I had ultherapy 3 days ago. I immediately noticed minor weakness of left lower lip depression usually when I yawn or emulating a "denture smile". The mentalis muscle was spared since I can still pout so I assume this is either partial injury to marginal mandibular branch of the facial nerve or injury to the cervical branch of facial nerve responsible for partial innervation of the depressor anguli oris muscle. Will this recover? Has anyone else experienced this issue with ultherapy