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Welcome to Discovery Health's Expert Blogs! Read the latest entries from our experts on healthy living, nutrition, medical advice and more.

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  • Discovery Health
    Discovery Health answered:
    About 35 percent of the population never develops wisdom teeth, which may be an indicator that they are becoming obsolete. Some experts theorize that wisdom teeth eventually will disappear, but there are a few unknowns in the equation.

    Scientists are not certain about the role that DNA plays in...Read More
  • Discovery Health
    Discovery Health answered:
    A bonded-bridge is used to replace a missing tooth in less time and for less money than a porcelain bridge or an implant. The bonded bridge basically is a resin or porcelain tooth that has resin or metal wings on each side. It is an ideal fix for a missing tooth in the front of the mouth (biting...Read More
  • Discovery Health
    Discovery Health answered:
    Tooth shaping involves removing a small amount (usually 1 to 2 millimeters) of the tooth's enamel. Tooth shaping can shorten teeth that look too long, can round off pointed teeth and can help create a smile that gently follows the contour of the lower lip. Tooth shaping procedures are quick and p...Read More
  • Discovery Health
    Discovery Health answered:
    After a dental hygienist cleans your teeth, the dentist will come in to examine them. Out of nowhere, he or she rattles off alpha-numeric jargon: "3MOD," "5DO," "13MFD" and so on. The dentist is using a form of dental shorthand.

    Numbers represent teeth that have cavities or other problems. The...Read More
  • Discovery Health
    Discovery Health answered:
    Gum-lifts (also called a gingivectomy) involve the removal of gum to make teeth appear longer and to make the gum-line even. People whose gums tend to cover the front teeth or those whose upper lip comes up high when they smile often become self-conscious about their "gummy" smile. Uneven gum-lines...Read More
  • Discovery Health
    Discovery Health answered:
    Porcelain Laminate Veneers, or more simply called "veneers", are custom-made porcelain wafers a dentist places over the fronts of teeth to enhance their appearance or to repair damage. Veneers can change a person's smile dramatically and help to improve his or her self-confidence. In the 1920's and 1...Read More
  • Discovery Health
    Discovery Health answered:
    Composite, resin, or white fillings have been in use for about 20 years. Composite fillings are made from an organic polymer called bisphenol-A-glycidyl methacrylate (BIS-GMA). They also contain inorganic particles including quartz, borosilicate glass and lithium aluminum silicate.

    As advantages,...Read More
  • Discovery Health
    Discovery Health answered:
    When someone gets "plaque" on their teeth, they are getting a "film of bacteria." These bacteria stick to teeth. The bacteria then create acid as a by-product of their metabolism. That acid can eat through the tooth's enamel causing a cavity -- a hole through the enamel.

    A tooth has three parts:...Read More
  • Discovery Health
    Discovery Health answered:
    Sometimes changes in your diet, changes in your lifestyle and an increase in exercise are not enough to reduce your cholesterol.

    If that is your situation, your doctor may consider prescribing medication to lower your cholesterol. The decision to medicate a patient is often based on high levels...Read More
  • Discovery Health
    Discovery Health answered:
    Gold commonly is used as an inlay for dental fillings. It is not used in its pure form. It is used as an alloy containing metals including copper, silver, platinum, palladium, and zinc. Still, the inlays contain about 75 percent real gold.
    Gold is quite durable, fairly aesthetic and does not damage the opposing...Read More
  • Discovery Health
    Discovery Health answered:
    Yes. Forgiving is a process. Start by realizing you are in charge of your emotions. You can't control what others do, but you can control how you react to their actions. You don't have to confront the other person to forgive him - and you don't have to forget. In fact, remembering a hurt can keep you...Read More
  • Discovery Health
    Discovery Health answered:

    The U.S. Food and Drug Administration approved an emergency contraceptive to be sold over the counter to women at least 17 years old. The drug's generic name is levonorgestrel. It's also known by the brand name, Plan B. Levonorgestrel disrupts the woman's natural hormonal cycle. (Another option,

    ...Read More
  • Discovery Health
    Discovery Health answered:
    Dr. Lydie Hazan talks about diet sodas, their high sodium content and lack of nutritional value. Watch this video from Discovery Health.


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  • Discovery Health
    Discovery Health answered:
    Alcohol affects older people more intensely than younger people because of changes in body chemistry as we age. So you might not know your limits as well as you once did. For seniors, alcohol can increase the risk of falls and car crashes. Plus, alcohol can wreak havoc with medications, negating...Read More