Abstract: Patent of invention of a precision device for attaching removable dental prosthesis, designed for the upper and lower dental arch free ends, consisting of a fixed male member and a removable female member, capable of absorbing, when engaged through an overlapping movement, all masticatory force due to gingival occlusive movement and therefore transferring it in a distributed manner over the mucous membrane on which the removable prosthetic portion is seated, this effect being cause by a dampening element located in the male member, member being made of a rigid material, of little thickness, formed in an approximately rectagular shape, there being two cavities on one of its faces and there being another cavity on the other face, there being, joined to cavity, a slit which engages spring inside said cavity; member consists also of a hollow rigid material piece, whose inner shape is the same as member there being on the inner walls of said member two pins and a recurved pin, positioned so that, during overlappin