i sadly noticed that it´s not possible to pick up the "chattering teeth(?)" trapped near the fireplace (Bernard/Present). They are not selectable as an object.
Same thing happened to me on the PC version, I just can't get those teeth. Any resolution? I'm gonna try saving my game and playing without scumm, and resaving. If that's even possible.
The problem is specific to the disk version of DOTT and was fixed in ScummVM, after the release of 0.8.2. So try using a recent snapshot of ScummVM if possible.
I started a new game and the issue went away. I had to re-do a lot, but I'm past it now. Fortunately, you can get the teeth really early, so if you re-started and still couldn't get the teeth you could re-start again easily.