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.
Key Findings. 1  Illegal immigration costs U.S. taxpayers about $113 billion a year at the federal, state and local level. 2  The annual outlay that illegal aliens cost U.S. taxpayers is an average amount per native-headed household of $1,117.