Posts for: March, 2013
“We all scream for ice cream,” the saying goes. But what if eating ice cream — or any very cold or hot food — literally makes you want to scream because your teeth hurt so much?
What causes sensitivity in teeth?
Understanding the anatomy of a tooth helps explain what happens when a tooth becomes sensitive to heat and cold. A tooth is composed of three types of tissue: a hard outer shell of enamel, the body of the tooth composed of the dentin, and an interior tissue of the pulp.
Enamel: The enamel forms the outside of the crown, the part of the tooth you normally see. Made of densely packed crystals of calcium, it is resistant to wear. It is not living tissue, and does not contain nerves, but it is capable of transmitting temperature like hot and cold.
Dentin: Inside the tooth's crown and root is a living tissue called dentin, which is a porous structure similar to bone. It is composed of microscopic tubules containing living cells, which are encased in a hard substance made of calcium crystals.
Pulp: The living dentin transmits sensation through to the pulp, which is in the center of the tooth and contains the tooth's blood vessels and nerves.
A tooth's enamel normally protects the dentin from exposure to extremes of temperature and pressure. If you wear away the enamel and expose the dentin, it will pass sensation through to the nerves in the pulp more directly. The result can range from a twinge to an excruciating pain.
Sensitivity can be caused by:
- Overzealous tooth brushing resulting in enamel wear and consequently dentin exposure and wear.
- Enamel and dentin erosion by acids in the foods and beverages you eat and drink.
- Tooth decay — the most common cause of sensitivity. Decay destroys enamel and dentin inflaming and infecting the living tissues of the pulp, which become increasingly painful.
What can you do to make your teeth less sensitive?
- Use a soft bristle tooth brush, and brush the affected teeth gently to remove all bacterial plaque. We can advise you on safe and effective brushing techniques.
- Use toothpaste that contains fluoride. Fluoride strengthens tooth surfaces and makes them more resistant to sensitivity and decay.
- Ask us about professionally applied fluoride varnishes or filling materials that can cover and replace sensitive or lost tooth structure.
Of course, if the problem is caused by tooth decay, make an appointment with us to remove the decay and place a filling in the sensitive teeth.
Growing up with a dentist stepdad, Cheryl Burke of Dancing with the Stars heard a lot over the years about the importance of good oral hygiene — in particular, the benefits of using dental floss.
“My dad would say, ‘make sure you floss,’ but I never really listened to him. I was very, very stubborn,” Cheryl told Dear Doctor magazine recently in an exclusive interview. Cheryl admits this stubbornness took its toll, in the form of tooth decay. “I definitely had my share of cavities,” Cheryl recalled.
Cavities can form when food particles, particularly sugar and carbohydrates, are not effectively cleaned from the spaces between teeth. These particles are then broken down by bacteria naturally present in the mouth, resulting in the production of acids that attack the tooth enamel.
When she reached her twenties, Cheryl decided she really needed to step up her oral hygiene and cultivate an asset so important to a professional dancer: a beautiful smile. And once she did, cavities became a distant memory.
“I think when you do floss frequently, it helps to reduce the chances of getting cavities,” Cheryl said. “It took me a while to figure it out.” Now Cheryl flosses after every meal. “I carry floss with me wherever I go. I have no shame busting out my floss in the middle of a restaurant!” She declared.
Dental decay is actually a worldwide epidemic, especially among kids. Untreated, it can lead to pain, tooth loss, and, because it is an infectious disease, it may even have more serious systemic (whole body) health consequences. The good thing is that it is entirely preventable through good oral hygiene at home and regular professional cleanings here at the office.
If it has been a while since you or your children have seen us for a cleaning and check-up, or you just want to learn more about preventing tooth decay, please contact us to schedule an appointment for a consultation. If you would like to read Dear Doctor's entire interview with Cheryl Burke, please see “Cheryl Burke.” Dear Doctor also has more on “Tooth Decay: The World's Oldest & Most Widespread Disease.”