Clinical Performance of Fiber-Reinforced Dentin Replacement Materials

Inclusion Criteria: * having good oral hygiene. * having at least 3 posterior teeth with moderate to large primary proximal carious lesions (score 4 or 5 ICDAS). * ranging in age from 20 to 40 years. * with normal occlusion. * accepting to participate in the study by signing an Arabic-written consent according to the regulations of the Mansoura University Ethical Committee. Exclusion Criteria: * bad oral hygiene. * severe chronic periodontitis. * having installed orthodontic appliances. * abnormal occlusion. * parafunctional habits or allergic reaction to any of the materials used in the study. * teeth with irreversible pulpitis or non-vital teeth. * fractured or cracked teeth. previously restored teeth. * teeth with deep sub-gingival cavity margins.