Posts for: June, 2021
The mouth is a crowded place with nerves, blood vessels and sinus cavities sharing common space with the teeth and gums. Although important in their own right, these structures can also hinder treatment for complex dental situations like dental implant surgery or impacted teeth.
Treating these and similar situations depends on getting an accurate depiction of “what lies beneath.” Conventional x-rays help, but their two-dimensional images don't always give the full picture. There's another way—cone beam computed tomography (CBCT).
Similar to CT scanning, CBCT uses x-ray energy to take hundreds of “sliced” images that are then re-assembled with special software to create a three-dimensional model viewable on a computer screen. CBCT is different, though, in that it employs a scanning device that revolves around a patient's head, which emits a cone-shaped beam of x-rays to capture the images.
A dentist can manipulate the resulting 3-D model on screen to study revealed oral structures from various angles to pinpoint potential obstacles like nerves or blood vessels. The detailed model may also aid in uncovering the underlying causes of a jaw joint disorder or sleep apnea.
CT technology isn't the only advanced imaging system used in healthcare. Another is magnetic resonance imaging (MRI), which excites hydrogen atoms in water molecules. This produces different vibration rates in individual tissue structures, which are then translated into detailed images of these structures. Unlike CT or CBCT, MRI doesn't use x-ray energy, but rather a magnetic field and radio waves to produce the atomic vibrations.
But while providing good detail of soft tissues, MRI imaging doesn't perform as well as CBCT with harder tissues like bone or teeth. As to the potential risks of CBCT involving x-ray radiation exposure, dentists follow much the same safety protocols as they do with conventional x-rays. As such, they utilize CBCT only when the benefits far outweigh the potential x-ray exposure risks.
And, CBCT won't be replacing conventional x-rays any time soon—the older technology is often the more practical diagnostic tool for less invasive dental situations. But when a situation requires the most detailed and comprehensive image possible, CBCT can make a big difference.
If you would like more information on advanced dental diagnostics, 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 “Getting the Full Picture With Cone Beam Dental Scans.”
Forty years have passed since the first reported case of Acquired Immune Deficiency Syndrome (AIDS), and it and the human immunodeficiency virus (HIV) that causes it are still with us. About 1.2 million Americans are currently infected with HIV, with 50,000 new cases diagnosed each year.
The emergence of antiretroviral drugs, though, has made it possible for many with HIV to live normal lives. Even so, the virus can still have a profound effect on health, including the teeth and gums. Because of its effect on the immune system, HIV+ patients are at greater risk for a number of oral conditions, like a fungal infection called candidiasis ("thrush").
Another common problem is chronic dry mouth (xerostomia), caused by a lack of saliva production. Not only does this create an unpleasant mouth feel, but the absence of saliva also increases the risk for tooth decay and periodontal (gum) disease.
The latter can be a serious malady among HIV patients, particularly a severe form of gum disease known as Necrotizing Ulcerative Periodontitis (NUP). With NUP, the gums develop ulcerations and an unpleasant odor arising from dead gum tissue.
Besides plaque removal (a regular part of gum disease treatment), NUP may also require antibiotics, antibacterial mouthrinses and pain management. NUP may also be a sign that the immune system has taken a turn for the worse, which could indicate a transition to the AIDS disease. Dentists often refer patients with NUP to a primary care provider for further diagnosis and treatment.
Besides daily brushing and flossing, regular dental cleanings are a necessary part of a HIV+ patient's health maintenance. These visits are also important for monitoring dental health, which, as previously noted, could provide early signs that the infection may be entering a new disease stage.
It's also important for HIV+ patients to see their dentist at the first sign of inflamed, red or bleeding gums, mouth lesions or loose teeth. Early treatment, especially of emerging gum disease, can prevent more serious problems from developing later.
Living with HIV-AIDS isn't easy. But proper health management, including for the teeth and gums, can help make life as normal as possible.
If you would like more information on dental care and HIV-AIDS, 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 “HIV-AIDS & Oral Health.”
Your teeth can take decades of daily biting and chewing and not miss a beat. But they do have a nemesis, dental disease, which can easily get the upper hand. As a result, millions of people lose teeth each year to tooth decay and periodontal (gum) disease.
But while both the living tissue that makes up teeth and gums are susceptible to bacterial attack, the non-living materials in a life-like dental implant are impervious to disease. That being the case, you would think your implants wouldn't need as much hygiene as your other teeth.
But they still do. True, implants in themselves aren't affected by infection, but the bone and other tissues that support them can become diseased. This often happens with advanced cases of gum disease.
There is, in fact, a particular form of gum infection associated with implants called peri-implantitis ("peri"—around; "it is"—inflammation), which occurs in the gums around an implant. Once it starts, peri-implantitis can advance at a rapid pace.
This is because implants don't have the gum attachment of real teeth, which can fight and slow the advance of a gum infection. Because an implant doesn't have this attachment, any infection around it continues virtually unimpeded. If the bone supporting an implant becomes infected, it can weaken to the point that the implant fails.
But this dire scenario can be avoided with continuing hygiene and maintenance of the gum tissues surrounding the implant. You should brush and floss every day around implants to remove dental plaque, the bacterial film most responsible for dental disease, just as you do with natural teeth.
It's also important to keep up regular dental visits for cleanings to remove lingering plaque and tartar (hardened plaque). Your dentist may also notice and clean away any residual cement from the restoration, which can also cause gum inflammation.
And, you should promptly see your dentist if you notice any telltale signs of a gum infection, such as swelling, redness or bleeding, especially around implants. The quicker we diagnose and treat a case of gum disease, particularly peri-implantitis, the less likely it will endanger your implant.