Q. Hello Dr, I need to photogrpah some teeth / mouth and it would be very useful to have a mouth clamp to hold the mouth open while doing so. I have been running unsuccessful internet searches for “Mouth Clamp”s for a couple of hours now and would be very grateful if you could tell me the correct name of such items. I remember using a metal adjustable version at a dentists a few years ago and have seen plastic versions. Do you think you could point me in the right direction – I need the mouth as wide as possible. Thanks a bunch,