Posts for: September, 2019
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.”
Compared to other dental restorations—a few of which have been around for over a century—implants are a relatively recent development. But even though it's just now entering its fourth decade, recent advances have catapulted implant therapy well beyond where it began.
That's due mainly to digital technology. Two examples of this, computed tomography (CT) and 3-D printing, are increasing the accuracy and efficiency of implant placement.
Properly placing an implant is one of the most important elements in achieving a natural and attractive result. But finding the best location is often difficult due to a lack of suitable bone volume, the patient's bite or the proximity of anatomical structures like nerves and blood vessels. CT imaging, especially Cone Beam CT scanners (CBCT), is helping to make implant placement planning easier.
Unlike the static, two-dimensional views of standard x-rays, CBCT takes hundreds of images and digitally blends them together to create a virtual 3-D model of the patient's jaw and face. Dentists can view this highly detailed model on a computer monitor from various vantage points and better identify possible obstructions. With better information about what "lies beneath," they can more accurately pinpoint the best implant site.
Creating the ideal plan is one thing—successfully implementing it is another. Dentists often create a surgical guide that helps them drill in precisely the right positions during surgery. The guide, which resembles a mouthguard, fits over the gums and contains marker locations for drilling.
Many dentists are now using 3-D printing to create these surgical guides. A 3-D printer turns a digital model of the guide based on measurements of the patient's mouth and proposed implant locations into an actual physical object "printed out" layer by layer of special polymer material. The end product can be more precise than guides created by other means.
These and other technological developments are helping implant therapy rise to a new level of success. With the resulting increase in accuracy, efficiency and less treatment time, tomorrow's implant patients will be the ultimate beneficiaries.
If you would like more information on restoring missing teeth with dental 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 “How Technology Aids Dental Implant Therapy.”
When you awake in the morning do you still feel exhausted? Are you irritable during the day, unable to think or focus clearly? Is your loud snoring bothering your bed partner?
If you answered affirmatively to any of these questions, you may have sleep apnea. This happens when an obstruction (usually the tongue) blocks the airway during sleep, preventing you from breathing. Your brain notices the drop in oxygen and wakes you to re-open the airway. The arousal lasts only a few seconds, and you may not even notice. But because it can happen many times a night, these waking episodes can rob you of the deep sleep your body needs.
Sleep apnea is more serious than simply waking up grumpy. Over time, it could contribute to dangerous health conditions like high blood pressure or heart disease. If you’re noticing any of these signs, it’s important then that you undergo a complete examination by a physician or dentist trained in sleep-related issues.
Fortunately, there are ways to reduce sleep apnea. One of the most common is continuous airway pressure (CPAP): This method uses a small pump that pushes pressurized air through a face mask worn while the patient sleeps. The forced air keeps the airway open and reduces apnea episodes.
While it’s an effective method, it can be uncomfortable and cumbersome to use—some people can’t tolerate wearing the mask while they sleep. But if your sleep apnea symptoms are mild to moderate, your dentist may be able to provide an alternative therapy with a specially designed oral appliance.
Similar to a mouthguard or retainer, a sleep apnea appliance worn during sleep holds the lower jaw forward, which helps move the tongue away from the airway. It’s much less cumbersome (and noisy) than a CPAP machine. And your dentist can custom design and fabricate your appliance for a comfortable fit.
Not all cases of sleep apnea can benefit from such an appliance, or even from CPAP therapy. Extreme cases could require surgery to remove tissues blocking the airway. But most sleep apnea patients don’t require this invasive intervention. Getting checked by a qualified medical professional could open the door to a more convenient and effective way to a better night’s sleep.