This study aims to rigorously assess the effectiveness of LPCGF in the management of internal disc displacement in patients with TMD through a randomized clinical trial. By comparing LPCGF therapy with conventional arthrocentesis, this research looks to provide robust evidence on the efficacy, safety, and potential role of (LPCGF) as an alternative therapeutic choice for IDD.

Inclusion Criteria:

• 1. Adults aged 18-45 years. 2. Patients scored as (ASA I).9 3. Presence of complete or nearly complete set of natural dentition with Angle class I occlusion. 4. Diagnosed with unilateral involvement of disc displacement, according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD).10 5. Symptoms include one or more of the following: pain, joint sounds, and limited mandibular movement (Maximum Mouth Opening< 40mm) 6. No prior surgical intervention for TMD. 7. Patient's willingness to participate and follow the study protocol.

Exclusion Criteria:

• 1. TMJ pathology related to mechanical deformities 2. Psychiatric problems or presence of systemic diseases that may affect healing (e.g., uncontrolled diabetes, autoimmune disorders, hematologic or neurologic disorders, inflammatory or connective tissue disorders as well as rheumatological or previous infectious diseases, head and neck cancer). 3. Patient unwilling or has contraindication to MRI 4. Previous injections or surgical interventions of the TMJ. 5. Concurrent use of anticoagulants or anti-inflammatory medications within the last 30 days. 6. Pregnant or breastfeeding women. 7. History of trauma or infection in the TMJ region. 8. Allergy to local anesthetics or other components used in the study. 9. Patients diagnosed with (Disc Displacement with reduction with no pain or limited mandibular movements).