The Mysterious Cartilaginous/Bony Ear Canal Junction

Research related to the occlusion effect (OE) suggests that the OE is minimized when contact of the ear insert (closed coupled in this case) is made with the bony ear canal1,2.  Measurements of the OE for various in-canal devices are numerous and essentially support this conclusion.  But, to what extent does the cartilaginous/bony ear canal…

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Ear Impression Terminology

Ear impression material has been developed to provide certain characteristics to enable it to provide as accurate a representation of the concha and/or ear canal as possible. This means that it should flow properly, provide an accurate image of what it comes in contact with, set up properly without distortion, remove without distortion or breakage,…

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