Posts for category: Dental Procedures
One of the best restorative options for slightly deformed, misaligned or stained teeth is a porcelain veneer. Composed of thin, laminated layers of dental material, the veneer is bonded to the outside of the tooth to transform both its shape and color to blend with other natural teeth.
Veneers are more than a technical process — they’re works of art produced by skilled artisans known as dental lab technicians. They use their skills to shape veneers into forms so life-like they can’t be distinguished from other teeth.
How technicians produce veneers depends on the material used. The mainstay for many years was feldspathic porcelain, a powdered material mixed with water to form a paste, which technicians use to build up layers on top of each other. After curing or “firing” in an oven, the finished veneer can mimic both the color variations and translucency of natural teeth.
Although still in use today, feldspathic porcelain does have limitations. It has a tendency to shrink during firing, and because it’s built up in layers it’s not as strong and shatter-resistant as a single composed piece. To address these weaknesses, a different type of veneer material reinforced with leucite came into use in the 1990s. Adding this mineral to the ceramic base, the core of the veneer could be formed into one piece by pressing the heated material into a mold. But while increasing its strength, early leucite veneers were thicker than traditional porcelain and only worked where extra space allowed for them.
This has led to the newest and most advanced form that uses a stronger type of glass ceramic called lithium disilicate. These easily fabricated veneers can be pressed down to a thickness of three tenths of a millimeter, much thinner than leucite veneers with twice the strength.Â And like leucite, lithium disilicate can be milled to increase the accuracy of the fit. It’s also possible to add a layer of feldspathic porcelain to enhance their appearance.
The science — and artistry — of porcelain veneers has come a long way over the last three decades. With more durable, pliable materials, you can have veneers that with proper care could continue to provide you an attractive smile for decades to come.
If you would like more information on dental veneers, please contact us to schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Porcelain Veneers.”
Over 26 million Americans have diabetes, a systemic condition that interferes with maintaining safe levels of blood sugar in the bloodstream. Over time, diabetes can begin to interfere with other bodily processes, including wound healing—which could affect dental care, and dental implants in particular.
Diabetes affects how the body regulates glucose, a basic sugar derived from food digestion that's the primary source of energy for cell development and function. Our bodies, though, must maintain glucose levels within a certain range — too high or too low could have adverse effects on our health. The body does this with the help of a hormone called insulin that's produced as needed by the pancreas to constantly regulate blood glucose levels.
There are two types of diabetes that interfere with the function of insulin in different ways. With Type I diabetes the pancreas stops producing insulin, forcing the patient to obtain the hormone externally through daily injections or medication. With Type II diabetes, the most common form among diabetics, the body doesn't produce enough insulin or doesn't respond adequately to the insulin that's present.
As mentioned, one of the consequences of diabetes is slow wound healing. This can have a profound effect on the body in general, but it can also potentially cause problems with dental implants. That's because implants once placed need time to integrate with the bone to achieve a strong hold. Slow wound healing caused by diabetes can slow this integration process between implant and bone, which can affect the entire implantation process.
The potential for those kinds of problems is greater if a patient's diabetes isn't under control. Patients who are effectively managing their diabetes with proper diet, exercise and medication have less trouble with wound healing, and so less chance of healing problems with implants.
All in all, though, it appears diabetics as a group have as much success with implants as the general population (above 95 percent). But it can be a smoother process if you're doing everything you can to keep your diabetes under control.
While crooked teeth are usually responsible for a malocclusion (poor bite), the root cause could go deeper: a malformed maxilla, a composite structure composed of the upper jaw and palate. If that’s the case, it will take more than braces to correct the bite.
The maxilla actually begins as two bones that fit together along a center line in the roof of the mouth called the midline suture, running back to front in the mouth. The suture remains open in young children to allow for jaw growth, but eventually fuses during adolescence.
Problems arise, though, when these bones don’t fully develop. This can cause the jaw to become too narrow and lead to crowding among the erupting teeth and a compromised airway that can lead to obstructive sleep apnea. This can create a cross-bite where the upper back teeth bite inside their lower counterparts, the opposite of normal.
We can remedy this by stimulating more bone growth along the midline suture before it fuses, resulting in a wider maxilla. We do this by installing a palatal expander, an appliance that incrementally widens the suture to encourage bone formation in the gap, which over time will widen the jaw.
An expander is a metal device with “legs” extending out on both sides and whose ends fit along the inside of the teeth. A gear mechanism in the center extends the legs to push against the teeth on both sides of the jaw. Each day the patient or caregiver uses a key to give the gear a quarter turn to extend the legs a little more and widen the suture gap. We remove the expander once the jaw widens to the appropriate distance.
A palatal expander is an effective, cost-efficient way to improve a bite caused by a narrow jaw, but only if attempted before the bones fuse. Widening the jaw after fusion requires surgery to separate the bones — a much more involved and expensive process.
To make sure your child is on the right track with their bite be sure to see an orthodontist for an evaluation around age 6. Doing so will make it easier to intervene at the proper time with treatments like a palatal expander, and perhaps correct bite problems before they become more expensive to treat.
If you would like more information on treating malocclusions, 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: Orthodontics is more than just Moving Teeth.”
At any given time some 4 million teens and pre-teens are wearing braces or other orthodontic appliances to correct a malocclusion (poor bite). While most cases are straightforward, some have difficulties that increase treatment time and cost.
But what if you could reduce some of these difficulties before they fully develop? We often can through interceptive orthodontics.
This growing concept involves early orthodontic treatment around 6 to 10 years of age with the goal of guiding the development of a child’s jaws and other mouth structures in the right direction. These early years are often the only time of life when many of these treatments will work.
For example, widening the roof of the mouth (the palate) in an abnormally narrow upper jaw takes advantage of a gap in the bone in the center of the palate that doesn’t fuse until later in adolescence. A device called a palatal expander exerts outward pressure on the back teeth to influence the jawbone to grow out. New bone fills in the gap to permanently expand the jaw.
In cases with a developing overbite (the upper front teeth extending too far over the lower teeth when closed), we can install a hinged device called a Herbst appliance to the jaws in the back of the mouth. The hinge mechanism coaxes the lower jaw to develop further forward, which may help avoid more extensive and expensive jaw surgery later.
Interceptive treatments can also be fairly simple in design like a space retainer, but still have a tremendous impact on bite development. A space maintainer is often used when a primary (“baby”) tooth is lost prematurely, which allows other teeth to drift into the empty space and crowd out the incoming permanent tooth. The wire loop device is placed within the open space to prevent drift and preserve the space for the permanent tooth.
To take advantage of these treatments, it’s best to have your child’s bite evaluated early. Professional organizations like the American Association of Orthodontists (AAO) recommend a screening by age 7. While it may reveal no abnormalities at all, it could also provide the first signs of an emerging problem. With interceptive orthodontics we may be able to correct them now or make them less of a problem for the future.
If you would like more information on orthodontic treatments, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor article “Interceptive Orthodontics.”
Moving teeth through orthodontics may involve more than simply wearing braces. There are many bite conditions that require extra measures before, during or after traditional orthodontic treatment to improve the outcome.
One such measure is extracting one or more teeth. Whether or not we should will depend on the causes behind a patient's poor dental bite.
Here, then, are 4 situations where tooth extraction before orthodontics might be necessary.
Crowding. This happens when the jaw isn't large enough to accommodate all the teeth coming in. As a result, later erupting teeth could erupt out of position. We can often prevent this in younger children with space maintainers or a palatal expander, a device which helps widen the jaw. Where crowding has already occurred, though, it may be necessary to remove selected teeth first to open up jaw space for desired tooth movement.
Impacted teeth. Sometimes an incoming tooth becomes blocked and remains partially or fully submerged beneath the gums. Special orthodontic hardware can often be used to pull an impacted tooth down where it should be, but not always. It may be better to remove the impacted tooth completely, as well as its matching tooth on the other side of the jaw to maintain smile balance before orthodontically correcting the bite.
Front teeth protrusion. This bite problem involves front teeth that stick out at a more horizontal angle. Orthodontics can return the teeth to their proper alignment, but other teeth may be blocking that movement. To open up space for movement, it may be necessary to remove one or more of these obstructing teeth.
Congenitally missing teeth. The absence of permanent teeth that failed to develop can disrupt dental appearance and function, especially if they're near the front of the mouth. They're often replaced with a dental implant or other type of restoration. If only one tooth is missing, though, another option would be to remove the similar tooth on the other side of the jaw, and then close any resulting gaps with braces.
Extracting teeth in these and other situations can help improve the chances of a successful orthodontic outcome. The key is to accurately assess the bite condition and plan accordingly.
If you would like more information on orthodontic options, 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 “Removing Teeth for Orthodontic Treatment.”