Posts for: September, 2016
Poor bites, also known as “malocclusions,” can have a dramatic impact on mouth function and appearance. Moving teeth to better positions will solve most of these bite problems — but not all.
A case in point is a malformed maxilla, the skeletal structure formed by the union of the upper jaw and the roof of the mouth (the palate). If the rear portion of the maxilla develops too narrowly, the back teeth will bite abnormally inside the lower teeth while the front teeth bite normally, creating what’s known as a crossbite. People with this kind of malocclusion often shift their lower jaw to one side to bite down completely.
This can be corrected without too much intervention if the problem is diagnosed while the person is young. This is because the maxilla is actually formed from two bones that don’t completely fuse together in the center of the palate until just after puberty. An orthodontic appliance known as a palatal expander takes advantage of this slight gap. The metal appliance is placed along the narrowed portion of the palate in the rear of the mouth: four metal “arms,” two on each side, attach to the inside of the back teeth with a tension device between them that extends the arms outward to put pressure against the teeth.
Every day the patient or a parent uses a special key to turn the tension device and cause it to expand slightly, placing additional outward pressure on the jaw. This will widen the gap in the center of the palate and new bone will grow to fill in the increased space. Over time this will cause the rear portion of maxilla to widen.
While effective, a palatal expander may not work in every case, and it must be done before the two bones fuse permanently. When it can be used, though, it’s a proven treatment that can restore proper bite function, as well as improve your child’s smile.
If you would like more information on palatal expanders to correct certain bite problems, 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.”
In real life he was a hard-charging basketball player through high school and college. In TV and the movies, he has gone head-to-head with serial killers, assorted bad guys… even mysterious paranormal forces. So would you believe that David Duchovny, who played Agent Fox Mulder in The X-Files and starred in countless other large and small-screen productions, lost his front teeth… in an elevator accident?
“I was running for the elevator at my high school when the door shut on my arm,” he explained. “The next thing I knew, I was waking up in the hospital. I had fainted, fallen on my face, and knocked out my two front teeth.” Looking at Duchovny now, you’d never know his front teeth weren’t natural. But that’s not “movie magic” — it’s the art and science of modern dentistry.
How do dentists go about replacing lost teeth with natural-looking prosthetics? Today, there are two widely used tooth replacement procedures: dental implants and bridgework. When a natural tooth can’t be saved — due to advanced decay, periodontal disease, or an accident like Duchovny’s — these methods offer good looking, fully functional replacements. So what’s the difference between the two? Essentially, it’s a matter of how the replacement teeth are supported.
With state-of-the-art dental implants, support for the replacement tooth (or teeth) comes from small titanium inserts, which are implanted directly into the bone of the jaw. In time these become fused with the bone itself, providing a solid anchorage. What’s more, they actually help prevent the bone loss that naturally occurs after tooth loss. The crowns — lifelike replacements for the visible part of the tooth — are securely attached to the implants via special connectors called abutments.
In traditional bridgework, the existing natural teeth on either side of a gap are used to support the replacement crowns that “bridge” the gap. Here’s how it works: A one-piece unit is custom-fabricated, consisting of prosthetic crowns to replace missing teeth, plus caps to cover the adjacent (abutment) teeth on each side. Those abutment teeth must be shaped so the caps can fit over them; this is done by carefully removing some of the outer tooth material. Then the whole bridge unit is securely cemented in place.
While both systems have been used successfully for decades, bridgework is now being gradually supplanted by implants. That’s because dental implants don’t have any negative impact on nearby healthy teeth, while bridgework requires that abutment teeth be shaped for crowns, and puts additional stresses on them. Dental implants also generally last far longer than bridges — the rest of your life, if given proper care. However, they are initially more expensive (though they may prove more economical in the long run), and not everyone is a candidate for the minor surgery they require.
Which method is best for you? Don’t try using paranormal powers to find out: Come in and talk to us. If you would like more information about tooth replacement, please contact us or schedule an appointment for a consultation. You can learn more in the Dear Doctor magazine articles “Crowns & Bridgework,” and “Dental Implants.”