Cryotherapy (cervical freezing)

Thought I'd bring up the topic since I rarely hear anything about it. I had it done in 2007 due to an abnormal biopsy. I asked my Dr today after seeing a pregnancy blog on it stating that it can cause complications with dilation.  He confirmed that it is indeed possible and if that occurs they would have to break up the scar tissue during delivery. Any one have complications due to Cryotherapy?