With all the new tooth-colored fillings for cavities, it's easy to overlook metal amalgam. While this mainstay of dental care for over a century might not be as attractive as composite resins or glass and resin ionomers, it still has the advantage of strength and durability.
Amalgam is a stable metal alloy usually made up of silver, tin, copper and mercury. The metals are proportioned and mixed precisely to guard against “free” mercury molecules, which could pose a health hazard. The mixture is pliable at first, but then sets hard once molded into the prepared area of the tooth.
Besides strength, amalgam's other advantages include low cost, high resistance to wear and biocompatibility (not toxic to the body or allergy-producing). At the same time, it can require more tooth structure removal to accommodate a filling and cause higher sensitivity to temperature for a while after installation. Its main disadvantage, however, is appearance — it's now considered unacceptable from an aesthetic point of view to use it in visible areas like the front teeth.
Because of this, materials resembling natural tooth color are coming into vogue, especially as their strength improves. Still, dental amalgam continues to play a useful role, especially in less visible back teeth with higher chewing forces.
One past concern about dental amalgam is the inclusion of mercury in the alloy. As mentioned before, mercury is hazardous in a “free” form when not knit microscopically with other metals; as such it can emit a vapor that could enter the bloodstream and damage the nervous system. But after several studies by various organizations, the American Dental Association has concluded amalgam's precise mixture prevents the mercury from taking this form: although some vapor is given off during chewing it's far too low in concentration to pose any danger.
Dental amalgam continues to be an effective choice for fillings. Whether it's the right choice for you will depend on the type and location of a tooth to be filled, and whether durability is a higher concern than appearance. If we do recommend an amalgam filling, you can be assured it's a safe and lasting choice.
If you would like more information on your choices for dental fillings, 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 “Silver Fillings — Safe or Unsafe?”
Everyone loves a concert where there's plenty of audience participation… until it starts to get out of hand.Â Recently, the platinum-selling band Fifth Harmony was playing to a packed house in Atlanta when things went awry for vocalist Camila Cabello. Fans were batting around a big plastic ball, and one unfortunate swing sent the ball hurtling toward the stage — and directly into Cabello's face. Pushing the microphone into her mouth, it left the “Worth It” singer with a chipped front tooth.
Ouch! Cabello finished the show nevertheless, and didn't seem too upset. “Atlanta… u wild… love u,” she tweeted later that night. “Gotta get it fixed now tho lol.” Fortunately, dentistry offers a number of ways to make that chipped tooth look as good as new.
A small chip at the edge of the tooth can sometimes be polished with dental instruments to remove the sharp edges. If it's a little bigger, a procedure called dental bonding may be recommended. Here, the missing part is filled in with a mixture of plastic resin and glass fillers, which are then cured (hardened) with a special light. The tooth-colored bonding material provides a tough, lifelike restoration that's hard to tell apart from your natural teeth. While bonding can be performed in just one office visit, the material can stain over time and may eventually need to be replaced.
Porcelain veneers are a more long-lasting solution. These wafer-thin coverings go over the entire front surface of the tooth, and can resolve a number of defects — including chips, discoloration, and even minor size or spacing irregularities. You can get a single veneer or have your whole smile redone, in shades ranging from a pearly luster to an ultra-bright white; that's why veneers are a favorite of Hollywood stars. Getting veneers is a procedure that takes several office visits, but the beautiful results can last for many years.
If a chip or crack extends into the inner part of a tooth, you'll probably need a crown (or cap) to restore the tooth's function and appearance. As long as the roots are healthy, the entire part of the tooth above the gum line can be replaced with a natural-looking restoration. You may also need a root canal to remove the damaged pulp material and prevent infection if the fracture went too far. While small chips or cracks aren't usually an emergency (unless accompanied by pain), damage to the tooth's pulp requires prompt attention.
If you have questions about smile restoration, please contact us and schedule an appointment. You can read more in the Dear Doctor magazine articles “Porcelain Veneers: Strength & Beauty As Never Before” and “Porcelain Crowns & Veneers.”
Proponents of legalized marijuana have won phenomenal gains over the last decade. Despite the federal government's continuing criminalization of the drug, several states including California, Colorado and Massachusetts, have voted to legalize its recreational use.
Most people are aware of the social and political controversies the marijuana legalization movement stirs. But there's another side to this roiling issue: the health effects of marijuana, particularly for your teeth and gums. What may be lost beneath the more exciting headlines about ballot initiatives is the growing evidence that habitual marijuana use may increase the risk and severity of periodontal (gum) disease.
Gum disease is a bacterial infection caused by dental plaque, a thin film of bacteria and food particles that accumulates on teeth. The spreading infection triggers inflammation, a normal bodily response to disease that's ordinarily beneficial. But if the inflammation becomes chronic it weakens the gums' attachment to the teeth. This can create voids or periodontal pockets of infection around the teeth. The disease can eventually damage the underlying bone, which could accelerate tooth loss.
Poor oral hygiene is the biggest factor for an increased risk of gum disease; thinner gum tissue (an inherited condition or related to poor tooth position) is another factor, as well as lifestyle habits like tobacco use or excessive alcohol consumption. Add marijuana to the list: there's now some evidence that its use increases the risk for more severe periodontal pockets if the disease occurs.
In a recent study, researchers with the Columbia University College of Dental Medicine reviewed statistics on the care for nearly 2,000 adult patients; a quarter of those in the study were frequent marijuana users. The marijuana users proportionately had deeper periodontal pocket occurrences than the rest of the patients in the study that didn't use the drug.
The study doesn't say that marijuana causes periodontal (gum) disease. But it does suggest that marijuana use might increase its severity. As with other substances and practices in our society, marijuana use comes with a caveat: it may be legal where you live, but it may not necessarily be good for your health.
If you would like more information on the effects of marijuana use on your oral health, 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 “As More States Legalize Marijuana, Link to Gum Disease is a Concern.”
Long ago dental work could be painful and stressful—often for both patient and practitioner. Thankfully, that time is long past: today, most procedures are painless in large part due to local anesthesia.
Local anesthetics are numbing substances applied to specific areas of the body like the teeth and gums to temporarily block pain during a procedure. And because they only affect a localized area of the body, you remain conscious and alert throughout the procedure.
To achieve the level of numbing necessary for dental work, we often need to deaden the gums using a needle to deliver the anesthetic. But then this poses a secondary pain concern—the needle stick itself.
Again, topical anesthesia comes to the rescue in the form of a swab, patch or spray applying an anesthetic directly to the top layer of the gums at the injection site. This numbs the area and prevents you from feeling the needle stick. It's highly probable, therefore, that from start to finish you won't feel any discomfort during your dental work except perhaps for a little pressure.
Local anesthesia truly is a game changer for dental care—and not just for the patient. A dentist who's concerned about their patient's comfort level may work hurriedly to complete a procedure. But if their patient is relaxed, the dentist can work calmly and methodically. The result is better, more focused care.
For all its improvements in the patient experience, though, there has been one consistent complaint—the numbness that often lingers for a while after the procedure is over. But there have been advances in recent years that have helped reduce this irritation: new anesthetic agents (even some that can reverse the anesthetic effect) and fine-tuned dosages can help keep residual numbing to a minimum.
Not all procedures like routine teeth cleanings or enamel shaping require anesthesia. But when it's appropriate, local anesthesia can make your next dental visit much more pleasant.
If you would like more information on how anesthesia benefits your dental care, 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 “Local Anesthesia for Pain-Free Dentistry.”
Canker sores, known medically as aphthous ulcers, are fairly common among people. Lasting for about a week or so, these mouth sores are usually more irritating than painful. But about a quarter of the population, especially women, frequently suffer from an acute form that doesn't often respond well to over-the-counter remedies.
A typical canker sore is usually round with a yellow-gray center ringed by a reddened "halo." They can be preceded by tingling or painful sensations at the site a few hours or so before breaking out. Recurrent aphthous stomatitis (RAS) is the more severe form of canker sore, often with outbreaks of multiple painful sores. While the more common sore is usually less than a centimeter in diameter, RAS sores are often much larger.
Canker sores often arise during periods of stress or anxiety, and seem to be connected with eating certain acidic foods like tomato sauce, citrus fruits or spicy dishes. RAS also seems to be related to underlying systemic conditions like vitamin deficiencies, anemia or digestive disorders. Besides managing diet and stress, people with regular canker sores and milder cases of RAS can often find relief with non-prescription numbing agents often found in stores and pharmacies.
For more severe RAS, though, you may need the help of your dentist or physician with treatments like prescription steroids or other medications that come in gel or rinse form or through injections. The goal of any treatment approach is to decrease pain severity and shorten healing times after an outbreak.
While most mouth sores, including RAS, aren't dangerous to your health, you should still take any sore seriously. You should especially seek medical evaluation if a sore doesn't heal after a couple of weeks, if they seem to come more frequently and are more severe, or if you don't seem to ever be without a sore in your mouth. These could indicate a serious underlying problem that needs to be addressed.
One thing's for sure: there are ways to ease your suffering if you have frequent bouts with regular canker sores or even RAS. Talk to your dentist about ways to minimize your discomfort from these irritating mouth sores.
If you would like more information on aphthous ulcers or canker sores, 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 “Mouth Sores.”
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