Posts for: June, 2019
We often don't realize how important something is until it's gone. Like saliva: you're usually not aware that it's cleaning the mouth, neutralizing mouth acid or helping with digestion. But that could change if your saliva flow drops below normal: your health may soon suffer with your mouth taking the brunt.
In particular, reduced saliva flow increases your risk for tooth decay and periodontal (gum) disease. Both diseases are linked to oral bacteria. While many of the myriad strains in the mouth are beneficial, a few bacteria can infect and inflame gum tissues. Bacteria also produce acid, which can soften and erode enamel and make the teeth more susceptible to decay.
Saliva inhibits bacteria in a number of ways. It first clears the mouth of leftover food so not as much stays behind to form bacterial plaque, a thin film of food particles that builds up on teeth. You still need to brush and floss daily to remove plaque, but it's less effective without saliva's cleansing action. Saliva also contains antibodies that destroy disease-causing bacteria and other organisms, which keeps their populations in the mouth low.
One of saliva's most important functions, though, is buffering acid. The mouth's ideal pH level is neutral, but many foods we eat can cause it to become more acidic.Â Even a slight acidic rise after eating can soften the minerals in enamel. But saliva goes to work immediately and usually restores normal pH within a half hour to an hour. It also aids in re-mineralizing the enamel.
For these reasons, it's important for you to find out the cause of chronic dry mouth and treat it. If it's a side effect of your medication, talk to your doctor about an alternative, or drink more water before and after you take your dose. Certain products can also stimulate saliva flow, like chewing gum with xylitol, an alcohol-based sweetener that has dental health-protecting properties too.
Although you often don't notice this unsung bodily fluid swishing in your mouth, it's important that you take care of it. Keeping your saliva flowing will help ensure better oral health.
If you would like more information on the importance of saliva to 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 “Saliva: How it is used to Diagnose Disease.”
If you know anyone with a dental implant, you may know it can be a long process in getting one. Several weeks or months can pass between removing the old tooth and placing the implant, and then several more weeks before affixing the permanent crown.
But with recent advances in implant technology, some patients don't have to wait as long for a new implant and crown. In fact, one procedure commonly known as "tooth in one day," allows patients to walk in with a problem tooth and out the same day with a new "one."
Not every implant patient, however, can undergo this accelerated procedure. If you're considering implants, the state of your bone health will determine whether or not you can.
Implants need a certain amount of available bone for proper placement. But bone loss, a common consequence of missing teeth or dental disease, can reduce bone volume to less than what's needed to place an implant. The patient may first need to undergo grafting to regenerate the bone or choose another restorative option.
If your supporting bone is sound, your dentist might then proceed with the implant. But you will still have to wait a while for your new crown. The implant needs to integrate with the bone to improve its hold. This integration process can take anywhere from a minimum of six weeks to more commonly twelve weeks. After the attachment is mature, the dentist may need to undo the gum covering before taking impressions for the formation of the new crown.
But it is possible to have a tooth or teeth in a day. For a single tooth, your dentist may be able to immediately attach a crown right after implant surgery if the implant is very stable. Even so, this crown will need to be temporary, slightly shorter than a permanent crown so that it won't make contact with other teeth and put too much pressure on the new implant. After further healing from bone integration, impressions will be taken so that you'll receive your permanent crown shortly.
Immediate crown placement can allow you to have the cosmetic and limited functional benefit of a new tooth right from the start. If multiple implants are placed in one arch in a day, it's possible to have immediate teeth if enough implants are attached together with a temporary restoration.
This is different from a single implant replacing a single tooth and does create confusion for patients when they read about teeth in a day. Regardless, no final tooth crown can be placed at the time of an implant—only a temporary restoration.
If you would like more information on your options for 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 “Same-Day Tooth Replacement with Dental Implants.”
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?”