Radiographic Comparative Study between Two Types of Implant Supported Mandibular Overdenture

This study was performed to compare between two types of implant supported overdentures, with and without attachments. Methods: Fourteen completely edentulous patients received two implants in the canine region and loaded 3 months thereafter. Patients have been grouped into two groups; group Iconsisted of seven patients with two ball attachments and group II seven patients with support only (dome shaped).All patients have been evaluated for bone density and bone height changes around the implants at 0,6 and 12 months after loading. Results: Comparing the two groups throughout the whole study period, there was no statistically significant difference between them regarding the effect of treatment. Conclusion: Within the limitation of this study, the ball attachment and the dome shaped abutment used with implant retained/or supported overdenture prostheses did not affect the response of the tissues surrounding the implant.