Seema, there are two places to search here on OCF, one is here in the Forum for stuf in posts and the other is on the top of the Home Page for site articles, links and news.

http://www.oralcancerfoundation.org/

The likely (I am NOT a doctor) reason they are reluctant to pull the teeth is that there is danger of inducing necrosis in the irradiated bone -- Ask them about hyper-baric oxygen treatment (also known here as HBO) to strengthen the bone before extracting the teeth.

http://www.oralcancerfoundation.org/dental/hyperbaric.htm

Do a search from the Home Page on 'hbo' and you will get a lot of information.

I am also NOT a dentist, but it might be possible to do root canals and then grind the teeth down without injuring the bone -- I'm sure an actual dentist will chime in here regarding this!

Age 67 1/2
Ventral Tongue SCC T2N0M0G1 10/05
Anterior Tongue SCC T2N0M0G2 6/08
Base of Tongue SCC T2N0M0G2 12/08
Three partial glossectomy (10/05,11/05,6/08), PEG, 37 XRT 66.6 Gy 1/06
Neck dissection, trach, PEG & forearm free flap (6/08)
Total glossectomy, trach, PEG & thigh free flap (12/08)
On August 21, 2010 at 9:20 am, Pete went off to play with the ratties in the sky.