Dreve Otoform Xpand from PC Werth
you can order Xpand at pcwerthstore

What’s in an impression?

Well if you are involved in hearing aid fitting, hearing protection or any of the associated fields, quite a lot!!!

While most impression material can be used for multiple types of ear impression it is true that there is such a wide choice of materials available for a reason. The reason is that the accuracy of specific types of ear impression can be improved upon by using certain types of material.

One of the really good advantages of working at PCWerth is that I have easy access to the full range of impression materials from Dreve, the worlds premier impression material manufacturer, which gives me the somewhat unique opportunity to try them all out for the specific reasons they were developed.

I recently had a chance to try out the new Xpand material while taking some impressions for some musicians filtered protection where a previous set of plugs had to be re made as the client had a particularly pliable ear canal. The reason I decided to give the Xpand a go, apart from the fact that is was new in, was that the newsletter from Dreve claimed that it is formulated for exactly that purpose. In short, they were right, the material is designed to be used with a standard impressioning gun but to be a lot easier to squeeze through than the standard AK material while still retaining the pressure required to keep the ear canal at the desired size for an accurate impression.

This got me thinking about the benefits of using the correct material for the correct impression.

When to use the different types of Otoform

In short the Dreve AK is the best all rounder, however due to it consistency and final shore value it is not necessarily the best option for use with either guns, pediatric or clients who are looking to use any of the really deep fitting IIC type custom devices.

For this type of impression, I use the Asoft X foam type material, as the soft final shore value and it’s light texture makes it ideal for capturing every detail of the longer canal whilst being easier to remove due to the flexibility of the impression once cured.

The Xpand material is ideal when impressions are needed but there are some areas of the ear canal which are suffering from tissue weakness.

Further information on impression material and all other products can be found either on our website, www.pcwerth.co.uk , or on our Webstore at www.pcwerthstore.co.uk .

Obviously I am a fan of the Dreve material as this is the one I am most familiar with, but don’t just take my word for it, I have managed to secure a few cartridges of the new Xpand from Dreve and am happy to send a sample to customers upon request either via this article or direct to me at trainer@pcwerth.co.uk .

I have also created a link to a document from Dreve which clearly explains the specified uses for each of the materials available at https://www.dropbox.com/s/y5cbgwkg0bggy2g/Otoform%20Formulations.pdf

If you have any questions, you can contact me on this blog, via my email above or through the PC Werth switchboard.


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