hi Margo,
i had transient fever spikes. As long as they didn't last too long, the docs weren't really concerned. However there is some temp at which they get really concerned real fast. You need to be sure that your doc has informed you about that.
i was able to brush my teeth and rinse my mouth during the entire chemo/rad proceedure... but i quit eating during the first week and use my peg.
best wishes to your dad,
cu,
larryb