Blog

Sensitive Information

October 7th, 2026

Psst—here’s some time sensitive information for you and your family. If your child’s teeth are sensitive to heat, cold, sweets, acidic foods, wind and/or air, it could mean it’s time to see Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok!

Normally, we don’t notice how external conditions affect our teeth at all. Tooth enamel—the hardest substance in the body—protects the inner tooth from outside stimuli. So, why do strong, solid teeth suddenly feel sensitive? The answer’s found in tooth anatomy.

The crown of the tooth, the part we can see above the gum line, has three distinct layers.

  • Enamel, a strong mineral-rich coating, surrounds the outside of each tooth and protects the dentin and pulp inside.
  • Dentin is the softer, porous middle layer of the tooth. Dentin contains thousands of tiny, fluid-filled tubules which extend to the pulp.
  • In the center of each tooth is the pulp chamber, filled with nerves, blood vessels and connective tissue which keep the tooth alive and healthy.

The roots below the gumline have a similar structure, with one important exception.

  • Cementum, which is not as hard and strong as enamel, covers the root surface instead of enamel.

Healthy, undamaged teeth allow us to enjoy an icy beverage, hot cocoa, a sweet treat, or a brisk walk without any dental discomfort.

When the tooth’s protective enamel covering is worn or damaged, the dentin below the enamel is exposed to external conditions. Temperature changes, air, wind, sweets and acids—all the stimuli which normally have no effect on our teeth are now transmitted through the dentin’s tubules to the nerves inside the pulp.

The pulp’s nerves respond to these sensations by sending out pain signals. Your child might complain about an annoying twinge, a sharp, brief stabbing pain, or a shocking sensation. Or it could be that your child is avoiding some favorite foods or is reluctant to eat at all.

If you suspect your child is suffering from tooth sensitivity, Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok can help discover the cause. There are several potential sources of sensitivity, including:

Loss of Protective Enamel

When dentin is exposed, sensitivity follows! And because baby teeth have thinner enamel than adult teeth, they are even more vulnerable to tooth sensitivity.

  • Aggressive Brushing

Brushing is great! Over-aggressive brushing? Not so much. Heavy-handed brushing and brushing with anything other than a soft-bristled brush can wear down mineral-rich tooth enamel to expose the dentin underneath, and is even more damaging to less-mineral-rich cementum.

  • Diet

An acidic or sugary oral environment harms enamel. Consuming acidic foods and beverages erodes the minerals which make enamel so strong. Sugars give plaque bacteria the perfect fuel they need to produce enamel-eroding acids.

  • Cavities

The bacteria in plaque create acids which strip minerals from tooth enamel. Over time, a hole in the enamel develops, uncovering the sensitive dentin below.

  • Injuries

A crack or fracture can expose dentin, or, in severe cases, tooth pulp, to foods, heat, cold, and air.

Tooth Grinding

Bruxism, or tooth grinding, often takes place during sleep, and can apply over a hundred pounds of pressure to the teeth and jaws. Continuous grinding and clenching wears away tooth enamel, exposing dentin. Bruxism can also cause chipped and cracked teeth, as well as jaw damage and even tooth loss.

Malocclusion

Occlusion refers to the way our teeth and jaws fit together. In a healthy occlusion, the forces of biting and chewing are normal and evenly distributed. A malocclusion, or bad bite, can cause excessive or uneven pressure on teeth and jaws, leading to worn enamel, cracked teeth, and more serious bite problems.

Just as there are many causes for tooth sensitivity, your dental team at Cataraqui Dental Centre has many solutions to restore your child’s comfortable, healthy smile.

Choose Healthy Dental Products

  • If your family doesn’t use soft-bristled brushes, trade in your old models ASAP, or try an electric toothbrush. Electric toothbrushes and water flossers can be especially helpful for cleaning around braces if your child’s in orthodontic treatment.
  • Fluoride treatments can help strengthen tooth enamel.
  • Your pediatric dentist and hygienist at Cataraqui Dental Centre can provide your children with lessons on proper brushing and flossing techniques and tools which will last a lifetime.

Encourage a Dental-Healthy Diet

  • Cut down on acidic and sugary foods and treats.
  • Check food label ingredients. The amount of acids and sugars in foods like sodas and sports drinks could surprise you!
  • If your child does eat something acidic, it’s best not to brush right away. Rinsing with water and waiting an hour to brush gives the enamel time to restrengthen and remineralize.

Schedule Regular Dental Exams and Cleanings

  • Regular exams will discover any cavities before they become deeper and more damaging.
  • Gum disease can cause gum recession, exposing those sensitive, cementum-covered roots. Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok will look out for any signs of early gum disease and offer tips for gum health.

Treat Injuries Immediately

  • If you suspect your child has an injured tooth, call your dentist at once to prevent more serious damage or infection.

Protect Your Child’s Smile from Trauma

  • A custom-fitted nightguard can prevent enamel erosion and other damage caused by bruxism.
  • Insist on a mouthguard when your child plays contact sports or activities to protect teeth from injuries.
  • If your child wears braces, ask your dentist about a custom nightguard or mouthguard designed to work with braces.

Consider Orthodontic Treatment

  • If Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok sees signs of bite problems, talk about the benefits of orthodontic treatment.

The first step in treating tooth sensitivity is a visit to Cataraqui Dental Centre in Kingston, ON to diagnose the source of that discomfort. Tooth sensitivity is time sensitive. Take care of small problems before they become serious ones, and you’ll help make sure your children’s smiles are something they’re not the least bit sensitive about!

Water: It’s Not Just for Brushing!

September 30th, 2026

We turn on the tap and it comes rushing out. We walk down the hall at work or school and stop at the fountain without even thinking about it. It’s the one item on the menu we most likely won’t have to pay for. Let’s face it—we’re probably taking water for granted. So let’s take a moment and look at the many wonderful things that drinking water does for our teeth and dental health!

  • Cleaning Our Mouths

We can’t always brush right after eating to get rid of food particles. Bacteria feed on the sugars and starches left behind, and produce acids that lead to tooth decay and gum disease. Drinking water with our meals washes away lots of this food residue and dilutes the amount of acid our teeth are exposed to. 

  • Protecting Our Teeth

Water helps with saliva production, and saliva distributes important minerals such as fluoride and calcium to our teeth. This process helps strengthen enamel that might have been eroded by acidic foods and bacteria and makes our enamel less vulnerable to cavities.

  • Preventing Cavities and Dry Mouth

Fluoride is a mineral that strengthens the structure of our teeth. Because so much of our water is fluoridated, you can get this essential mineral with every glass. If you don’t have access to fluoridated water, or if you tend to drink only bottled water (which may or may not have fluoride), please talk to Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok about the best way to strengthen and your teeth and help prevent cavities.

Drinking the recommended amount of water per day also helps prevent dry mouth, a condition caused by decreased saliva production. Saliva not only helps remineralize our teeth, as mentioned above, but also works to wash away bacteria and acids that lead to cavities, gum disease, and bad breath. Luckily, we can help ourselves stay hydrated with most liquids, as well as fruits and vegetables that are rich in water content. But the easiest, most effective and often least expensive way to hydrate is with water.

Water just can’t be taken for granted. It’s a marvel of cleaning, protection, and prevention—and it’s calorie-free!

My toothbrush did what?

September 23rd, 2026

If you were to put your toothbrush bristles under a high-powered microscope, what you would see might give you nightmares: millions of bacteria, busily crawling up and down your toothbrush bristles, consuming proteins that came from your mouth, and still clinging to the bristles even after you’ve rinsed them with water.

Rinsing your toothbrush after brushing removes some of those ferociously hungry bacteria, but not all. The Canadian Dental Association says that bacterial infestations develop on toothbrushes within a month of daily use. The CDA also states that unless a toothbrush is sterilized before being packaged, it’s going to come with bacteria – free of charge!

Germs and Frayed Bristles: the Demise of a Toothbrush

Dr. Cosman, Dr. McDonough, Dr. Levac and Dr. Korcok and our staff recommend that you toss your old toothbrush in the trash and purchase a new one every three months. Children tend to bite on their toothbrushes, which makes the bristles degrade and fray faster. Chances are kids may need to have their toothbrushes changed more frequently.

Where do they hide?

Bacteria are tenacious little germs that head for those concealed areas between toothbrush bristles. They are highly adaptable and exist in every type of extreme environment. Some people actually go so far as to put their toothbrush in a microwave for a few seconds to kill germs, but this doesn't always work either. In fact, you may only end up with a toothbrush that’s as bendable as a Gumby doll – and still covered with germs.

Feed a Cold, Starve a Fever, and Get Rid of Your Toothbrush

When you have a head cold, your mouth is teeming with bacteria gleefully roaming around, and gobbling mucus and dead skin cells. If you brush your teeth while suffering a sinus condition, the brush will act like a magnet for ravenous bacteria. Use your old toothbrush while you are sick, but as soon as you feel better, throw it away and get a new one. Otherwise you could possibly re-infect yourself with the same cold germs!

We Love Our Patients!

August 19th, 2026

Hello from all of us at Cataraqui Dental Centre! We wanted to take a moment to recognize our patients.

We are incredibly grateful for the wonderful patients who make our practice such a special place. We love the connections we make with our patients and their families, celebrating their milestones, sharing a few laughs and being part of their lives over the years. Our patients' trust, kindness, and loyalty mean so much to our entire team.