Objectives: The purpose of the present study was to evaluate arthroscopic injection of ethanolamine oleate as sclerosing solution in treatment of temporomandibular joint disorder (disc displacement with reduction.
Material and methods: Eight patients 4 males and 4 females were involved in the study, the age of which ranged from 18 to 38 years with a mean of 25.7 years. under general anesthesia, using a scalpel to make an opening in the skin .Sharp trocar then blunt trocar 3- washing the joint with a salt solutation to clear the vision, locating the retrodiscal fibers and sclorsing agent be injected, by using one c.c. tuberculin plastic syringe with 26 gauge and 1.5 inch bevel steel needle was used, the needle filled with .2 ml of ethanolamine oleate 5% and .1 ml of local anaesthetic without vasoconstrictor, mepivacaine hydro-chloride 2%. Postoperative medication, Patient were instructed to take a postoperative medical regimen. Patients were evaluated after 6 months for adiographic evaluation in pain score, inter incisal istance, muscles tenderness, lateral movement, clicking, maximum protrusion, and bite registration anterior and posterior .