OPG dental x-ray
Hi Toovey,
I think you can go to any dentist (('m just going to contact mine to send the x rays they have taken.)
I don't think there is a deadline on doing this by a certain date like the ASIC and medicals etc. (not 100 per cent sure though)
Basically it's just a dental record so that they can keep on file to identify you if heaven forbid there is an accident and casualties.