- At Visit 1 (Screening): Self-reported history of dentinal hypersensitivity (DH) lasting more than six months but not more than 10 years; Minimum of 20 natural teeth; Minimum of 2 accessible non-adjacent teeth (incisors, canines, pre-molars), preferably in different quadrants, that meet all of the following criteria: Signs of facial/cervical gingival recession and/or signs of erosion or abrasion (EAR), tooth with MGI score =0 adjacent to the test area (exposed dentine) only and a clinical mobility of ≤1, tooth with signs of sensitivity measured by qualifying evaporative air assessment (Y/N response)