Subgingival Clamp Versus Retraction Cord in Cervical Lesions in Term of Technique Sensitivity and Gingival Health

Inclusion Criteria: * Subject not less than 18 years of age. * Males or females. * Have at least one carious or non-carious cervical lesion. * Cervical lesions should be equi-gingival or subgingival. * Can comply to oral hygiene measures or with good oral hygiene. * Have sufficient cognitive ability to understand consent procedures. * Vital upper or lower teeth with no signs or symptoms of irreversible pulpitis. * Clinically healthy gingiva and periodontium. * No evidence of attachment loss, bleeding on probing, or plaque accumulation. Exclusion criteria: * Exclusion Criteria: * Patients less than 18 years old. * Disabilities (mental health conditions, intellectual disability and physical disabilities). * Systemic diseases or severe medically compromised. (Cardiovascular disorder, diabetes, -hypertensive, epileptic. * Lack of compliance. * Gingival hyperplasia, blood disorder. * Attachment loss signs of periodontal disease. * Patients contra-indicated for rubber dam placement (Asthmatic patient, mouth breather, -- partially erupted tooth, extremely malposed teeth and latex allergy). * Periapical pathosis or signs of pulpal posterior or anterior pathology. * Non-vital tooth. * Endodontically treated tooth. * Sever periodontal affection. * Tooth indicated for extraction.