The nature of the stains as well as the severity of the discoloration determines the degree of improvement after the treatment. When your teeth become brown or yellow due to coffee, tea, or smoking, stains will generally lighten four to five shades. Gray teeth caused by natural pigmentation or use of antibiotics will lighten two to three shades. The dentist could also prescribe tricyclic antidepressants, Cortico steroids, and muscle relaxants, which should be taken in moderation and in care as they could be highly addicting. There are also some types of devices that are designed to correct improper TMJ conditions. For instance, a bite guard will have to be worn at night when sleeping to effectively curtail unnecessary grinding of the teeth. The number of qualified dentists performing the activity is still low, but through the years, more and more dentists are undergoing post-graduate courses and training so they could very well conduct the procedure. Take note that dentists with post-graduate degrees are the only ones qualified and skilled to perform the procedure. These guys can be more expensive and the procedures may have some add-on costs but you can be sure that they know what they are doing. Remember that although all dentists have the skills and the technical knowhow, only a few have the aesthetic eye to actually create a perfect smile. Cosmetic dentistry is a field that is slowly growing in the country. What they need is to look beautiful if they want to make it big in the TV or the film industry. Thus, there are many entertainers and models who undergo cosmetic dentistry to imprve their smile. A great set of teeth will do wonders to a person s appearance. 2. Salespeople Their job is to sell products and part of the package of selling is to have a pleasing personality, someone who is fun to be with and yes, great to look at. These dental bridges may last from 10 to 20 years. Invisalign Invisalign is a new orthodontic treatment system in straightening teeth using clear plastic molds (aligners). Invisalign retainers are worn 24 hours a day (except during meals). The entire procedure is repeated until the teeth are correctly in place.