Orlicki R M, Stadnik Z
Protet Stomatol. 1990 Jan-Feb;40(1):28-31.
The authors present three cases of patients hard of hearing in whom narrowing of the external auditory meatus was found. The application of individually prepared insert with diameter greater than that of the meatus improved the hearing acuity without producing any side effects.
作者报告了3例外耳道狭窄的听力减退患者。应用直径大于外耳道的个体化定制的耳塞，提高了听力且未产生任何副作用。
