stone model, but the silicone impression is left in place in order to establish the bite relationships (9A) with the stone model representing the upper arch of teeth. The implant is designed and cast in a surgical metal. The design is such, that it does not cross over the alveolar crest anteriorly, near the remaining teeth, where there usually exists alveolar bone from the intermittant stretching of the periodontal membrane at the disto-proximal surface of the tooth nearest the edentulous area (10). Lingually, the grooves give stability to the implant and resist the lateral thrusts of the tongue from pushing or lifting the implant buccally and off the ridge (11). Buccally, it contains a fenestrated buccal peripheral strut along the external oblique ridge, which allows for the mucoperiosteal tissues to re-attach to the bone in between the struts, also being that it is broader than the usual sized solid strut it resists "settling" of the implant (12). The strut becomes solid and narrower as it circumvents the mental foramen and remains solid along the inferior border of the mandible above the undercut area. At the second surgical visit, either the same day, next day, or preferably three to four weeks later, the tissues are once again reflected and the implant is seated into place (13). Sometimes it is necessary to use a stabilizing screw through a specially designed inset, made through the buccal peripheral strut and into the bone in the external oblique ridge (14) . The tissues are sutured closed (15) . Five to seven days later, the sutures are removed (16). When the tissues are thoroughly healed, a full mouth elastic impression is taken (17), and the final fixed prosthesis is fabricated on the model (18), and cemented into correct position (19) .

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