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…

Read More

Ear Impression Otoblock Myth – Part 2

Myth.  “The ear impression otoblock stops the ear impression material from going too far into the ear canal, and protects the eardrum by not allowing it to come into contact with the eardrum.” This post continues as background to show that the above statement is a myth, and a more realistic approach should be taken…

Read More