Inclusion Criteria:  a)Inclusion Criteria of participants:  Male or female gender. Only co-operative patients will be approved to participate in the trial. Medically free adult patients. The age range of the patients is 18-40 years. b)Inclusion Criteria of teeth: Small to moderate cervical lesion. Vital upper or lower teeth with no signs of irreversible pulpitis. Caries extension shouldn't exceed mesiodistal width and inciso(occluso)-gingival length not exceed incisal (occlusal) one third.  Exclusion Criteria:  a)Exclusion criteria of participants:  Allergic history concerning methacrylates Pregnancy Heavy smoking; xerostomia Lack of compliance Patients with disabilities. Patients having systemic diseases or severe medically compromised.  Patients with severe bruxism, clenching, or temporomandibular joint disorders.  b)Exclusion criteria of the teeth:  Deep defects (close to the pulp, less than 1 mm distance). Periapical pathology or signs of pulpal pathology. Possible prosthodontic restoration of teeth. Heavy occlusion and occlusal contacts or history of bruxism. Pulpitis, non-vital or endodontically treated teeth. Sever periodontal affection.