Carbon Particles Mastoid And External Auditory Canal Reconstruction

To prevent infection of an open mastoid cavity after mastoidectomy and improve hearing, which have discussed the difficult question in clinic, it have been substantiated its avirulence and biology containing by the experimentation of ten pure Zelanian rabbit. It is perfect manpower stuff. From August of 1987 toJanuary of 1999, we had adopt this method on 72 cases (78ears) byfiLling mastoid cavity with carbon pellet ,including é°ˆmastoidectomy and 22 tympanoplasty. The average duration of dry ear with a dry war ratebeing 98 .6%.Nophe nomenon of rejection and falling out alleared within 0. 6?7years follow?up. Carbon pellet has advantages of chemical stability, nontoxicity ,goodhistocompatability, antifatigue characteristicinbody fluid, and antiorrosive effect against acid,alkli and salt.