Invivo Clinical Assessment of Dimethyl Sulfoxide in OT Primer Prior to Dental Adhesive

Inclusion Criteria: * Patients with Carious Cervical Lesions (CCL). * Co-operative patients approved to participate in the study. * Pulp is asymptomatic vital teeth. * Presence of favorable occlusion and teeth are in normal contact with the adjacent teeth. Exclusion Criteria: * Patients with Non-Carious Cervical Lesions (NCCL). * Xerostomia * Bruxism and visible wear facets in the posterior dentition. * Known inability to return for recall appointments. * Fractured or visibly cracked candidate tooth. * Current desensitizing therapy, including desensitizing dentifrices or other over-the-counter (OTC) products. * Long-term use of anti-inflammatory, analgesic, or psychotropic drugs. * Pregnancy or breast-feeding (potential conflicts with recall dates. * Allergies to ingredients of resin-based restorative materials. * Orthodontic appliance treatment within the previous three months. * Abutment teeth for fixed or removable prostheses. * Teeth or supporting structures with any symptomatic pathology. * Existing periodontal disease or periodontal surgery within the previous three months.