I had vertical chin reduction around 10 years ago, then I always have the tight muscle feeling at the upper to middle area of my chin. I thought it may be the plate that is left in that area, but lately I finally understand it should be the soft tissues. My doctor had reminded me that tight muscle feeling may happened. Is that really because of soft tissues? Can this tight muscle feeling can be solved? Sometimes I even feel my lower teeth and surrounding bones are very tight as well. Thanks!