Do braces causes tmj? i had a big problem with my teeth and had to wear braces for 6 years that moved my jaw about 2-3 cm

NO: As a general rule orthodontics usually is not the cause or the correction of tmd. There are of course exceptions, and it is true that certain orthodontic procedures can exacerbate joint issues, wearing elastics for one. By the way, braces without surgery cannot move your jaw an inch or more.

Possiby.: Moving teeth can cause a disharmony between the occlusion (the way the upper and lower teeth come together). This disharmony can cause on ongoing TMJ problem. Consult a dentist who is trained in evaluating the relationship of the lower jaw to the skull (upper teeth).

Braces can cause TMJ: The final joint seated position happens when you bite your teeth together. If the bite causes the joint to be shoved out of position (up and back) this is a dysfunctional and pathologic position. If orthodontics causes this bite, then orthodontics can be a cause of TMJ dysfunction. However, orthodontics done to stable joint positions can also be a means of correcting TMJ problems.

Maybe: Orthodontics have not been shown in research studies to either cause or cure tmd's. Tmj problems are rarelly if ever a result of how the teeth fit together. It has been suggested by some researchers that a chnge in the bite relationship may cause some suseptable individuals to develope some TMJ problems but they tend to resolve on their own over time.

POSSIBLE: Braces could possible be bring an already present TMJ problem to front.

6 years?: Wow...that is a long time to have braces. Movement of the teeth can possibly create a TMJ/TMD issue. There is a triad that often determines if a TMJ problem may develop- the teeth, the muscles and the jaw joints. If one changes or is off, then a potential TMJ problem can arise. I would suggest getting another opinion or 2.

Perhaps: If your jaw was moved 2-3 cm that may have stressed the TMJ. Consult with your orthodontist. See a TMJ expert. Any dentist can be a TMJ expert with the proper training and experience. Most commonly, oral surgeons, prosthodontists, and orofacial pain specialists. Ask your MD, your dentist and your dental society for referrals.