Clinical and Radiographic Assessment of Platelet Rich Fibrin and Mineral Trioxide Aggregate as Pulp Capping Biomaterials

Inclusion Criteria: * Patient aged 15:40 years old. * Patients exhibiting pulp exposure (carious, traumatic, or mechanical) during management of active carious lesions with less than 2 mm of carious exposure. * Signs and symptoms indicative of pulp vitality, i.e. a positive response to thermal stimulation during a cold test. * periapical radiograph showing closed apex and normal periapex Exclusion Criteria: * Teeth with spontaneous pain or sensitivity to percussion (signs of irreversible pulpitis). * Teeth with periodontal lesions, internal or external root resorption, calcified canals, mobility of tooth, sinus opening, or abscessed tooth. * Non restorable tooth. * Radiographic examination revealed, interrupted or broken lamina dura, widened periodontal ligament space, periapical radiolucency. * Pulp bleeding that could not be controlled within 10 minutes using 2.5% sodium hypochlorite * Immune-compromised patients or with systemic medical disorders. * pregnant females