Hello, I suggest that you consider the use of a nightguard appliance since you were aware of grinding your teeth. Consult a dentist and have one professionally made at your dental office. There are some over-the-counter types that are made of a soft material and bulky. The cost is less and you could use this on a trial basis to see if you have relief from use of a guard. Continued grinding of your teeth will cause excess wear and you will risk fracturing teeth or damage to your TMJ. Are there other medications that you could consider since you are experiencing this known side effect? Are you up to date with your dental exam? Grinding teeth can be due to your bite being out of alignment. Please make sure to have this checked. Keep in mind that you may have had what is called a mini stroke. You report that a piece of plaque is missing based on a diagnostic test. You may be unaware of this condition. Are you investigating further other vessels for an excess buildup on plaque to avoid an increased risk of a stroke in the future? Taking steps to reduce plaque buildup is a good thing. Missing plaque raises the suggestion of a possible stroke may be what the doctor is trying to say. Maybe the wording used has to do with insurance submission. The doctors will not and should notcommit fraud ,but are trying to explain your condition in medical terms that may sound alarming to you. This is my thought from your description. You should continue treatment with a doctor that you are most comfortable with and consider some additional suggestions after providing a full update on your history and medications to another doctor. I hope my suggestions are useful and hope you can resolve your condition. Thank you for your inquiry.