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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

Self Dental Care Tips For Special Needs

Maintaining good oral hygiene can be a challenge, especially if you have developed a health condition that makes brushing and flossing more difficult, or have been in an accident that created new limitations. Dentists want to help all dental patients keep their mouths healthy, and they offer these suggestions about performing oral hygiene and home dental care .

Brushing Tips

Problems in hands, wrists, arms, and shoulders can hinder a person's ability to brush, floss, and perform oral hygiene. While each situation is different, there are some suggestions that have been effective in making dental care easier:

• Use a wide elastic band to attach the toothbrush to your hand for extra gripping power.
• Attach a small rubber ball, a sponge, or a rubber grip to the toothbrush handle with strong tape. This enhances gripping power and is often useful when hand or arm movement is weakened or limited.
• Use a longer wooden dowel, a ruler, or plastic rod to lengthen the toothbrush handle, wrapping it securely with strong tape. This longer length may help in more easily reaching your mouth.
• Use an electric or sonic toothbrush.

Flossing Tips

If limitations make brushing harder, flossing may be an even bigger challenge. Depending on your limitations, try these techniques:

• Use a piece of floss, about 18" long, and wind one end of floss around each finger instead of holding it. This will increase your grip and prevent the floss from dropping out of your fingers with each tooth you floss.
• Hold the floss tightly and seesaw it back and forth between the teeth, instead of pushing the floss right through.
• Tie the floss into a long circle instead of using one long piece, which may make it easier to hold and less likely to drop from your hands.
• Try using a floss holder, available wherever oral hygiene products are sold.

By Danine M. Fresch, DDS