This study aimed to compare between three different treatment modalities for completely edentulous patients using electromyographic analysis for muscular activity of masseter and temporalis muscles. The three treatment modalities are conventional complete denture, ball attached implant supported mandibular overdenture and magnet attached implant supported mandibular overdenture. The results revealed that highest muscular activity for conventional denture which was significantly higher than the implant supported overdenture. There was non- significant difference between ball or magnet attached implant supported overdenture although ball attachment improves muscular activity.