Today is day 4 of p stim and I'm due to have it removed tomorrow. Today I had a dental appointment for some fillings and it could not have gone worse, the novacaine did not have its normal effect and the nitrous oxide had absolutely no effect on me. We had to stop mid procedure and reschedule. I have never had any problems before with either novacaine or nitrous oxide so my dentist and I can only wonder if this pstim device is having some sort of unexpected side effect that is affecting me. If you have a pstim I would recommend telling your dentist about it well before hand or just waiting until you are in between device cycles. I don't like going to the dentist but i have always been able to get through it, today was tantamount to torture and I hope no one else has this horrible experience. Also as mentioned in my previous post my patience level is near zero and I'm snipping at everyone which is not normal for me.