Abstract: A method for installing a permanent bridge over a gincival crest between a pair of abutment teeth posterior to the canines, comprising a) providing a rigid infrastructure having two wings, the infrastructure being sized to extend in between and inside the abutment teeth; b) processing the abutment teeth to form retentive dental cavities large enough to receive the wings of the infrastructure; c) applying a resistant composite to the bottom of the infrastructure, curing the resistant composite that is so applied so as to fix the resistant composite to the infrastructure and thus to form a bridge, processing the bridge to remove imperfections and placing each of the wings of the infrastructure into the corresponding cavity to ensure that the so formed bridge fits over the gingival crest; d) fixing the wings of the infrastructure embedded into the formed bridge to the dental cavities of the abutment teeth by means of an adhesive; and e) filling the occlusal part of the bridge with an additional resistant composi