634 Theories and techniques of oral implantology

Fig. 15-13. A, The anterior quadrant is completed with heat-curing acrylic technique. B, The finished acrylic anterior quadrant is screwed into the template.

the finished prosthesis and narrow ridge implants in position.

Case 2

Restoring centric occlusion by occlusal reconstruction with the aid of vent-plants

The most striking form of mandibular malposition is prognathism, sometimes called functional mesiocclusion. In this condition the mandible has been shifted to a forced, protruded position that is the only comfortable relationship of the jaws. The lower anterior teeth are labial to the uppers, some-times completely covering them, and usually the lower posteriors are buccal to the upper posterior teeth. Temporomandibular joint disturbances can occur in conjunction with prognathism.

In some cases of mesiocclusion the anterior teeth can be restored to an edge-to-edge relationship. This

Fig. 15-15. Two narrow ridge type implants are then screwed into position.

A

B

Fig. 15-14. The tissue in the anterior portion of the maxilla is incised and reflected and a narrow sized twist drill is carefully rotated into the narrow bone ridge to its proper depth.

Fig. 15-16. After healing around the two implants has been completed, the framework is cemented into position with hard cement.