On first blush, this is an interesting premise. And it would seem to make sense once there is no need for human attendants, nor any potential accommodation for them.
That's exactly what I was thinking, you can lay face down on a massage bed for a pretty long time, so they should just be able to put the robot in your mouth through the face hole lol
I imagine, particularly with V1, there's probably going to be human attendants for a good portion of the procedure. You'd want them for administering the numbing agent and positioning the machine for the procedure.