Old wood can be restored to a degree. dents can be steamed out to a certain extend. warps can be straitened out. All that requires is steam and a jig to hold the wood in place as it drys out.
Cracks are more problematic. If the old glue job is bad you need to get that old glue out and start over. Cracks that affect the integrity of the stock are going to need "mechanical" reinforcement.
Dents. You might want to move the iron around more than this guy does.
https://www.youtube.com/watch?v=F_Z_h76Sd1w
Straightening bent wood is similar to getting out dents, but with more steam and water.
The hard part is setting up clamps or a jig to bend your stock into the right shape. the steam is made in a steam box or even a large plastic bag, depending on the size of the wood.
Good luck.