Hello and thank you for using HCM. I carefully read your question and i understand your concern.I will tray to explain you something. You might experience irregular heart beat for different reasons. First of all it is necessary to know what is this irregular heart beat. It might be an extra-systolic beat.this is an electrical impulse that generate from parts of the heart different from normal sinus rhythm, causing a skipped beat that you feel like irregular rhythm. Or it might be a real irregular rhythm, when your heart beats in a chaotic way, what we call atrial fibrillation. You might have this rhythm issues because of different reasons from simple emotional stress to pathology es like anemia, hyperthyroidism ect A hole in your tooth does not cause irregular heart beat. Only if you have done an infection in your tooth that might generate an inflammatory process that might give a little sinus tachycardia, meaning that your heart beats over 100 beats for minute. So, my opinion as a cardiologist is that if you continue feeling this irregular beats you should see what are this making some examinations like blood sample, thyroid hormones, electrocardiogram and of course a holter monitoring to see the rhythm tendency. You already do not drink coffee any more and this is a good think because exacerbates your symptoms. Hope i was helpful. Best regards