One-year Clinical Evaluation of Bulk-fill Versus Conventional Incremental Posterior Restoration by FDI Criteria

Inclusion Criteria: * Good oral hygiene.Patients must show no signs of orofacial pain. The presence of molar teeth requiring composite restorations for the treatment of primary carious lesions Exclusion Criteria: * Teeth with abnormal periapical anatomy or caries that will be likely to result in very deep restorations. Teeth with old restorations or severely destructed dental crowns.Tempro-mandibular joint problems involving symptomatic pain.Pregnancy or breast feeding, acute and chronic systemic diseases, immune-compromised patients