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In-the-ear
(ITE) style hearing aids are fit within the bowl of the ear. As a result,
they take advantage of the ear's natural resonance. ITEs may be better suited
for certain types of high-frequency hearing loss as long as the loss is not too
severe.
ITEs have some disadvantages, however. Because the aid is placed in the ear, it
is more susceptible to damage caused by ear wax. In fact, 80% of all hearing aid
breakdowns are attributable to ear wax.
It is also sometimes difficult to increase the volume to high enough levels without
getting irritating feedback and squealing. As a result, ITE aids may not be
appropriate for patients with more severe hearing losses.
Behind-the-ear
The electronic components of a behind-the-ear (BTE) hearing aid are housed in
a case that rests behind the wearer's ear. BTEs tend to last longer because ear wax
cannot enter the electronics.
While the ITE hearing aid may seem easier to conceal, the BTE hearing aid may
be less conspicuous because the electronics can be hidden behind the ear.
The BTE is much less susceptible to feedback or squealing, so the aid can be
turned much louder than the ITE.
Finally, some BTE aids may be more sophisticated than ITE aids because more
electronic components can be used to process amplified sound.
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