Sensodyne Repair & Protect Toothbrush Soft is for people with sensitive teeth. Gum recession and enamel wear can be caused by overbrushing, and over time this can lead to exposed dentine and sensitive teeth. Sensodyne Repair & Protect Toothbrush has bristles which flex on contact with the teeth and gums to help provide gentle cleaning. The outer bristles have tapered filaments that makes the soft tip even more flexible to help protect against overbrushing.