Comparative Evaluation of Direct Pulp Capping Between Deep and Extremely Deep Caries in Mature Permanent Mandibular Molars .

Inclusion Criteria: 1. The patient should be 18-40 years of age. 2. Patients with deep and extremely deep caries in permanent mandibular molars. 3. Deep caries lesion -Reaching the inner quarter of dentine on radiograph 4. Extremely deep caries lesion - Caries penetrating the entire thickness of dentin on radiograph. 5. Reversible pulpitis will be diagnosed clinically based on discomfort experienced by the participant when a stimulus such as cold or sweet is applied and goes away within a couple of seconds following removal of stimulus, with no significant radiographic changes in the periapical region of the suspect tooth and pain experienced is not spontaneous. 6. Tooth should give positive response to pulp sensibility testing. 7. Bleeding can be controlled with in 8 minutes. 8. Radiographic finding of periapical index (PAI) score ≤2. 9. Healthy periodontium (probing pocket depth ≤3 mm and mobility within normal limit). Exclusion criteria 1. Teeth with immature roots. 2. Internal/external resorption. 3. Patient experience spontaneous pain. 4. Negative response to vitality testing 5. No pulp exposure after complete caries excavation. 6. Signs of pulpal necrosis, insufficient bleeding after pulp exposure, sinus tract, swelling. 7. Bleeding could not be controlled in 8 minutes. 8. Pregnant women 9. Contributory medical history (alcoholism, smokers, diabetic, hypertension, drug dependency, Heart or valve disease, hepatitis, herpes, immunodeficiency diseases , infectious diseases, kidney or liver, migraine)