Posts for: May, 2018
Tooth decay is a primary cause of tooth damage and loss, with annual treatment costs in the billions of dollars. It arises mainly from oral bacteria, which proliferates in the absence of effective oral hygiene. There are, however, other risk factors besides poor hygiene that could make you more susceptible to this disease.
Many people, for example, have genetically inherited deeper grooves (fissures) and depressions (pits) than the average tooth anatomy. These may be harder to reach with a toothbrush and can become havens for bacterial plaque. Others may have health conditions that indirectly affect the mouth: bulimia or anorexia, psychological conditions that involve self-induced vomiting, or GERD, gastro-esophageal reflux disease, in which stomach acid could regurgitate into the mouth. These conditions could result in a highly acidic mouth environment.
Some medical and — ironically — dental treatments could also increase your tooth decay risk. Some medications can reduce saliva flow, which inhibits acid neutralization and re-mineralization of enamel. Retainers, braces, bite guards or other dental appliances may also reduce the saliva wash over teeth, and can make brushing and flossing more difficult.
There are also risk factors that result from our lifestyle choices. Eating a lot of foods rich in sugars and other carbohydrates, for example, or acidic beverages like soda, energy or sports drinks contributes to the rise of bacteria in our mouths.
There are ways to reduce the effects of these risk factors. In addition to a daily habit of effective brushing and flossing, you should also include semi-annual cleanings and checkups at our office a part of your routine. If you have genetic, medical or dental issues that are out of your control, we can discuss solutions, such as alternatives to medications or different techniques for cleaning around dental appliances. For lifestyle-related factors, you should consider removing the habit or modifying it: for example, snacking at specific times or drinking acidic beverages only at mealtime.
While tooth decay is a serious, destructive disease, it is highly preventable. Addressing all your risk factors, not just hygiene, will reduce your chances of having it.
If you would like more information on tooth decay prevention, 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 “Tooth Decay: How to Assess Your Risk.”
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?”
Although periodontal (gum) disease usually affects your gums first, your teeth may eventually suffer. That’s because the disease can damage both attaching gum tissues and supporting bone.
One advanced sign of this is when one or more teeth become loose. A loose tooth is an alarm bell that you’re about to lose it.
Fortunately, we can often treat loose diseased teeth with a two-phase approach. First and foremost, we need to bring the gum infection under control by removing plaque and calculus (tartar) — the “fuel” for the infection — from all tooth and gum surfaces. Depending on how extensive it is, we have options: we can use specially designed hand instruments to remove plaque and calculus, ultrasonic equipment that loosens and flushes plaque and calculus away, or, if necessary, conventional or laser surgery.
Depending on the extent of the infection, in some cases we may need to use regenerative surgical techniques like gum and bone grafting to replace lost tissue. Healing takes time, though, which leads to the second phase of treatment — securing the loose tooth during gum healing.
The most common way is through a bite adjustment, where teeth are altered to equilibrate chewing forces evenly. This results in all the teeth being hit at the same time allowing the loose teeth to heal and tighten up.
Another option is splinting teeth together. Although there are different methods, the basic idea is to join the loose teeth with stable teeth like pickets in a fence. One way is to bond splinting material across the back surfaces of the involved teeth. Another way is to cut in a small channel across the teeth and insert and bond a rigid strip of metal to splint the teeth in place.
The splint is usually a temporary measure while the gums heal. In some situations, though, we may need to perform a permanent splint by crowning the affected teeth and then splinting the crowns together. If you have a grinding habit we may also prescribe a night guard to limit the damage done while you sleep.
Before deciding on which technique is best for you, we would first need to evaluate the health of the affected teeth to see whether the effort would be worth it. It could be the tooth’s supporting bone structure has become so deteriorated that it might be better to extract the tooth and consider an implant or other replacement. First, though, we would attempt if at all practical to save the tooth — and the sooner we begin treating it, the better your chances for such an outcome.
If you would like more information on loose teeth and gum disease, 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 “Treatment for Loose Teeth.”