RESUMEN
The results of surgical treatment of 62 patients, suffering chronic purulent middle otitis, were analyzed. The structure of mastoid processus and attic constitutes a base for choice of middle ear surgical sanation. Sanation operation with preservation or reconstruction of external acoustical meatus posterior wall was finished with combined mastoidoplasty using autobone, spongioid bone bioimplant Tutoplast or bioceramic material "Sintekost". Achievement of a steady sanating effect have promoted in late postoperative period a trustworthy lowering of the perception threshold of the bone--conducted sounds as on vocal, and also on high frequencies, while of the air--conducted sounds--on vocal frequencies. This permits in perspective to perform a hearing--improving operations with good functional result.
Asunto(s)
Materiales Biocompatibles/química , Oído Medio/cirugía , Apófisis Mastoides/cirugía , Mastoiditis/cirugía , Otitis Media Supurativa/cirugía , Timpanoplastia/métodos , Durapatita/química , Oído Medio/patología , Femenino , Humanos , Masculino , Apófisis Mastoides/patología , Mastoiditis/patología , Otitis Media Supurativa/patología , Patrones de Reconocimiento Fisiológico/fisiología , Plásticos/químicaRESUMEN
Peculiarities of reparative processes of bioactive ceramic material "Syntekost", as well as reaction of structures of internal ear on these material, transplanted on osteal bulla in guinea pigs for experimental model of antromastoidotomy creation, were studied up. The signs of its resorbtion were mild, and these processes not always paralleled the osteal tissue evolvement. A newly formed osteal beams were observed up to 90-th day. In terms up to 12 mo there were preserved practically unchanged groups of granules of ceramic implanted material. New bone have evolved in a kind of foci in a distance from internal surface of osteal bulla. Inflammation or ototoxic impact of the material on structures of internal ear were not observed.