Composite fillings are a common type of material, as they match the color of your teeth. The material that makes up the composite filling is mixed then placed directly in the cavity, where it hardens. They last several years, although composite isn t recommended for large cavities, or areas where they may chip. When you look at dental floss, you ll notice there are two types - nylon and single filament. You can get nylon either waxed or un-waxed, in several different flavors. Nylon floss is made up of several strands of nylon material, meaning that it can shred, tear, or snag between the teeth if it gets caught on sharp teeth. Dry mouth is very common, and is normally the result of medications, illness, and radiation treatment. Tobacco users will also suffer from dry mouth, as the tobacco will use up the saliva in the mouth and leave the user with nothing to keep his or her mouth moist. Cavities are a very serious situation, and if left untreated, can result in the destruction of the tooth. The tissue in the pulp is kept alive by the blood vessels that come from the tip of the root and travel along the root canal into the tooth. Decay is the main reason for pulp in the tooth dying. Once the decay has reached the pulp, it will keep eating away until the pulp has died. Once it dies, the toxins from the decay will be released into the root tip and make it s way into the jawbone. If you have gingivitis and you don t do something about it, it could lead to periodontal disease. Those who don t treat gingivitis or those who keep poor oral hygiene habits, will normally end up with periodontal disease. Periodontal disease is a condition in which the bone and surrounding structures are destroyed. Whenever you encounter a dental emergency, you shouldn t hesitate to contact a dentist immediately. Your dentist will be able to assist you, fix the problem, and stop the pain. Dental emergencies can happen at any time, so you should always the emergency number of a dentist who will be there at a moments notice.