92 Theories and techniques of oral implantology

Pasqualini on hollow core implants

Purely to determine which type of implant—hollow core or solid cylinder—more advantageously utilizes bone's stabilizing potential, the Italian practitioner Pasqualini buried several implant designs in dogs' jaws (Fig. 4-14). His hollow designs varied in overall shape, and therefore method of insertion,

and in the amount of space in the open part of the implant (Fig. 4-15). Cross sections showed that bone grows close enough to the periphery of the implants to define their shapes (Fig. 4-16). In many of the cases, usually where the hollow portions were fairly large, bone grew completely through the hollow cores (Fig. 4-17).

Fig. 4-18. Chercheve's spiral-post implants in both the mandible and maxillae.

Fig. 4-19. Radiographs taken 3 years postoperatively. The implants are secure in bone and no pathologic areas are seen.