Yeah, give it a day or two to heal up if your gums hurt. If your gums don't hurt, then you can smoke right away.

Granny's right, avoid dry mouth like the plague (in general). Biotene is great, but also xylitol gum (you can get it at a natural foods store) like Xylichew is beneficial. Tom's of Maine makes a xylitol toothpaste, too.

And drink water!