One 3.4 oz tube of sensodyne pronamel clinical enamel strength deep clean toothpaste 3x stronger enamel (2) and 24/7 enamel protection to help prevent against early-stage cavities and help stop early-stage decay with twice daily brushing backed by 17 years of enamel science and ...One 3.4 oz tube of sensodyne pronamel clinical enamel strength deep clean toothpaste 3x stronger enamel (2) and 24/7 enamel protection to help prevent against early-stage cavities and help stop early-stage decay with twice daily brushing backed by 17 years of enamel science and helps to protect teeth for life with twice daily brushing enamel safe, advanced cleaning system for 55% more effective cleaning action (4) and repairs 66% of micro-damage (3) in acid softened enamel with twice daily.