Mandibular endosseous implant interventions 339

Fig. 9-14. A, A specially designed interchangeable gold coping fits over the vent-plant shafts. B, The copings are fitted over the protruding implants. (B, From Linkow, L. I.: The radiographic role in endosseous implant interventions, Chron. Omaha Dent. Soc. 29[10]:304-311, 1966.)

Fig. 9-16. A plaster index is seen in the metal tray. (From Linkow, L. I.: The radiographic role in endosseous implant interventions, Chron. Omaha Dent. Soc. 29[10]:304-311, 1966.)

Fig. 9-15. A wax interocclusal record of centric relation is taken.

Fig. 9-17. Holes are made through the acrylic splint guided by the indelible pencil markings that were made over the occlusal surfaces of the implants. (From Linkow, L. I.: The radiographic role in endosseous implant interventions, Chron. Omaha Dent. Soc. 29 [10]:304-311, 1966.)

stone model poured into the index. This eliminated a double casting technique.

To fit the temporary prefabricated acrylic splint into position over the natural tooth abutments and implant shafts, the occlusal surfaces of the shafts were marked with indelible pencil. The markings were transferred to the tissue-bearing surfaces of the acrylic splint (Fig. 9-17). With a vulcanite bur, two holes were made to accommodate the protruding implant shafts. These holes were very generous and larger than the shafts to ensure an easy fit. Once