Alignment problems are a common ailment of people that visit a dentist. Most of the time the alignment problems of the tooth or jaw are caught early by a general dentist. The dentist might treat the problem himself or refer the person to an orthodontist. An orthodontist is a specialist that knows extensive techniques on how to correct alignment problems of the jaw or teeth.
Braces are usually the treatment of choice for young patients. These braces are visible and can't be removed, but they are very effective in straightening the mouth so that it's possible to talk and eat normally. Appearance is generally improved also.
Adults and some young people choose a second option, one that has only been available for awhile now. Clear aligners, such as Invisalign, are removable and nearly invisible to the human eye, something that makes it possible for adults to feel comfortable wearing braces. Orthodontic problems can now be corrected at all ages for all people. There is no one that isn't able to get alignment problems taken care of in a discreet way. The fact that the clear aligner is removable helps people by making the device much more comfortable and tolerable.