Posts for: January, 2014

By Resh Family Dentistry
January 23, 2014
Category: Oral Health
Tags: celebrity smiles  
WhatOralApplianceDoesOlivaNewton-JohnUsetoProtectHerteeth

Though it's been a while since Olivia Newton-John sang her way into our hearts in the movie Grease, her smile is as radiant as ever. Today, Olivia is still singing, acting and busy with new ventures such as authoring a cookbook and raising money for the cancer center that bears her name in Melbourne, Australia. Whichever part of the world Olivia finds herself in, she protects that beautiful smile with an oral appliance that many find beneficial.

“I wear a nightguard to prevent wear on my teeth, custom-made by my dentist,” Olivia recently told Dear Doctor magazine. “I love it!”

Olivia's device, also referred to as a bite (occlusal) guard, is designed for people who clench or grind their teeth at night, or during stressful periods. Made of thin, wear-resistant plastic, it is custom-made to fit exactly over your top teeth. This allows the bottom teeth to slide gently across the top teeth without biting into them. Not only does this prevent excessive tooth wear, it also helps relax the muscles of the jaw.

Grinding or “bruxing,” as it's also called, can affect virtually any part of the oral system: the jaw joints or muscles, resulting in spasm and pain; the teeth themselves, resulting in wear, fractures or looseness; it can even cause an aching in the ears, head, neck or back.

If you are a teeth-grinder, you might not even know it unless a sleeping partner hears it or your dentist notices signs of wear. These habits are called “parafunctional” (para – outside, function – normal), meaning the biting forces it generates are well outside the normal range — sometimes as much as 10 times normal. So it's no wonder that damage to teeth can occur if they are not protected.

If you have any questions about grinding habits or nightguards, please contact us or schedule an appointment for a consultation. If you would like to read Dear Doctor's entire interview with Olivia Newton-John, please see “Olivia Newton-John.” Dear Doctor also has more on “Stress & Tooth Habits.”


CaughtEarlyCross-BitescanbeCorrectedWithPalatalExpanders

There’s more to orthodontics than simply moving teeth. Especially with children and adolescents, we also want to guide the development of the entire facial structure to solve certain types of malocclusions (poor bites).

One such concern involves the upper jaw and palate (roof of the mouth), known collectively as the maxilla. In some individuals, the maxilla is narrower than normal. This causes the upper teeth to fit abnormally inside the lower teeth when occluding or “biting down” and is known as a cross-bite. A cross-bite may restrict the amount of space for your teeth to erupt (appear in the mouth) in proper alignment. It can be so severe the individual may have to shift the jaw to one side to completely bite down.

If a cross-bite is caught early, there’s a non-surgical treatment to widen the maxilla and help prevent upper teeth misalignment. But there’s a limited time window of opportunity: this is because the maxilla is actually formed by two bones with a seam that runs down the middle of the palate. The two bones will eventually fuse, usually at the beginning of puberty; until then there’s a slight separation.

Before the bones fuse, we can use a palatal expander to widen this seam and encourage permanent bone growth in the resulting gap. The expander is made of two metal halves joined in the middle by a small screw device that fits between the teeth. You or your child turns the screw a very small amount once or twice a day with a special key and the action pushes the maxilla outward on either side: the slight tension created stimulates bone growth. Over time, the new bone will have added width to the maxilla and eliminated the cross-bite.

While it’s possible to correct this after the maxilla fuses, it will require surgery to separate the bones. The palatal expander helps us correct the problem in the most non-invasive way possible, but it must be done before puberty. Discovering this type of malocclusion early is one of many reasons why regular dental visits should be an important part of your child’s healthcare.

If you would like more information on palatal extenders, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Palatal Expanders.”