Maxillary endosseous implant interventions 405

Fig. 10-73. A Panorex of the completed case,

Fig. 10-74. Another case shows the female precision attachment soldered distally to the last abutment porcelain crown. The template extends distally to attachment. The super-structure with its male attachment is also seen. Arrows point to male and female precision attachments.

Fig. 10-75. An anterior porcelain-baked-to-metal fixed partial denture existed prior to implant insertions. In order not to have to destroy the bridge, an atypical inlay preparation (arrow) was accomplished on the upper left cuspid crown.

lain-baked-to-metal bridge (Fig. 10-75) . The right side was restored conventionally, but implants were needed in the left as posterior abutments.

To prepare for the implant-supported restoration, the left cuspid casting was prepared for an atypical Class II inlay preparation with a fairly deep lingual shoulder, the location of which was determined by the contour of the gold crown in the area. (It was not necessary in this case to make this in the gingival third of the crown. Also, if possible, a few parallel vertical pits may be drilled through the occlusal

pulpal floor of the Class II preparation.) Caution was necessary while preparing the previously made crown to prevent exposing the pulp chamber of the tooth.

An accurate impression of the inlay preparation was taken and the inlay fabricated. The impression also included the entire edentulous area for the fabrication of a temporary acrylic splint.

On the second visit, the inlay was tried in the prepared cuspid crown restoration. After checking for accurate fit, it was removed and the implants