Evaluation of Different Orthodontic Tooth Movements Assisted With Injectable Platelet Rich Fibrin

Inclusion Criteria:An age range from 15-22 years. Severe crowding or protrusion requiring 1st premolars extractions followed by symmetrical canine retraction. All permanent teeth present, 3rd molars are excluded. Good oral and general health. No systemic disease/medication that could interfere with orthodontic tooth movement. No previous orthodontic treatment. \- Exclusion Criteria:Patient diagnosed to have an indication for non-extraction approach. Poor oral hygiene or periodontally compromised patient. Patient with craniofacial anomalies or previous history of trauma, bruxism or parafunctions. \-