Earmold Basics
Things to consider when looking at earmolds
Discomfort
If you suspect that discomfort might be an issue,
there are a few things to consider before selecting an earpiece
material. First, check your skin texture. If the skin texture is firm,
you should consider using a soft earpiece material. If your skin is
soft or delicate, as can often happen with the elderly, use a firmer
earpiece material.
The helix area of an earpiece can sometimes cause problems. Many
earpiece styles do not require a helix to ensure a secure fit. You can
reduce potential problems by getting a 3/4 or 1/2 shell-style
earpiece. This is a particularly good choice for people who may
experience difficulty inserting the earpiece into the ear.
Loose Fit
If loose fit is a concern (i.e., your ear is very
soft), consider using a stiffer material for the earpiece, such as
acrylic. If you are using a soft material, a bulkier earpiece style
might be helpful.
Allergies
Use Mediflex or Frosted Flex silicone earpiece
material if allergies are a concern. However, earpieces made from
silicone can be abrasive to delicate skin, particularly in the
elderly. Select acrylic or vinyl earpiece materials that have been
boiled in saline solution as an alternative to Mediflex or Frosted
Flex. Polyethylene earpiece material is available for extreme allergy
situations.
Mandibular Action
Use the softest earpiece material possible for
fitting if you have to deal with severe mandibular action. Consider
having the canal tapering or specify a KC (hollow) style that will
allow the earpiece to flex with jaw movement.
Tubing
Tubing can cause problems if not chosen properly.
Keep in mind that tubing cannot be glued into silicone earpieces. When
the tubing is used as a handle to remove the earpiece, it can become
dislodged. This is especially a concern with children, the elderly, or
those with limited dexterity.
Feedback
If feedback has been a problem in the past talk to
us about using a bite-block or deep-impression technique. Consider
using a silicone material if the skin texture will allow. If acoustic
modifications will permit, always tube the earpiece through and vent
conservatively.
Ear Anatomy and Terminology
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When discussing critical information about
anatomical features and fittings for an earpiece or
impression, it helps if the hearing care professional and the
lab share common terminology. Below you will find definitions
for the most commonly-used terms describing the anatomical
features of the ear, as well as illustrations showing those
features highlighted on an earpiece. You may find these
illustrations and definitions useful when communicating with
Westone about the design of your patient's earpiece.
Ear Anatomy
The anatomical landmarks described here are
of primary importance to the hearing care professional.
Several of these hold special significance for the creation of
a proper fitting earpiece. This is shown for your
general information.
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