A Pilot Study to Substantiate the Use of the Jay Sensitivity Sensor Probe

Inclusion Criteria: * Willing and physically able to carry out all study procedures. * Willing to give written informed consent and complete a medical history form. * Have one hypersensitive tooth in two quadrants with exposed roots, which are anterior to the molars and demonstrate cervical erosion/abrasion or gingival recession, which have an air-blast hypersensitivity score of 2 or 3 on the Schiff sensitivity scale at Screening and a tactile hypersensitivity score of 10-60 grams of force using the Yeaple probe at baseline. * Willing to comply with the oral hygiene and food and drink restrictions. Exclusion Criteria: Individuals with the following conditions will not be eligible for participation in the study: * Subjects who have used anti sensitivity products in the 4 weeks prior to screening * Subjects likely to require the use of professional dentinal desensitising therapy during the study. * Subjects with an active oral ulcer (aphthous ulcer), or have similar experience within past 1 month. * Subjects whose indicator teeth have abnormal oral pathology, for example: * Extensive restoration. * Observable caries. * Observable cracked enamel. * Leaking fillings or other restorations. * Cracked Tooth Syndrome * Suspected pulp pathology/abscess/pulpitis. * Atypical facial pain * Any tooth surface adjacent to those surfaces under investigation, which in the opinion of the investigator have any other condition(s) that provide confusing symptoms to those of cervical dentine hypersensitivity. * Currently undergoing dental treatment, including orthodontic treatment. * Subjects who had vital bleaching * Investigational teeth are or are likely to become denture abutments during the course of the study. * Known allergies to toothpaste and serum ingredients, including the flavour components. * Obvious physical disability reducing tooth brushing ability. * Receiving concomitant medication/therapy that might affect dentine hypersensitivity, e.g. regular use of analgesics, anti-histamines, SSRI medication * Severe gingivitis, periodontitis and/or marked tooth mobility. * Gingival surgery in the previous six months. * Subjects with any serious concomitant diseases or medical or psychological conditions. * In the opinion of the investigator unable to comply fully with the trial requirements. * Participation in other dental clinical trials. * Pregnant or breastfeeding (Self-Reported) * Subjects who have participated in an oral care study within the previous 3 months. * Diabetic (both Type 1 and Type 2) * Previous history of rheumatic fever or heart valve pathology or require antibiotics for prophylaxis against bacterial endocarditis. * Medical condition(s) and/or regular use of any medication, which either could affect the scientific validity of the study or if the subject was to participate in the study could, affect their wellbeing. * Use of anticonvulsants; antihistamines; anti-depressants; sedatives; tranquilisers; anti-inflammatory drugs or daily analgesics. * Full or removable partial dentures. * The subject is an employee of Unilever or the site conducting the study.