Central odontogenic fibroma: review of literature and report of cases.

The features of two cases of central odontogenic fibroma are presented and the literature is reviewed. Controversial issues surrounding this neoplasm are discussed. The cases presented here include the oldest reported patient with this neoplasm and the first instance of its occurrence at a maxillary site. Treatment and follow-up information emphasize the benign nature and slow growth of these lesions.

Load-bearing capacity of functioning alumina dental endosseous implants.

The average load that did not produce measurable plastic deformation (5 mum) of the bone that supported six Al2O3 implants in this study was 57.5 kg. Histological slides from specimens that were loaded to the point that measurable plastic deformation (5 mum) was produced showed lines along which stain was concentrated. These lines emanated from the point of maximum stress and extended in the direction of the applied load. They were concluded to indicate regions of microplastic deformation. No untoward histological response to the solid Al2O3 implants was observed and no evidence of apical migration of epithelial tissue was noted.