Minor nerve or muscle damage from a past chin implant? Where do I go from here? (Photos)

I need help understanding what my options are, what types of doctors to see, procedures to consider, prognosis, etc for a poorly done chin implant inserted submentally in 12/2014. No numbness, but permanent tightness & lack of movement in my mentalis muscle & right depressor labii inferioris. Had revision in 4/2016 w/replacement implant, scar tissue removal but no improvement. Please see video and pics from 1st & 2nd surgery. 

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