BUR #25315 has been approved by @nonamethanks.
create implication dot_mouth -> closed_mouth
Dot mouth is basically closed mouth but portrayed as a dot. I've looked through dot_mouth open_mouth solo -multiple_views and dot_mouth parted_lips solo -multiple_views and I only see mistags of dot nose (which I fixed), posts with other characters which have open mouths (post #6430117), and parted lips posts which don't look like dot mouths to me (post #4578685) and vice versa (post #4865986).
I see no reason why dot mouth and closed mouth should be mutually exclusive, nor do I think dot mouth should be paired with parted lips.