I have a black triangle in my bottom front teeth after a very invasive dental scaling. Will hyaluronic acid filler help? (Photo)

I am 26 years of age. I went in for a regular hygiene routine clean but for some reason she used the ultrasocinic machine doing scaling which caused severe injury to my gums leaving me with gum loss in the bottom from teeth. My interdental papillae on both sides of one teeth have full gone? I believe she pushed the gums away. The crazy thing is I had no tartar built up there either. If you could kind tell me whether this will come back or would w hydraulic acid filler help in resorting it ?