Dentures are removable appliances that can replace missing teeth and help restore your smile. If you’ve lost all of your natural teeth, whether from gum disease, tooth decay or injury, replacing missing teeth will benefit your appearance and your health. That’s because dentures make it easier to eat and speak better than you could without teeth—things that people often take for granted.
When you lose all of your teeth, facial muscles can sag, making you look older. Dentures can help fill out the appearance of your face and profile. They can be made to closely resemble your natural teeth so that your appearance does not change much. Dentures may even improve the look of your smile.
New dentures may feel awkward for a few weeks until you become accustomed to them. They may feel loose while the muscles of your cheek and tongue learn to keep them in place. It is not unusual to experience minor irritation or soreness. You may find that saliva flow temporarily increases. As your mouth becomes accustomed to them, these problems should go away. Follow-up appointments with the dentist are generally needed after a denture is inserted so the fit can be checked and adjusted. If any problem persists, particularly irritation or soreness, be sure to consult your dentist.
Even if you wear full dentures, you still have to practice good dental hygiene. Brush your gums, tongue and roof of your mouth every morning with a soft-bristled brush before you insert your dentures to stimulate circulation in your tissues and help remove plaque.
If you have any questions about your dentures, or if they stop fitting well or become damaged, contact your dentist. Be sure to schedule regular dental checkups, too. The dentist will examine your mouth to see if yours continue to fit properly.
**(source: http://www.mouthhealthy.org/en/az-topics/d/dentures )