###Human: What can be done for pain in and around left molar, TMJ and ear caused by teeth grinding? ###Assistant: Hi. The grinding teeth at night usually come from stress or psychological problems so you should visit a dentist near to you in order to get a night guard to protect grinding teeth at night. At the same time, you should consult with your psychiatric physician to know the cause and the origin of the grinding that why it comes at night. The night guard is a plastic impression that covers the crown of your all teeth. You should wear at night when you are sleeping and you will remove when you wake up in the morning. It would be good to attach the photo of your teeth.