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.
Reproductive Rights and Abortion Abortion has been the single most contentious issue in the history of reproductive rights and has represented some of the greatest legal challenges. Abortions, for example, were legal and had been performed for thousands of years in U.S. societies long before the Constitution was adopted.