question: Nothing works for sensitive teeth.  Been to two ntdentists.  Have used sensodyne, Rx toothpaste, had mouthguard made for clinching, then teeth trays for fluoride/potassium nitrate treatmes.  Nothing has helped.  Have never had teeth problems until last cleaning over a year ago.  Finally changed dentist and tried gluma and in office fluoride treatment still cannot drink anything above room temperature or eat anything cold.  51 year old post menopausal female