I was getting a pain in my neck and behind my ear, and my doctor, who thoroughly examined me suggested that perhaps my teeth were the cause (I do have sensitive gums and dodgy teeth, which are looked after regularly). I already had a dental appointment, with an NHS dentist and saw a foreign lady who shouted at me because I said I was deaf, assured me that my teeth were "Very good". After about a fortnight, I was still not happy, my mouth was aching, so I asked for another appointment, and was given an appointment with a mature man who was obviously from this country, he again said there is nothing wrong. I was charged for both these appointments. I have since had another appointment asking about my dentures, in case these are causing the trouble, not so, and in this case no charge was made. Still have an aching face, which I can only assume is because I clench my teeth.