The permanent teeth are the second set of teeth that will last the rest of your life. They tend to be more yellow (and not just because of coffee) and are extremely hard. The final set of teeth is made up of 32 teeth, or 16 on each jaw. There are two central incisors for biting, two lateral incisors for biting, two canines for tearing and cutting, four premolars for chewing, and six molars for chewing. This section of our cosmetic dentistry information site provides you with some background into dental veneers, both composite veneers and porcelain veneers. Dental veneers, sometimes called tooth veneers, can be used to correct both color and shape problems. A dental bridge is a false tooth, known as a pontic, which is fused between two porcelain crowns to fill in the area left by a missing tooth. The two crowns holding it in place that are attached onto your teeth on each side of the false tooth. This is known as a fixed bridge. This procedure is used to replace one or more missing teeth. Fixed bridges cannot be taken out of your mouth as you might do with removable partial dentures. If you a space from a missing tooth, a bridge will be custom made to fill in the space with a false tooth. The false tooth is attached by the bridge to the two other teeth around the space - bridging them together. The most common method of teeth straightening remains standard orthodontic braces. Archwires, springs, and rubberbands apply pressure to the individual teeth by means of brackets that are glued onto their surface. Regular visits are required to the orthodontist in order to tighten wires as needed and make other adjustments. At each visit, the wires will be tightened slightly to renew pressure and push them toward their intended position. Additional wires, rubberbands, and headgear may be prescribed to help move the teeth into their ideal position as quickly as possible. When the teeth have all been repositioned, the brackets will be removed and a retainer must be worn to prevent relapse for some period of time.
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For men, hair loss is male pattern baldness. Yes, there are other types of hair loss, including rare conditions such as alopecia totalis and alopecia universalis, where the entire scalp and entire body, respectively, become completely bald due to a viral condition that is irreversible. There is also patch baldness, in which hair falls out in patches of the scalp. This is caused by stress or poor nutrition or adverse scalp conditions. But the hair will usually grow back once the cause has been rectified. New hair resulting from minoxidil use may be thinner and shorter than previous hair. But there can be enough regrowth for some people to hide their bald spots and have it blend with existing hair. New hair stops growing soon after you discontinue the use of minoxidil. If you experience minimal results within six months, your doctor may recommend discontinuing use. Side effects can include irritation of the scalp. Hair transplantation is a surgical modality used for the correction of androgenic alopecia, scarring alopecia, and other causes of permanent alopecia. The site from where the hair is taken is usually a fine scar line which is hidden by the permanent hair in that area. After the procedure there are tiny marks where the grafts have been placed. Initially there is some crusting over these areas (5-14 days) but after this, these areas are usually not detectable. Women with localized thinning on the top of their heads or thinning around the temples often make good candidates for hair transplantation. Prior to evaluation for hair transplantation, it is important for women to discuss your thinning hair with a dermatologist and/or endocrinologist to make sure there is no other treatable reason for the hair loss.
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Fear and anxiety are a normal--even essential--part of life. They prepare us for danger, creating physiological changes that enable us to effectively respond to a threat. Fear is very straightforward. It arises in response to immediate danger, so it is usually unexpected, very intense, and limited to the situation at hand. Your response to the fear, such as jumping out of the path of an oncoming car, quickly resolves the situation. Each anxiety disorder has its own distinct features, but they are all bound together by the common theme of excessive, irrational fear and dread. There's little doubt that all our thoughts and feelings are rooted in transmissions between nerve cells in the brain. These signals are passed from cell to cell by chemical neurotransmitters released at the synapse (tiny gap) between one cell and the next. An imbalance in these neurotransmitters can cause a corresponding shift in our thoughts. But is the reverse also true? Can a determined change in our thinking alter the chemistry in the brain? Many experts are convinced this is true; and behavioral therapy aimed at changing our reactions does, in fact, cure many problems. Indeed, for some disorders, such as phobias, this type of therapy remains the most effective alternative. Scientists are also conducting clinical trials to find the most effective ways of treating anxiety disorders. For example, one trial is examining how well medication and behavioral therapies work together and separately in the treatment of obsessive-compulsive disorder. Another trial is assessing the safety and efficacy of medication treatments for anxiety disorders in children and adolescents with co-occurring attention deficit hyperactivity disorder. For more information about clinical trials, for example the National Library of Medicine's clinical trials database.
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