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目的 :探讨乳突腔同种异体牙充填并上鼓室外侧壁重建的开放式鼓室成形术的手术疗效。方法 :对5 2例 (5 2耳 )胆脂瘤型及骨疡型中耳炎患者 ,根治病灶后 ,以同种异体牙乳突腔充填并上鼓室外侧壁重建 ,同期行开放式鼓室成形术。结果 :术后 4 8耳外耳道形态接近正常生理状态 ;4 6耳鼓膜移植物生长良好 ;干耳率 92 .3% ,干耳时间平均 (17.6± 4 .2 )d。术后气导听力提高在 15dBHL以上者为 4 1耳 ,气骨导差小于 2 0dBHL者为 31耳。结论 :乳突腔同种异体牙充填并上鼓室外侧壁重建的开放式鼓室成形术 ,可较好地恢复外耳道和中耳的解剖结构和生理功能 ,听力提高远期效果显著
Objective: To investigate the effect of open tympanoplasty on mastoid cavity allograft filling and reconstruction of the lateral wall of the tympanic cavity. Methods: Fifty-two patients (51 ears) with cholesteatoma and type I otitis media were treated with open reduction tympanoplasty after filling the allograft and the lateral wall of the tympanic cavity. Results: The shape of the external auditory meatus of 48 ears was close to the normal physiological state after operation. The growth of 46 ear eardrums was good. The dry ear rate was 92.3% and the average dry ear time was 17.6 ± 4.2 days. Postoperative air conduction hearing increased more than 15dBHL were 41 ears, airways were less than 20dBHL were 31 ears. CONCLUSION: Open tympanoplasty, which is filled with allograft teeth of the mastoid cavity and reconstructed on the lateral wall of the drum, can well restore the anatomic structure and physiological functions of the external auditory meatus and the middle ear. The long-term effect of hearing enhancement is significant