In some but not all cases, bruxism can be triggered by dental issues such as an abnormal bite or misaligned teeth but there are other non-dental problems that may be causing the problem. Some common causes of bruxism are:
The additional pressure put on the teeth and jaws by habitual clenching and grinding can lead to tooth fractures, gum inflammation and jaw pain and can actually wear down the teeth to a fraction of their proper size.
Although bruxism may be caused by non-dental factors, it should always be discussed with the dentist who can determine the exact causes of the problem and devise a suitable treatment plan to avoid serious dental issues in the future.
A detailed article on the most common causes of bruxism can be read at https://yourdentalhealthresource.com/why-do-we-grind-our-teeth/