Abstract
We designed a new implant to prevent the downward growth of epithelium and to achieve a more rigid initial fixation. As this implant system has dead space in the cervical portion, we studied histologically the bone regeneration in the dead space and also the possibility of preventing the downward growth of epithelium in dog.
This new implant has a sword-guard form on the superior fixture and three projections on the inferior sword-guard. The implant was made of Ti-II,the surface of which was processed by wire electric discharge. We installed two new implants and one IAT FIT II® into the mandibule of dog. The new implants were inserted in two ways:only malleting, or malleting after making a countersink.
The results showed that the bone was regenerated in the dead space and we also confirmed the prevention of downward growth of epithelium.
Therefore, we consider that wide tissue integration can be achieved by this stronger initial fixation due to the effect of prevention of downward growth of epithelium.
