抄録
Obliteration of temporal dorsal bullae using hydroxyapatite granules (HG) was performed to investigate the biocompatibility of HG in the mastoid cavity. The specimens, prepared by undecalcification hard tissue technique, were observed one year after HG implantation.
The temporal dorsal bullae were observed to be obliterated completely by HG and bone. The bone and HG were interdigitating tightly without connective tissue. Physiological new bone formation, possessing features such as osteon-like structures and Haversian canals, could be recognized.
It is concluded that HG is a useful material for mastoid obliteration with tympanoplasty.
