Posts for category: Dental Procedures
Dental implants are widely considered by both dentists and patients as the premier choice for replacing missing teeth. Unfortunately, implants aren’t the appropriate choice for teenagers with missing teeth.
That’s because their jaws won’t fully finish most of their growth and development until early adulthood. An implant placed too early could become misaligned as the jaw matures. The best approach for a teenager is a temporary restoration until they’re old enough for an implant.
There are a couple of good options. One is a removable partial denture (RPD), prosthetic (false) teeth set in an acrylic base that mimics gum tissue at the locations of the missing teeth. RPDs, which stay in place by way of metal clips that fit over other teeth, are easy to wear and maintain.
On the downside, an RPD can break if you bite into something too hard. They can lose their fit and may need to be replaced with a new one. And, some teens aren’t quite keen on wearing a “denture.”
Another option is a bonded or Maryland bridge, a kind of fixed bridge. We bond dental material to the back of a prosthetic tooth with portions of the material extending out from either side of it.Â We then bond these extending tabs to the back of the teeth on either side of the prosthetic tooth to hold it in place. Unlike traditional bridges, we can eventually remove it without any permanent alterations to the teeth it’s attached to.
Before we undertake a bonded bridge, though, we must make sure the gums and bone of the surrounding teeth are free from periodontal (gum) disease and are healthy and strong enough to support the bridge. We also need to be sure the patient doesn’t have a deep bite or a teeth grinding habit, which could cause the teeth to make contact with the tabs and break them.
The patient also needs the maturity to responsibly perform diligent oral hygiene: this type of bridge has a tendency to build up disease-causing plaque, so brushing twice and flossing once every day is critical. Not doing so increases the risk of tooth decay or periodontal (gum) disease, which could complicate a future implant.
We can discuss these options after a thorough dental examination of your teenager. Either way, we’ll be able to restore your teen’s smile until we can undertake a more permanent restoration.
All eyes were on Boston Celtics point guard Isaiah Thomas in Game 1 of the second-round NBA Playoff series against the Washington Wizards — and not just because he scored a game-high of 33 points! Even more dramatic was the moment his jaw collided with an opponent’s elbow, sending one of his front teeth flying out of his mouth and onto the floor.
Press reports said the Celtics’ team physician attempted to reinsert the tooth, but it didn’t remain in place when Thomas resumed playing the game. Over the next several days, he reportedly underwent a total of ten hours of oral surgery, and was fitted with a four-piece temporary bridge. A statement from the team noted that Thomas suffered “a complete fractured tooth and two other subluxed/shifted teeth… [He] will receive a permanent bridge at a future date.” So what does all that mean?
When we say a tooth is fractured, it means the crown (visible part) of the tooth has broken off from its roots, either above or below the gum line. Depending on the severity of the fracture, it is sometimes possible to save the natural tooth by performing a root canal to prevent bacterial infection, and then placing a crown (cap) on the tooth to restore its appearance and function. In more severe cases, however, the tooth can’t be saved and must be extracted.
Unfortunately, that isn’t Thomas’ only problem. He also has two subluxed teeth — that is, teeth that have shifted from their original position, but haven’t been knocked out of their sockets. Subluxed teeth often result from a severe blow to the mouth, and may be treated by stabilization or splinting. Team officials haven’t said exactly what was done during Thomas’ dental treatment, but it could very well have involved extracting the roots of any teeth that couldn’t be saved, and possibly placing dental implants in his jaw for future tooth restoration.
A dental implant is a small screw-shaped titanium post that is inserted directly into the bone of the upper or lower jaw in a minor surgical procedure. In time, it becomes fused with the bone itself, offering a sturdy anchorage for replacement teeth. One implant can support one replacement crown; two or more implants can support a number of replacement teeth joined together as a unit. This is called a dental bridge.
Bridges can also be supported by adjacent healthy teeth — but first, the outer surfaces of the crown must be prepared (reduced in size), so that the bridge can be attached over the remaining part of the crown. In many instances, implants are preferred because they do not compromise the structure of healthy teeth nearby.
Dental difficulties didn’t end Isaiah Thomas’ season — but an earlier hip injury that became aggravated finally did.Â As unfortunate as this is, maybe now at least the NBA star will have a chance to let those injured teeth heal, and show up next season with a smile that’s as good as new.
One of the top concerns in public health today is exposure to the metallic element mercury within the environment. At abnormal levels, mercury can have a toxic effect on our nervous systems and cause other health problems.
These concerns over mercury have also increased attention on one material in dentistry that has included the metal in its makeup for over a century — dental amalgam for filling teeth. Amalgam is a metal alloy that can include, in addition to mercury, silver, tin, and copper. When first mixed dental amalgam is a moldable material used for fillings in prepared teeth. It then hardens into a durable restoration that can withstand biting forces.
While the use of amalgam has declined with the introduction of life-like colored fillings, it's still used for teeth like molars subject to high biting forces. With what we now know about the ill effects of mercury (which can make up to half of an amalgam mixture) is it safe to continue its use?
The American Dental Association has performed extensive research into amalgam safety. They've found that mercury is stabilized by the other metals in the amalgam. This prevents "free" molecules of mercury, the real source of harm to health, from escaping into the blood stream in the form of vapor. Although trace amounts of mercury vapor from the amalgam are released as a person chews, those levels are well below the threshold that could cause harm.
From a patient standpoint, the biggest drawback to dental amalgam isn't safety — it's the appearance of teeth it's used on. Silver fillings aren't considered attractive. And now there are viable filling alternatives that not only look like natural teeth but can withstand biting forces almost as well as amalgam. These materials include composite resins, mixtures of glass or quartz within resin, or glass and resin ionomers. Each of these has advantages and disadvantages depending on how and where they're applied.
After a thorough dental examination, we'll be able to advise you on what filling material will work best to produce the best result. And if we do suggest dental amalgam you can rest assured it will be a safe choice.
If you would like more information on the safety of dental amalgam, 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 “Silver Fillings — Safe or Unsafe?”
Although usually an orderly process, some permanent teeth don't come in as they should. In fact, they may not come in at all and remain hidden in the gum — a situation called impaction. This creates multiple problems for function, health and, in the case of front canines, appearance.
Canines are the longer and more pointed teeth on each side of the front-most incisors. They help tear and cut food during chewing, a function impaction eliminates. Besides a higher risk for developing abscesses (isolated areas of infection) and cysts, they can also put pressure on neighboring teeth and damage their roots or cause them to erupt abnormally.
Dentists often remove impacted wisdom and other back teeth to lessen these potential problems. Removing canines, though, has additional considerations: besides compromising ideal chewing function, missing canines often create an unattractive smile.
But before considering removal, there's another technique we might be able to use to save the canines and actually draw them down through the gums to their correct position. It's usually part of an overall orthodontic plan to correct a poor bite (malocclusion).
After pinpointing their exact position with x-rays or CT scanning, a surgeon surgically exposes the impacted canines' crowns through the gums. They then bond small brackets to the crowns and attach a small gold chain to each bracket. They fasten the other end of the chains to orthodontic hardware that exerts downward pressure on the impacted teeth. Over several months this pressure can help move the teeth into their normal positions.
Unfortunately, this technique isn't always advisable: one or more of the impacted teeth may be in a difficult position to attempt it. It's usually best in these situations to remove the teeth, usually sooner rather than later for the sake of neighboring teeth.
Fortunately, with today's advanced restorative techniques, we can eventually replace the canines with dental implants, although that's best undertaken after the patient enters adulthood. In the meantime, we can utilize orthodontic means to preserve the open space and provide a temporary restorative solution.
Whatever route taken, these teeth don't have to become a source of problems, especially for your appearance. Whether through orthodontics or restorative dentistry, impacted canines don't have to ruin your smile.
If you would like more information on various orthodontic procedures, 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 “Exposing Impacted Canines.”
For centuries, people who've lost all their teeth have worn dentures. Although materials in today's dentures are more durable and attractive than those in past generations, the basic design remains the same — prosthetic (false) teeth set in a plastic or resin base made to resemble gum tissue.
If you're thinking of obtaining dentures, don't let their simplicity deceive you:Â a successful outcome depends on a high degree of planning and attention to detail customized to your mouth.
Our first step is to determine the best positioning for the prosthetic teeth. It's not an “eyeball” guess — we make a number of calculations based on the shape and size of your jaws and facial features to determine the best settings within the resin base. These calculations help us answer a few important questions for determining design: how large should the teeth be? How far forward or back from the lip? How much space between the upper and lower teeth when the jaws are at rest?
We also can't forget about the artificial gums created by the base. How much your gums show when you smile depends a lot on how much your upper lip rises. We must adjust the base size to accommodate your upper lip rise so that the most attractive amount of gum shows when you smile. We also want to match as close as possible the color and texture of your natural gum tissues.
There's one other important aspect to manage: how your upper and lower dentures function together when you eat or speak. This means we must also factor your bite into the overall denture design. This may even continue after your dentures arrive: we may still need to adjust them while in your mouth to improve function and comfort.
Ill-fitting, dysfunctional and unattractive dentures can be distressing and embarrassing. But with careful planning and customization, we can help ensure your new dentures are attractive and comfortable to wear now and for years to come.
If you would like more information on removable dentures for teeth replacement, 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 “Removable Full Dentures.”