A teeth prosthesis for mounting thereon a member having a set of teeth has at least three implants, each implant having opposite ends, one end of each implant being anchored in a bone of a maxilla while an opposite end projects out of a gingiva and defines a head. A customized connecting bar is also provided, the connecting bar being shaped and sized to substantially conform to and face the gingiva and fastened to the implants. A pair of mating bars having standardized sizes and shapes are also provided, consisting of a meso-bar fastened to the connecting bar and an iso-bar removably attached to the meso-bar through an attachment. The teeth prosthesis of the present invention is more economical to produce than prior art devices since it makes use of customized components and only the connecting bar is adjusted for a specific person.