Computer Guided Versus Conventional Surgical Removal of Deeply Impacted Mandibular Third Molar With Preservation of External Oblique Ridge

in patent have deeply impacted lower third molar ,dose computer guided enhance surgical outcome versus conventional surgical remove of wisdom teeth

P- Patient with deeply impacted mandibular molar I- Computer guided surgical cutting stent C- Conventional extraction O- Clinical outcome sound radiographic outcomes primary outcome \- pain : each patient well be asked to rate current and worst pain intensity on visual analogue scale (VAS ) of 0-10 with Zero being no pain and Ten corresponds to the worst pain. Secondary outcome * evaluation of maximum inter incisal opening: assessment of MMO will be performed by measuring the distance in mm between the incisal edges of the upper and lower central incisor by using tape graduated method. * evaluation of edema throw use nylon thread.