The old fashioned way was to arrange a thin piece of plastic on a clamp, take
some dental impression compound (Kerr brand, if I recall correctly, a kind of
wax), soften it in warm water, mold it around the piece of plastic, and have
the subject bite down on it. When it cools and hardens, the head is held
mighty steady when the subject bites on it. (Of course, you need a new one
for each subject.)
Don
Donald McBurney
University of Pittsburgh
Melvyn King wrote:
> Hi all,
>
> For a collegue of mine:
>
> We are looking for a chin rest such as one would use use to hold the
> head in a steady position for a visual task or some such? Do you know of
> a source for a bite bar for the same purpose?
>
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