The American Dental Association suggests that you bring your child to the dentist within six months of the appearance of the first tooth, or at about one year of age. Drs. Joanne Oppenheim, Marilia Montero, and Mary J. Hayes can do a quick check for tooth decay, and we’ll make sure you know how to take care of your child’s new teeth.