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Things to consider before getting your custom IEM impressions done. The perfect fit. - Page 4

post #46 of 182
Quote:
Originally Posted by pepsi666 View Post

A grand thread from those who are afraid of audiologists and hence want to read 'ahead'. biggrin.gif The truth is that all of this crucial basic info should be told to you by your specialist. If they didn't advice your properly, choose another one.

 

"The truth is that all of this crucial basic info should be told to you by your specialist. If they didn't advice your properly, choose another one."

 

Oh, great, so newcomers to CIEMs should wait until told by their CIEM vendor that their impressions are substandard and then "choose another" audiologist? Wonderful.

 

Your idealism is admirable, but your presumptuousness is, dare I say it, 'questionable'.

 

This thread was not, as you condescendingly put it, contributed to by "those who are afraid of audiologists and hence want to read 'ahead' ". It was contributed to by head-fiers who have either been stung by paying for impressions that turned out to be sub-standard or inappropriate for CIEM production (even though the impressions might, perhaps, have been appropriate for hearing-aid production), or who wish to forewarn other newcomers to CIEMs to be very specific in how they approach the process. The requirements for impressions for the purposes of manufacturing CIEMs differ from those intended for hearing-aid manufacturing. There is, of course, a good deal of overlap, but outside of that overlap, are important factors which many audiologists are blissfully unware of.

 

Since your remarks appear to imply that you have experience in this area, I am left to wonder whether you were simply fortunate in finding an audiologist already well-versed in the specific requirements for CIEM impression-taking, have abundant time and funds to waste on 'choosing another one' (audiologist), or are, perhaps, simply being obtuse for the sake of your own amusement, or if you actually have no experience whatsoever. I will give you the benefit of the doubt and assume that you, perhaps, fall into one of the first 2 categories, or similar. You were ambiguous, in your use of the term 'specialist', as to whether you meant the audiologist or the CIEM vendor. In either case, I can personally attest that when I presented the printed instructions from UM (which are broadly similar to those provided by JH Audio and many other CIEM vendors), my first audiologist just laughed and said he'd been taking impressions for hearing-aid users for 30 years and that the UM instructions were pedantic. The result? Ear impressions lacking in definition in the region of the crus of helix, and wasted time and money having to have them redone.

 

Not all CIEM newcomers were taught, as part of their school education, the specific requirements for taking ear impressions for the purposes of CIEM manufacture. So how are they to know if the audiologist they approach really knows the specifics?

Not all audiologists were taught, during their professional training, the differences in requirements for taking ear impressions for hearing aids vs. those for CIEMs, but many will nonetheless casually bluff their way forward when asked by potential customers if they know how to take impressions for CIEMs. This can result in a potentially expensive and time-wasting experience for the CIEM newcomer, and none of us enjoys that kind of scenario. It is not easy for first-timers to be able to have the necessary understanding, certainty, and fortitude to override the arrogance of a time-served audiologist who may know less about CIEM specifics than they presume to know.

post #47 of 182

Tru' dat.

 

Nothing wrong with knowing how your car works even if you're not a mechanic.

post #48 of 182

What a brilliant thread! Might Blu-tack up my W4`s this weekend for fun. Love it.

 

EDIT: Just tried a quick attempt, no seal. Might be easier with a wax earplug, will try that tomorrow. 


Edited by MusicalChillies - 4/26/13 at 11:14am
post #49 of 182
Absolutely agree with your post above Mython. I read every post in this thread (and others) long before I had my impressions done, and I've no doubt doing so/the info you & others have provided throughout resulted in my impressions being done 'properly'.

My audiologist had done a few impressions for CIEM's before (she'd done one a week prior), but was very accepting of my instructions (and 1964Ears' printed instructions I'd bought with me) on how I wanted them done & did them exactly as asked. Hopefully this results in good fit first time round (tho I have budgeted for one refit).

Thanks for a great thread ;-)
post #50 of 182

i plan on getting customs soon.. thanks so much for all the tips :)

post #51 of 182

Here's another.  Cosmic Ears have brought in a prefit service for those not sure on whether customs would suit them or not.  Full details on the website.  So if you've been tempted by customs but never quite sure whether they'd be for you here's a chance to try them out.

post #52 of 182

Great thread - like so many before me, helped answer a ton of questions and clarify some more. The thing is, I'm with Mython on the "additional" questions he poses. Anyone have thoughts?

 

--Dan

post #53 of 182
Quote:
Originally Posted by bfettd View Post
 

Great thread - like so many before me, helped answer a ton of questions and clarify some more. The thing is, I'm with Mython on the "additional" questions he poses. Anyone have thoughts?

 

--Dan

 

I agree, there is a lot of good info in here.  I am working on a guide that will hopefully answer more questions and make it clearer.  One way to check if an audiologist will do a good job is to talk to them before they make your impressions.  Ask them questions and shop around, when possible.  My first set of impressions wasn't deep enough, which was a recommendation from here, and I also had a set taken from a UE recommended audiologist that was borderline (that person isn't on the list anymore).

 

Here is a partial list of the questions used for screening audiologists :

- Have you made impressions for custom in-ear monitors for musicians? What technique do you typically recommend (this is more of a test and you are hoping they will make them per the manufacturer’s recommendations)?

- Are there any reasons you would not take an impression during my appointment?

- Do you have bit blocks, and if so, what size?

- Will you make new impressions free of charge if the manufacturer doesn't accept the first set?

 

When I get impressions done, I make sure the ear dams are inserted as deeply as is comfortable.  If that is done, you greatly increase your chances of getting a good set of impressions.  I have asked an audiologist to keep going deeper.

post #54 of 182

I went to the audiologist yesterday and finally got my impressions. I felt like I twitched my ears a few times when I was trying to clean up my drooling.. is that okay or very bad? Also, my audiologist told me to put my bite block in sideways as in on one side only. I put it on my right side, not sure if that'll make a big difference too.

 

Here are my impressions. There are a few "canyons" here and there. Is this a normal impression or should I get new ones?

 

 

 

 

It goes a little more than the second bend, but the tip isn't a plateau if that matters.


Edited by Bananaheadlin - 2/25/14 at 8:27am
post #55 of 182

Helpful...Thanks for sharing.

post #56 of 182
Quote:
Originally Posted by Bananaheadlin View Post
 

I went to the audiologist yesterday and finally got my impressions. I felt like I twitched my ears a few times when I was trying to clean up my drooling.. is that okay or very bad? Also, my audiologist told me to put my bite block in sideways as in on one side only. I put it on my right side, not sure if that'll make a big difference too.

 

Here are my impressions. There are a few "canyons" here and there. Is this a normal impression or should I get new ones?

 

 

 

 

It goes a little more than the second bend, but the tip isn't a plateau if that matters.

 

 

 

I hadn't seen this post (sorry), but I would say that those impressions are sub-standard.

 

Also, I cannot understand the stupidity of some audiologists insisting that bite blocks be put in one side of the mouth - why on earth they would wish to introduce asymmetrical muscle tension in the jaw whilst the silicone cures is beyond me! :confused_face:

post #57 of 182

People need to understand that everyone's ear canals behave differently (that is, individually).

This is, in essence, the reason that there is no single "correct" method of taking ear impressions.

post #58 of 182

An unusual experience . . .

 

I had impressions done years ago for my UE CIEMs, so thought it would be a piece of cake again.  So I went in a couple days ago, and they were not able to get the foam plug (first step of the procedure) far enough down in one ear without an excessive amount of pain.  My take is that this ear was not able to release the pressure correctly.  (I scuba dive so have a feel for equalization).    

 

I wonder if a decongestant might help.  I know it's a trick divers use pretty often.  

 

Interested to know if anyone else has had this experience.

post #59 of 182

those canyons are made by the strings that used to pull out the impressions

but so large as in your pics is quite stupid indeed.

you should ask whoever did this to redo your impressions.

 

here are mine for your reference

 

 

 

 

 

some bad example

 

crack like this is likely created by violent pull,

something like this never makes good iem.

 

insist you want to redo the impression or lie down the floor kicking until they do.

post #60 of 182

i should have read this thread a lot earlier. just got my impressions done. i used a bite block - when i asked the audiologist on where to bite, she said either way would do. so what i did is i bit on the flat sides of the bite block. after the cement cured, she found that the right impression was not good - so we had to create another impression with just my right ear. i hope i get a good seal when my ciem arrives :cool:

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