Malocclusion and bruxism are the most common causes of TMJ disorders. 1  Emotional stress is often the underlying cause of a TMJ disorder, as it can contribute to people either consciously or unconsciously tightening facial and jaw muscles and grinding or clenching their teeth.
1 Why is illegal immigration a controversial issue A) People think that the current laws on immigration address the issue well. B) There are far fewer illegal immigrants each year than naturalized citizens. 2  Why is illegal immigration a controversial issue A) People think that the current laws on immigration address the issue well.
The Immigration Debate. The most important and avidly debated effects of undocumented immigration involve the United Statesâ economy and labor force. It is estimated that there are 12 million undocumented immigrants in the United States today, and their impact on the economy can be perceived as positive as well as negative.