biological and mechanical effect of different types of attachments on supporting structures in implant retained mandibular overdenture a Randomized clinical study

Objective: To compare between implant retained overdenture with two different attachments by measuring : Retention. Bone changes radiographic evaluation. Subjects and Methods: Eight completely edentulous patients were selected from the Outpatient Clinic of Prosthodontic Department; Faculty Dental medicine, Al Azhar University classified into equal groups. Each patient in groups received implants placed mandibular canine-premolar region bilaterally. Group (1): four using equator attachments. (2): magnet study was randomized controlled trial Calculated samples. type randomization that Block The out comes assessor blinded as investigators didn’t know attachment before retention or amount bone resorption Results: Results revealed that, there no statistically significant difference loss during follow up period, mean values at base line after 3 months. But 6 months; Magnet showed significantly lower than Equator attachment. By time a decrease rather locator Conclusion: use supported overdentures leads same effect on crestal resorption. At beginning have quality some its