Clinical Evaluation of Efficacy of Shield Force Plus Varnish VS Sodium Fluoride on Dentin Hypersensitivity

Inclusion Criteria: * Patients with good oral hygiene. * The age range of 18-65 years. * Patients from both gender. * Patients suffering from pain due to dentin hypersensitivity. * Patients with sound first upper molars. Exclusion Criteria: * Patients with teeth exhibiting mobility (grade 2 or 3). * Patients with constant use of analgesic, carious lesions, fractured teeth, defective restorations or prosthesis. * Patients with orthodontics appliance. * Patients with allergy sufferers with any of the materials will be used in the study as shield force plus and sodium fluoride. * Patients with carious, crowned upper first molars.