When should an SCMS blade be discarded?

In a recent accident, one tooth of the aluminium cutting blade on my
SCMS got bent slightly sideways. I hammered it gently back into alignment
but I was surprised how easily the bent tooth went back into position.
So now I'm wondering whether this means there's a lurking stress fracture
in there that's waiting to injure me if I try and use the blade again.

Should I risk using the blade again, or just toss it and buy a new one?

If it's usable, then there's another problem: while...

Source: http://www.woodworkforums.com/f67/when-should-scms-blade-discarded-131433/

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