Pre-dep involves confirming dental stuff is good to go.
During deployment, if you're at a FOB you'll roll through sick call like normal and then go to dental if on a big enough place to have it, else guess what.. you get to ride to where dental can work it is if it's an issue that truly needs work.
Or, if you're in my case and have a wisdom tooth that's ok pre-deployment, then decides to maneuver it's way to chewing a hole sideways out of your cheek, you get lucky because you're doing some hearts-and-minds medcap missions.....
With dental coming in to fix hadj grills.
That gets a delayed departure bird due to primary (read, killing bad guys) mission requirements vs random transports of random assholes...
That then decide since they still have supplies, and are bored, "let's do dental sick call"
Annnd RP is jumping up and down ME ME ME ME UNFUCK MAH MOUF PLZTHX!!!1!
"Yep, fucked up. Does this hurt?"
Nope
*cranks some more on wisdom tooth* Still doesn't hurt?
Nope. If you're going to pull it, can you use my leatherman?
"uhh, you sure? It'll work, but..."
Fuck yeah, let's do this
*POINK*
Packing wad of some nasty tasting gauze later and some motrin with "hit up your medic if it starts hurting worse".... it never hurt in the first place post-removal. Good to go.