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Dental X-rays: The Inside Story

March 25th, 2026

We’re all friends here, so if you sometimes feel a bit nervous before your dental appointment, no judging! Ask us about any worries you might have. We are happy to explain procedures, equipment, and sedation options so you know just how safe and comfortable your experience can be. And if X-rays are a concern, we can put your mind at ease here as well.

What Exactly Are X-rays?

Sometimes patients feel reluctant about the process of imaging because X-rays are a kind of radiation. But the fact is, radiation is all around us. We are exposed to radiation naturally from our soil and water, sun and air, as well as from modern inventions such as cell phones, Wi-Fi, and air travel.

Why is radiation so common? Because matter throughout the universe constantly gives off energy, and the energy that is emitted is termed radiation. This radiation takes two forms—as particles (which we don’t need to consider!) and as traveling rays. This second type is known as electromagnetic radiation, created by photons traveling in regular waves at the speed of light.

We are exposed to electromagnetic radiation every day, because, whether we can see them or not, these different wavelengths and frequencies create various forms of light. Radio waves, microwaves, infrared, visible, and ultraviolet light, X-rays, and gamma rays are all part of the electromagnetic light spectrum.

Different types of radiation on this spectrum have different wavelengths and different frequencies, and produce different amounts of energy. Longer wavelengths mean lower frequencies and less energy. Because X-rays have shorter wavelengths and higher frequencies than, for example, radio waves and visible light, they have more energy.

How Do Dental X-rays Work?

An X-ray machine produces a very narrow beam of X-ray photons. This beam passes through the body and captures images of our teeth and jaws on special film or digital sensors inside the mouth (intraoral X-rays), or on film or sensors located outside the mouth (extraoral X-rays). These X-ray images are also known as radiographs.

Why are X-rays able to take pictures inside our bodies? Remember that higher energy we talked about earlier? This energy enables X-rays to pass through the softer, less dense parts of our bodies, which are seen as gray background in a radiograph. But some substances in our bodies absorb X-rays, such as the calcium found in our bones and teeth. This is why they show up as sharp white images in radiographs.  

There are different types of common dental X-rays which are used for a number of reasons:

  • Bitewing X-rays, which are used to check on the health of the back teeth.
  • Periapical X-rays, which allow us to look at one or two specific teeth from crown to root.
  • Occlusal X-rays, which show the entire arch of teeth in the upper or lower jaw.
  • Panoramic X-rays, which use a special machine to rotate around the head to create a complete two-dimensional picture of teeth and jaws.
  • Cone Beam Computed Tomography, an external device which uses digital images to create a three-dimensional picture of the teeth and jaws.

Why Do We Need X-rays?

If all of our dental conditions were visible on the surface, there would be no need for X-rays. But there are many conditions that can only be discovered with the use of imaging—infection, decay, a decrease in bone density, or injuries, for example, can show up as darker areas in the teeth or jaws. Among their many diagnostic uses, X-rays can help us find:

  • Cavities between teeth or under old fillings
  • Damage to the tooth’s pulp which might require root canal treatment
  • Injuries to teeth or roots after trauma
  • Abscesses, tumors, or other conditions that might be causing swelling or pain
  • Position and development of wisdom teeth
  • Ideal placement for implants
  • Health and density of the jaw and alveolar bone

X-rays can also serve an important preventative role, by discovering small problems before they become major ones.

How Do Dentists Make Sure Your X-rays Are As Safe As They Can Be?

First of all, the amount of radiation you are exposed to with a dental X-ray is very small. In fact, a set of bitewing X-rays exposes us to slightly less than the amount of radiation we are exposed to through our natural surroundings in just one day. Even so, Sandra Martin and our team are committed to making sure patients are exposed to as little radiation as possible.

Radiologists, the physicians who specialize in imaging procedures and diagnoses, recommend that all dentists and doctors follow the safety principal known as ALARA: “As Low As Reasonably Achievable.” This means using the lowest X-ray exposure necessary to achieve precise diagnostic results for all dental and medical patients.

The guidelines recommended for X-rays and other imaging have been designed to make sure all patients have the safest experience possible whenever they visit the dentist or the doctor. We ensure that imaging is safe and effective in a number of ways:

  • We take X-rays only when they are necessary.
  • We provide protective gear, such as apron shields and thyroid collars, whenever needed.
  • We make use of modern X-ray equipment, for both traditional X-rays and digital X-rays, which exposes patients to a lower amount of radiation than ever before.
  • When treating children, we set exposure times based on each child’s size and age.

And now that we’ve talked about some things you might like to know,

Please Let Us Know If . . .

  • You’re a new patient, with previous X-rays taken during regular exams or for specific procedures. Ask to have your older X-rays sent to our office. With digital X-ray technology, this transfer can be accomplished with e-mail! Having your dental history available lets us notice any changes that have taken place.
  • You’re pregnant, or think you might be pregnant. Even though radiation exposure is very low with dental radiographs, unless there is a dental emergency, dentists and doctors recommend against X-rays for pregnant patients.

X-rays play an important part in helping us make sure your teeth stay their healthiest. If you have any concerns, contact our Wake Forrest, North Carolina office. When it comes to making sure you’re comfortable with all of our procedures, including any X-rays that might be necessary, we’re happy to give you all the inside information!

Can children be at risk for periodontal disease?

March 25th, 2026

You want to check all the boxes when you consider your child’s dental health. You make sure your child brushes twice daily to avoid cavities. You’ve made a plan for an orthodontic checkup just in case braces are needed. You insist on a mouthguard for dental protection during sports. One thing you might not have considered? Protecting your child from gum disease.

We often think about gum disease, or periodontitis, as an adult problem. In fact, children and teens can suffer from gingivitis and other gum disease as well. There are several possible reasons your child might develop gum disease:

  • Poor dental hygiene

Two minutes of brushing twice a day is the recommended amount of time to remove the bacteria and plaque that cause gingivitis (early gum disease). Flossing is also essential for removing bacteria and plaque from hard-to-reach areas around the teeth.

  • Puberty

The hormones that cause puberty can also lead to gums that become irritated more easily when exposed to plaque. This is a time to be especially proactive with dental health.

  • Medical conditions

Medical conditions such as diabetes can bring an increased risk of gum disease. Be sure to give us a complete picture of your child’s health, and we will let you know if there are potential complications for your child’s gums and teeth and how we can respond to and prevent them.

  • Periodontal diseases

More serious periodontal diseases, while relatively uncommon, can affect children and teens as well as adults. Aggressive periodontitis, for example, results in connective and bone tissue loss around the affected teeth, leading to loose teeth and even tooth loss. Let Sandra Martin know if you have a family history of gum disease, as that might be a factor in your child’s dental health, and tell us if you have noticed any symptoms of gum disease.

How can we help our children prevent gum disease? Here are some symptoms you should never ignore:

  • Bleeding gums
  • Redness or puffiness in the gums
  • Gums that are pulling away, or receding, from the teeth
  • Bad breath even after brushing

The best treatment for childhood gum disease is prevention. Careful brushing and flossing and regular visits to our Wake Forrest, North Carolina office for a professional cleaning will stop gingivitis from developing and from becoming a more serious form of gum disease. We will take care to look for any signs of gum problems, and have suggestions for you if your child is at greater risk for periodontitis. Together, we can encourage gentle and proactive gum care, and check off one more goal accomplished on your child’s path to lifelong dental health!

When should a filling be replaced?

March 18th, 2026

There is no substitution for a natural healthy tooth. Dental fillings are intended to replace tooth structure and restore a tooth damaged by decay (a cavity) back to its normal function and shape. Silver (amalgam) and tooth-colored (composite) fillings last a long time, though they can develop decay when the integrity is compromised by open margins, fracture, or recurrent decay. In this blog, we discuss the signs and symptoms that indicate your filling may need to be replaced in order to prevent further complications.

Amalgam fillings are made of an alloy (mixed metals) that expands and contracts. They have no bonding properties, and so to place an amalgam filling, the hole in the tooth may need to be larger. Because of these two factors, fractures frequently occur. There are three types of cracks that are commonly associated. Craze lines are superficial with no treatment needed. Fractures extend along other parts of the tooth and may require a filling replacement or crown. Cracks extend toward the root and can require a root canal and crown or, if too severe, extraction.

A filing needs to be sealed to the tooth. If the seal between the tooth and the filling breaks down, food debris and bacteria can seep down under the filling and cause recurrent decay. If the decay is treated early, replacing the filling is adequate. If not, a crown and even a root canal may be needed. The biggest mistake you can make is waiting to do something about a broken or unsealed filling until it is painful. Doing this will only make the treatment more involved and often times more expensive.

Regular dental exams and X-rays are used to evaluate dental fillings. You will not be able to tell on your own when your fillings start to fail. Just as a car mechanic will change the oil, correct your alignment, or change your tires, a dental checkup will help you identify small concerns to fix as you go in order to avoid a critical emergency.

Pay attention to any bite or temperature sensitivity in teeth that have fillings. This can be an indicator for some of the problems listed above. You know your teeth better than anyone. Your observations are most valuable when evaluating a filling for replacement. If replacement is needed, know you are doing what is best to prevent future dental calamities and make an appointment to see Sandra Martin.

Crushing the Ice-Chewing Habit

March 18th, 2026

It's a habit many people have and not only can it be annoying to the people around you, it can be detrimental to your dental health. Chewing ice is so common that it even has its own name, pagophagia. We're not talking about a slushy or shaved ice (although those artificially sugary treats should be avoided too!) but more like the hunks of ice rattling around in the bottom of your glass.

Ice chewing can be a sign of emotional problems like stress or obsessive-compulsive disorder, but it can also be a marker for iron deficiency anemia and other physical problems. Then again, some people just like to have something to chew on. For whatever reason you find yourself chewing on it, it's a habit you need to break.

Chewing on ice can cause:

  • Chipped and cracked teeth
  • Damaged enamel
  • Sore jaw muscles
  • Damage to dental work such as crowns, fillings, or other appliances

If chewing on ice is becoming a problem in your life, don’t hesitate to speak with Sandra Martin about it. But if you find yourself still wanting to chew on something, here are a few alternatives to ice:

  • Baby carrots
  • Celery sticks
  • Sugar-free (xylitol) gum

We know you need to chill sometimes, but chomping down your entire glass of ice is not the way to do it. If you have any other questions on the topic, feel free to talk with a member of our Wake Forrest, North Carolina team. It may be beneficial in solving the issue and helping to remediate any damage to your teeth.

Office Hours: Tuesday — Thursday:
8:00 AM - 5:00 PM (Lunch 1:00pm - 2:00pm)
 
Friday:
8:00 AM - 2:00 PM
 
Saturday:
Closed
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