Crest® Sensi-Namel™ Scope® Fresh Flavor Toothpaste for Sensitive Teeth and Cavity Prevention. Same clinically proven active ingredients as Sensodyne® Pronamel®†. Strengthens weakened enamel. Protect from acids*. Sensitivity relief. Gentle whitening. Uses:. When used regularly, builds increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets, or contact. Aids in the prevention of cavities. Crest sensi-namel strengthens weakened enamel. Maximum strength‡. Sensitivity relief + enamel protection. *Protects against the effect of plaque acids to help prevent cavities.