Posts for: January, 2018
Dentures, removable restorations for missing teeth and gum tissue, can take a number of different forms, but are usually of two different types: complete and partial. A complete denture replaces all the teeth in a given arch. A removable partial denture (RPD), on the other hand, replaces several missing teeth while using the remaining teeth as support.
A common type of RPD formed of plastic is known as a “flipper” because it’s lightweight enough to be “flipped out” or moved around with the tongue. They serve an important purpose as a temporary appliance for use between periodontal treatment, implant placement and similar treatments before obtaining a more permanent restoration. In fact, they’re often referred to as “transitional” RPDs because they’re not designed for permanent tooth replacement.
Because of their low cost relative to other restorations, however, they often become the permanent choice for many people. While a well-constructed, properly fitting RPD in a healthy mouth can be an affordable alternative for people on modest budgets, their long-term use may increase the risk of dental disease and accelerated bone loss. Decades of research verify that people who permanently wear RPDs encounter more tooth decay and periodontal (gum) disease than non-wearers.
This is because the attachment points of a plastic RPD to remaining teeth increases bacterial growth, which can cause both tooth decay and gum disease. This doesn’t only endanger the survival of the remaining teeth, it can lead to bone loss that will affect the RPD’s fit.
While the better course is to consider RPDs as a stepping stone to dental implants or a fixed bridge, there’s an intermediary RPD constructed of cast vitallium or gold alloy that could be considered a permanent choice. These are even lighter weight than plastic and less obtrusive in their attachments in the mouth, which can reduce plaque stagnation and promote a better oral environment.
Regardless of your choice in dentures, it’s always important to maintain good consistent oral hygiene with daily brushing and flossing and semi-annual professional cleanings and checkups. Keeping a healthy mouth will help reduce your risk of dental disease and increase your satisfaction with your denture of choice.
If you would like more information on RPDs and other denture restorations, 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 Partial Dentures.”
There are plenty of options today for replacing missing teeth, including dental implants. But if the teeth have been missing for some time, complications can arise that limit your restorative options.
The most consequential possibility is bone loss. Bone has a life cycle: old cells dissolve (resorb), and are then replaced by new cells, stimulated to grow by the forces applied to the teeth during chewing. But the bone won't receive this stimulation if a tooth is missing — so growth slows down, which causes the bone volume to diminish with time.
Another complication can occur involving other teeth around the open space. These teeth will naturally move or “drift” out of their normal position into the missing tooth space. As a result we may not have enough room to place a prosthetic (false) tooth.
If either or both of these complications occur, we'll need to address them before attempting a restoration. Bone loss itself could eliminate dental implants as an option because they require a certain amount of supporting bone for correct placement. Bone loss could also make correcting misaligned teeth difficult if not impossible.
It might be possible, though, to regenerate lost bone with a bone graft. The graft is placed, sometimes along with growth stimulating substances, within the diminished bone area. It then serves as a scaffold upon which new bone can form.
If the bone becomes healthy again, we can then attempt to move any drifted teeth back to where they belong. Besides braces, there's another treatment option especially popular with adults: clear aligners. These are a series of removable, clear plastic trays that, like braces, exert gradual pressure on the teeth to move them. Patients wear each individual tray for about two weeks, and then switch to the next tray in the series to continue the process.
Unlike their traditional counterparts, clear aligners can be removed for cleaning or for special occasions. More importantly, they're much less noticeable than traditional braces.
Once any problems with bone health or bite have been addressed and corrected, you'll have a fuller range of options for replacing your missing teeth. With a little extra time and effort, you'll soon be able to regain a smile you'll be proud to display.
As a cancer patient, you know how important radiation and chemotherapy are to overcoming the disease. But these treatments often come at a price to other aspects of your health, including your teeth and gums if the treatment target includes the head or neck regions.
Radiation and chemotherapy are effective because they target and destroy cancer cells. Unfortunately, they may also kill non-cancerous, healthy cells; in the mouth, for example, they can damage the cells in the salivary glands and disrupt their ability to produce adequate saliva flow, leading to xerostomia (dry mouth).
This could seriously affect your teeth’s protective enamel shell. As we eat or drink, our mouth’s pH level can become too acidic. Acid is your enamel’s primary enemy because it causes the minerals in the enamel to soften and dissolve (de-mineralization). Saliva neutralizes acid and replaces much of the enamel’s minerals.
Without adequate saliva flow, the enamel will tend to erode over time. You can further aggravate the situation if you routinely consume acidic foods and drinks, like sipping energy drinks or soda during the day. Once the enamel is gone it can’t be replaced naturally, and the teeth will be in serious danger of tooth decay and eventual loss of function and appearance.
To avoid these consequences you should take steps during cancer treatment to reduce your risk for xerostomia or other unhealthy mouth conditions: limit your consumption of acidic foods and beverages; use mouth rinses to counteract acidity and inhibit bacterial growth; and promote saliva flow through medication.
It may be, though, that enamel erosion and subsequent tooth damage is unavoidable. In this case, you may need to consider restorative options with artificial crowns or other cosmetic enhancements — not only to improve your appearance but also to protect your natural teeth from further damage.
Before considering the latter, you should undergo a complete dental examination to assess your condition and make sure you have adequate bone and gum support, and any dental disease under control. From here, we can go about restoring the attractive smile that may have faded during your battle with cancer.