Purpose: To compare and evaluate the effect of two different occlusal schemes (lingualized and monoplane occlusion) on the bone height changes in immediate loaded implant-retained Mandibular overdenture with locator attachment Materials and Methods: Twenty completely edentulous patients received two dental implants inserted in the Mandibular cuspids regions retaining an overdenture using locator attachment and they were divided into two equal groups. Group I were received overdenture with monoplane occlusal design, and Group II patients were received overdenture with lingualized occlusal design. Marginal bone height around implants was evaluated using Cone Beam Computed Tomography (CBCT) after 1 week, 6 months and 12 months of overdenture delivery. Results: There was no statistically significant difference recorded between lingualized and monoplane occlusal scheme in implants retaining a Mandibular overdentures using locator attachment.