Jaw joint problems appear most often in adults between the ages of 20 and 40. This is the age at which many people decide to start orthodontic treatment, so sometimes the two simply happen at the same time. Sometimes orthodontic tooth movement can turn out to be a trigger for the condition, but bear in mind that the problem is multifactorial and needs a combination of causes to develop. The most common cause found in jaw joint pain and problems is bruxism (clenching and grinding of the teeth). This pathological reflex should not be underestimated.
This answer is for general information. Your own case needs an examination by an orthodontist.