It’s late here and I had another window opened. I meant to close that window but accidentally closed Blender without saving the work I put on modeling the gums for the teeth. Luckily “File -> Recover -> Auto Save…” solved the problem. Make sure to always have “Auto Save Temporary Files” checked in the Preferences.
This is one of the reasons why I mute the CMD+Q (for quit) so that I don’t accidentally close Blender. Just this time I haven’t muted it since I had no plan to model anything in Blender yet. Right now just experimenting.
This head could be done much quicker with Sculpting, but I decided to go with Box. There’s something about pushing points around with the Mouse, the thrill you get… With Sculpting you use the tablet, with pushing points, you use the Mouse.