Here is one from Del Monte.
Q:Is it safe to eat food from a dented or swollen can?A:Dents along the side panel of the can (away from the seam) will not affect the contents of the can. Never purchase or consume a product when there are dents on the side seam or the end seams. If cans are swollen or leaking, we recommend that they be destroyed. Should you have any doubts about the safety of any food, you should not consume it.
I have always and will continue to bypass dented cans.
To back up Kevin....here is an article about chemical reaction.
and a helpful pdf file
---AND for grins ---
Britany's place cited...