< Topic > The jawbone/soft organization and the sutra mucous membrane element or between the contiguity parts of the fixture it was superior and the sutra mucous membrane element which makes lasting degree of unification possible is offered.Solutions It features that it is suitable to the necessary width of the soft organization which distance of the lengthwise which parallels to the contact surface of the part where it had become narrow in west form or inward in those which have the part which in order the sutra mucous membrane element decreases the necessary height, at the same time to make the capacity for being stabilized and retention the soft organization has become narrow in west form or inward, adjoins at least.< Selective figure > Figure 1