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How Malocclusion or Bad Bite Relates To Different Dental Problems

It is ironic that one of the most common dental disorders is also the most neglected, malocclusion, bad bite. The way the teeth fit together when the jaw closes and chews is of profound importance to the long-term health of your teeth.

If surfaces of the teeth interfere with how the jaw moves, the teeth can be worked loose or the enamel can be worn away this is know an malocclusion, bad bite. The muscles that move the jaw are very powerful and can do major damage to the teeth when the biting surfaces don't fit together properly.

The problem can be compounded if teeth interfere with functional muscle patterns, the jaw muscles will attempt to "erase" the part of the tooth that interferes by grinding against it all the more. This can lead to even more severe wear or it may crack off a cusp or split the tooth. Or it may loosen the tooth or cause it to move out of alignment. The excessive muscle activity often results in pain in the muscle itself. All of the jaw muscles can become sore including the temporal muscles that are the source of many so-called tension headaches.

Some excessive muscle activity may be caused by emotional stress. But with some special exceptions, damage done by stress induced grinding and clenching can be minimized to a manageable level by equalizing the biting surfaces that are in conflict with jaw movements.

The power of the jaw muscles may surprise you. Some people can exert over 900 pounds of compressive force with their jaw muscles so you can imagine how much damage such force can do when you close into a single tooth and then work it from side to side. The effect is very much like working a fence post loose as the bone around the root breaks down. If you can put your finger on any tooth in your mouth, and then squeezing your teeth together causes the tooth to move, you can be sure that it is just a matter of time before there will be a problem with that tooth.

Sometimes in malocclusion, bad bite the muscle forces that work the tooth sideways stimulates bone around the root to build up and become stronger. When that happens, the tooth actually bends in its socket and this creates a microscopic chipping away close to the gum line to form a deep groove in the tooth. This is called an abfraction. These deep grooves at the gum line are often mistaken for toothbrush abrasion, but scientists have shown us that the grooves are actually the results of bending of the tooth in its socket. These grooves can lead to much sensitivity in those teeth because the opening into the tooth exposes nerves that can be exquisitely sensitive. Correction of the bite to remove excessive lateral forces on the teeth in most instances either eliminates the sensitivity completely or reduces it to a much more acceptable level.

Patients should be aware that much confusion surrounds the importance of a harmonious bite, including many misconceptions that have been fostered by flawed research that has failed to properly relate the bite interferences to the position and condition of the temporomandibular joints. Knowledgeable clinicians, however, are very much aware of this relationship and can achieve excellent results in making both your teeth and your jaw muscles more comfortable by bringing your whole biting into harmony and avoiding malocclusion, bad bite.

By Peter E. Dawson, DDS

Why Dentists Say No To Smokeless Tobacco

"Dip" ... "Chew" ... "Pinch" ... "Snuff" ... "Dirt" ... "Plug" ... all are different names for smokeless tobacco, a finely ground version of processed tobacco. No matter the name, smokeless tobacco is harmful and puts your health at risk. Chew on these facts (Don't believe it? Talk to dentists):

• About 30,000 new cases of oral cancer will be diagnosed in 1999.*
• More than 8,000 oral cancer patients will die this year.
• Tobacco products cause about 75% of oral cancers affecting the mouth, tongue, lips, throat, and parts of the nose and larynx.
• Nearly 30 cancer-causing substances have been found in smokeless tobacco.
• One can of smokeless tobacco a day delivers as much nicotine as 60 cigarettes!
• You have a 50% greater risk of developing oral cancer with long-term use of smokeless tobacco.
• Cancer Facts and Figures, American Cancer Society, 1999

Smokeless tobacco has been glorified over time by images of "macho" men performing feats of fame and prowess, whether as athletes, rodeo cowboys, or country music stars. In reality, many want to kick the habit, but nicotine is addictive. It's hard for them to quit.

In a survey of major league baseball players, more than a third reported they had mouth sores, white patches, or gum problems. Nearly 60% said they wanted to quit. The nicotine actually decreases performance, causing dizziness and slowed reaction time.

Smokeless tobacco causes problems for your oral health:

• White, leathery patches in your mouth or lips
• Painful sores that may be pre-cancerous or cancerous
• Yellow teeth and permanent tobacco-stained teeth
• Exposed tooth roots from receding gums, likely to become decayed, sensitive, and painful
• Cavities from the sugar added to the tobacco
• Bad breath
• Greater risk for developing oral cancer

Additionally, smokeless tobacco can affect your general health causing:

• Increased blood pressure and heart rate
• A greater risk of heart attack
• Withdrawal symptoms ranging from headaches, moodiness, and problems concentrating when you try to quit
• Cancer that can be fatal

If you use smokeless tobacco, chew all these facts over. Choose to quit. Your health is serious business. Talk to dentists about getting help to quit. Make the right choice -- it's for your body, your health, and maybe even your life.

By Thomas Warner, DDS

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.