No question but a comment on Sensodyne. On my dentist's recommendation, I started using Sensodyne for relatively minir Hit/cold sensitivity. Major nerve agitation quickly developed with aching in every tooth and even to my temples. I tried several different versions and the discomfort only intensified. After two months, in desperation, I stopped the use of Sensodyne and witin hour, all agitation and tooth aching has ceased. Sensodyne was the Tooth Devil. Never again!