Posts for tag: dentures
Even with modern prevention and treatment advances, losing teeth in later life is still a sad but common part of human experience. Just as generations have before, many today rely on dentures to regain their lost dental function and smile.
But although effective, dentures have their weaknesses. The most serious: they can't prevent jawbone deterioration, a common problem associated with tooth loss.
Bone health depends on chewing forces applied to the teeth to stimulate replacement growth for older bone cells. When teeth are gone, so is this stimulation. Dentures can't replicate the stimulus and may even accelerate bone loss because they can irritate the bone under the gums as they rest upon them for support.
But there's a recent advance in denture technology that may help slow or even stop potential bone loss. The advance incorporates implants with dentures to create two hybrid alternatives that may be more secure and healthier for the supporting bone.
The first is known as an overdenture, a removable appliance similar to a traditional denture. But instead of deriving its support from the gums alone, the overdenture attaches to three to four implants (or only two, if on the lower jaw) that have been permanently set into the jawbone. This not only increases stability, but the implants made of bone-friendly titanium attract and foster increased bone growth around them. This can help slow or even stop the cycle of bone loss with missing teeth.
The second type is a fixed denture. In this version, four to six implants are implanted around the jaw arch. The denture is then secured in place to these implants with screws. It's a little more secure than the overdenture, but it's also more expensive and requires good quality bone at the implant sites.
If you've already experienced significant bone loss you may first need bone grafting to build up the implant sites for these options, or choose traditional dentures instead. But if you're a good candidate for an implant-supported denture, you may find it provides better support and less risk of continuing bone loss than traditional dentures.
If you would like more information on implant-supported dental 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 “Overdentures & Fixed Dentures.”
It’s a common problem for denture wearers: after years of a comfortable fit, your dentures now seem to be uncomfortably loose. The reason, though, may have more to do with bone loss than the dentures.
Bone is a living tissue with a life cycle — it forms, it ages, and it eventually dies and dissolves (resorbs). It’s replaced with new bone and the cycle repeats. Additionally, the forces generated when we bite or chew are transmitted from the teeth to the jaw, which helps stimulate new bone growth. When the natural teeth are missing, however, the bone no longer receives this stimulus. Resorbed bone isn’t replaced at a healthy rate, which leads over time to bone loss.
Denture construction can also contribute to bone loss. The denture palate rests for support on the bony ridges that once held the teeth. Over time the compressive forces of the dentures apply damages and reduces the volume of gum tissue and eventually does the same to the bone. Combining all these factors, the reduced gum and bone volume will eventually alter the denture fit.
There are a few alternatives for correcting loose dentures. One is to reline them with new plastic, as either a temporary fix performed during an office visit or a more permanent relining that requires sending your dentures to a dental lab. Depending on the rate of bone loss, a patient could go through several denture relinings to accommodate ongoing changes in the jaw. At some point, though, it may be necessary to create a new set of dentures.
A third alternative that’s becoming increasingly useful is to incorporate dental implants into the denture design. Implants can of course be used to replace individual teeth, but a few strategically placed implants (usually of smaller dimension) can serve as a support platform for a removable denture. This relieves some of the compression force of a traditionally worn denture and can slow bone loss.
If you’re having problems with your denture fit, call us for an appointment. We’ll help you decide on the best alternative to improving the fit and making your dentures more comfortable and secure.
If you would like more information on refitting loose dentures, please contact us today to schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Loose Dentures.”
While dental implants are the preferable choice for teeth replacement, your life circumstances may cause you to postpone it or some other permanent restoration. In the meantime, you need a temporary solution for your tooth loss.
Removable partial dentures (RPDs) have met this need for many years. RPDs are traditionally made of rigid, acrylic plastic resin and fasten to existing teeth with metal clasps. While effective as temporary tooth replacements, RPDs do have their drawbacks: they can be uncomfortable, develop a loose fit and are prone to wear and staining.
Recently, though, new RPDs made of a flexible type of nylon are addressing some of these drawbacks. Because the nylon material is thermoplastic (able to change shape under high heat), it can be injected into a cast mold of a patient’s mouth to create the denture base, to which life-like replacement teeth are then attached. And rather than a metal clasp, these RPDs have thin, finger-like nylon extensions that fit snugly around existing teeth at the gum line.
The new RPDs are lightweight, resistant to fracture and offer a more comfortable, snugger fit than the older RPD. And because the nylon material can be made to closely resemble gum tissue, the base can be designed to cover receding gum tissue, which may further improve the appearance of a patient’s smile.
On the downside, these new RPDs are difficult to reline or repair if they’re damaged or the fit becomes loose. And like all RPDs, they must be regularly removed and cleaned thoroughly to prevent any accumulating bacterial biofilm that could increase the risk of gum disease or tooth decay (the attachment extensions are especially susceptible to this accumulation). They should also be removed at night, since the reduction in saliva flow while you sleep can worsen bacterial buildup.
Still, the new flexible RPD is a good choice to bridge the time gap between lost teeth and a permanent restoration. They can restore lost function and improve your smile during the transition to implants or a fixed bridge.
Some patients who wear dentures face a kind of Catch-22: their denture fit may have loosened and become uncomfortable over time due to continued bone loss, yet the same bone loss prevents them from obtaining dental implants, a superior tooth replacement system to dentures.
But there may be a solution to this dilemma that combines the stability of implants with a removable denture. A set of smaller diameter implants — “mini-implants” — can support a removable denture with less bone than required by a conventional implant.
Like all living tissue, bone has a life cycle: after a period of growth, the older bone dissolves and is absorbed by the body, a process known as resorption. The forces generated when we bite or chew are transmitted by the teeth to the jawbones, which stimulates new bone formation to replace the resorbed bone. When the teeth are lost, however, the stimulation is lost too; without it, resorption will eventually outpace bone growth and repair, causing the bone mass to shrink.
Removable dentures also can’t supply the missing stimulation — bone loss continues as if the dentures weren’t there; and due to the compressive forces of a denture, bone loss accelerates. As the jawbone structure used to originally form the denture’s fit eventually shrinks, the denture becomes loose and difficult to wear. It’s possible to adjust to the new jaw contours by relining the dentures with new material or creating a new set of dentures that match the current bone mass. Without adequate bone, fixed crowns or bridges anchored by conventional implants may also be out of the picture.
On the other hand, mini-implants with their smaller diameter need less bone than the traditional implant. A few strategically placed within the jaw are strong and stable enough to support a removable denture. One other advantage: these mini-implants can be installed in one visit with local anesthesia and usually without the need for incisions or stitches.
If you would like more information on dentures supported by mini-implants, 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 “The ‘Great’ Mini-Implant.”
At first glance, you might think at-home denture repair belongs in the same category as Do-It-Yourself brain surgery and cloning your pet in the kitchen sink. But the fact is, you can actually buy a variety of DIY denture repair kits on line, send for them through the mail, even pick them up at some drug stores;you can even watch a youtube video on how to do your own denture repair. So if you’re feeling like Mr. (or Ms.) Fix-it, should you give it a whirl?
Absolutely not! (Do we even have to say this?) Repairing dentures is strictly a job for professionals — and here’s why:
First off, dentures are custom-fabricated products that have to fit perfectly in order to work the way they should. They are subject to extreme biting forces, yet balance evenly on the alveolar ridges — the bony parts of the upper and lower jaw that formerly held the natural teeth. In order to ensure their quality, fit and durability, dentures are made by experienced technicians in a carefully controlled laboratory setting, and fitted by dentists who specialize in this field. So just ask yourself: What are the chances you’re going to get it right on your first try?
What’s more, the potential problems aren’t just that DIY-repaired dentures won’t feel as comfortable or work as well. Sharp edges or protruding parts could damage your gums, make them sore or sensitive, or even lacerate the soft tissues. And even if these problems don’t become apparent immediately, they may lead to worse troubles over time. Dentures that don’t fit properly can cause you to become more susceptible to oral infections, such as cheilitis and stomatitis. They may also lead to nutritional problems, since you’re likely to have difficulty eating anything but soft, processed foods.
Finally, the kits themselves just don’t offer the same quality products you’d find in a professional lab. That means whatever repairs you’re able to make aren’t likely to last very long. Plus, they contain all sorts of substances that not only smell nasty, but can quickly bond your fingers to the kitchen counter — or to the broken dentures. (Imagine trying to explain that at the emergency room…)
So do yourself a favor: If your dentures need repair, don’t try and do it yourself. Bring them in to our office — it’s the best thing for your dentures… and your health.
If you would like more information about dentures or denture repair, please call our office to schedule a consultation. You can learn more in the Dear Doctor magazine article “Loose Dentures” and “Removable Full Dentures.”