Maxillary endosseous implant interventions 457

Fig. 10-267. The pins were secured with acrylic cores that were then prepared for full coverage restorations.

Fig. 10-268. A full arch rubber base impression was taken.

it from the alveolar crest in a palatolingual direction to engage the septum. If it had been placed perpendicular to the alveolar crest, the chances of its entering the vestibulum would have been great. The hollow threaded vent-plant was inserted until slightly over 1 mm. protruded into the oral cavity.

A full arch maxillary impression in plaster was taken. A duplicate hollow threaded shaft was put in the plaster index and a master stone model was poured, allowed to set, and then separated from the plaster index. The hardened stone model contained the duplicate shaft in its proper position.

An outline of the scalloped template was marked directly on the stone model with a pencil. In those situations where fixed dentures are contemplated, this outline is planned by using properly

Fig. 10-269. A, A superstructure consisting of four gold copings connected to each other with a connecting bar. Soldered to the two anterior copings (arrows) were Ceka male attachments. (From Linkow, L. I.: Maxillary endosseous implants, Dent. Concepts 10 [1] :14-24, 1966.) B, The two female attachments are seen attached to the male attachments. The female attachments will be processed to the palateless denture.

Fig. 10-270. The superstructure is tried in position. (From Linkow, L. I.: Maxillary endosseous implants, Dent. Concepts 10 [1] :14-24, 1966.)