M.C.T. earpieces are great for high frequency losses
and other losses not greater than 60db at 1kHz.
- All but
eliminates the "voice in the barrel" (occlusion effect) problem.
Requires less venting, thereby reducing the risk of acoustic feedback.
Reduces contact with the walls of the ear canal for increased comfort.
If canal retention and/or patient dexterity are not a problem most M.C.T.'s
will be made as a canal only, producing a more cosmetically appealing earpiece.
The canal length in M.C.T. impressions must be 15mm to 20mm.