Page "Deafness" Paragraph 76
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Wikipedia
Chronic ear infection ( a fairly common diagnosis ) could result in a defective ear drum or middle-ear ossicle damages, or both.
If the ear is dry and not infected, an air conduction aid could be tried ; if the ear is draining, a direct bone condition hearing aid is often the best solution.
If the conductive part of the hearing loss is more than 30 – 35 dB, an air conduction device could have problems overcoming this gap.
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