It�s been a known fact that most people are afraid to go to the dentist to fix a bad set of teeth. You may even have a hard time bringing your kid along to the dentist to have his protruding upper teeth checked. A lot of people may not know this but there�s a special dentist who fixes teeth irregularities through the use of retainers or braces. An orthodontist is a dentist specialist who has the skills that are required to treat the misalignment of teeth and facial development through the use of braces and other appropriate orthodontic appliances.