The Influence of Desensitizing Agent on Postoperative Sensitivity in Posterior Composite Restoration

Inclusion Criteria: * Patients having active primary class I carious lesions on vital molar teeth either in the middle or the inner third of dentin in the three quadrants of each patients. * Teeth having a positive reaction to vitality test (cold test), no signs of pulp inflammation, or spontaneous pain before treatment. * Preoperative radiographic record of the carious lesions. * Buccolingual width is no more than half the inter-cuspal distance Exclusion Criteria: * Excessive tooth wear due to clenching or abnormal habits. * Patients with direct occlusal contact by antagonist cusp (traumatic occlusion). * Patients with periodontal or gingival disease. * Patients using analgesics and/or anti-inflammatory medicine.