Typically the crown does not bend becasue there is not enough fork stantion engagement there to effect a bend. So it's the triple tree you need to worry about.
The triple tree either looks like a piece of spaghetti (big crash; non-fixable), or it's only out a couple of degrees (little crash; repairable). Additionally, 95% of the time the forks get pushed to one side. That is to say, it's hardly ever a straight-on hit, owing to the fact that most riders try to react in some way to the car/ guard rail/ animal blocking their path. Typically, these type crashes result in damage to only one side of the tree most of the time.
The best way to straighten a triple tree in this common condition is to assemble the tree and crown onto the bike and install 2 brand-new naked stantion tubes (with snug top caps and pinch bolts). By simple observation of the parallelism you can tell which tube has been pushed back. [Based of course on the assumption that a passing motorist did not yank the bike's front end forward.
All you have to do then is pull the lagging stantion back to it's original forward position. This is done by turning the fork assembly in the opposite direction of the wreck, placing the foot firmly upon the forward motor mount, and making a judicious application of physical strength at the bottom of the affected stantion to pull it back into parallel with its neighbor.
Works every time. Takes about 4 or 5 tugs and 15 minutes.
Your back will only hurt for a week. :bigt