Background and objectives: To compare the medium- to long-term mechanical behavior of overdentures with two different retention systems: overdentures with Locator® axial retention. and vertical insertion overdentures with bar retention. used to rehabilitate edentulous maxillar. Material and Methods: This prospective study assessed patients presenting complete maxillary edentulism. https://safeersappliancers.shop/product-category/siemens-hb878gbb6b-iq700-built-in-oven-electric-black-60cm/