Tom,

I was also under the impression that the risk doesn't lessen over time. I've had a couple of fairly standard procedures in the last two years with my oral surgeon and periodontist, and I know they both were very careful to assess the ORN risk before going ahead with them.

Vickie,

ORN is osteoradionecrosis (you can find quite a bit about it if you search this site). It is basically "bone death" that can occur post-radiation in areas such as the jaw if the bone is exposed during major dental procedures.

Cathy