Teeth grinding or Bruxism, Connelly says, is very common in adults and is very destructive to the teeth -- causing them to become short and blunt, and sometimes resulting in jaw problems.
The most common causes? Misaligned teeth and stress. Connelly adds:
Orthodontic or restorative dentistry can correct alignment, and we can fabricate a custom a plastic guard for people to wear while they sleep to protect their teeth from the destructive forces our jaws can produce.
The NIH says people can also try things like physical therapy and daily relaxation techniques to both reduce stress overall and to train the muscles of the face and jaw to stay relaxed.
From The Huffington Post