Hi Merrie,
Thanks for your email yesterday. Will respond later today.
Sorry to hear that you are having so much trouble with your teeth. Is there no emergency service when he is away. Can you go to the dental hospital? Presume that it is the one near central railway station.
Did a goole search with the following
emergency dental sydney.
Looks like a few options including this one http://www.emergencydental.com.au/ which even has a section on oral-cancer http://www.emergencydental.com.au/oral-cancer.htm
Murphies Law again happening just before a long weekend.
Hope you are able to find some help.
Gabriele