I once did a course on major aircraft accident casualty management, run by that firm that is always called in as morticians and runs the identification process, in UK at least. I forget the name; something like "Kenton"?
We learned that after a high speed impact into the ground, most victims' jaws and teeth are found in their stomachs, usually somewhere in the middle of the compressed mass of tissue. Many colourful slides were shown to illustrate the point. This was also my observation when helping clear up after a Caravelle CFIT into a mountain east of Dubai in the early 70's.
Not a lot of people know that, so I thought I would share it as a contribution to the discussion about the role of the brace position in assisting with dental ID.