Do you have occasional tooth twinges? Do you notice sudden, short bursts of sensitivity? If so, it could be a sign that your teeth have vulnerable areas of exposed dentin, a primary cause of sensitivity. Sensodyne® Repair & Protect toothpaste can actually repair sensitive teeth*. The active ingredient in Sensodyne® Repair & Protect, stannous fluoride, builds a repairing layer over the vulnerable areas of your teeth, to help protect from pain. With twice daily brushing, Sensodyne® Repair & Protect provides proven effective lasting relief from the twinge of sensitivity and offers everyday cavity protection with fluoride.