Sealants - Eric Yaremko, DMD, PS

What Are Sealants?

The most likely location for a cavity to develop in your child’s mouth is on the chewing surfaces of the back teeth. Run your tongue over this area in your mouth, and you will feel the reason why: These surfaces are not smooth, as other areas of your teeth are. Instead, they are filled with tiny grooves referred to as “pits and fissures,” which trap bacteria and food particles. The bristles on a toothbrush can’t always reach all the way into these dark, moist little crevices. This creates the perfect conditions for tooth decay.

What’s more, a child’s newly erupted permanent teeth are not as resistant to decay as adult teeth are, also adults who have a high risk for developing cavities benefit from the preventative aspects of sealants as well.

Dental sealants are invisible plastic resin coatings that smooth out the chewing surfaces of the back teeth, making them resistant to decay. A sealed tooth is far less likely to develop a cavity, require more expensive dental treatment later on, or, most importantly, cause you or your child pain.

How Sealants Are Placed

X-rays, like visible light, are a form of energy on the electromagnetic spectrum. Just as light makes an image on photographic film (or a digital camera sensor), X-rays can also form an image. The difference is that energetic X-rays can penetrate bone and soft tissue, and reveal its hidden structure by their varying degrees of absorption; in other words, they form a grayscale picture of what’s underneath the surface. But conventional X-rays are limited: Like a still-life picture, they show only one perspective on the scene.

Now imagine a “flip book” — the kind of small book made up of a series of pictures, each slightly different. When you rapidly page through it, you may see (for example) an animated cartoon or a still subject from different perspectives. If you could put together a flip book made from a series of X-ray “slices” of the same subject, taken at slightly different angles, you would be able to create an “animation” of the X-rays. And from there, it’s only one more step to making a 3-D model.

That’s exactly what CBCT scanners do. Using a rotating imaging device that moves around the patient’s head, the scanner records between 150 and 600 different X-ray views in under a minute. Then, a powerful computer processes the information and creates a virtual model of the area under study. When it’s done, the model appears like a three-dimensional image on a computer screen: It can be rotated from side to side or up and down, examined in greater or less detail, and manipulated in any number of ways — all without the patient feeling any discomfort… or even being present.

Taking Care of Sealants

Sealed teeth require the same conscientious dental hygiene as unsealed teeth. In addition ask them to avoid chewing things like ice or hard candy.

Your child should continue to brush and floss his or her teeth daily and visit us for regular professional cleanings. This will give us a chance to check for wear and tear on the sealants, which should last for up to 3 years.

During this time, your child will benefit from a preventive treatment proven to reduce decay by more than 70 percent. In addition, patients should avoid chewing things like ice or hard candy.

What Are Sealants?

How Sealants Are Placed

Taking Care of Sealants

Eric Yaremko, DMD, PS

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