How safe and effective is hydroset bone filler endoscopic placement into my skull that has an indentation?

I have a well bordered skull indentation that is 2 inches long. 1/2 inches wide and 1/8 inch deep that I would like filled with endoscopically with hydroset to fil the dent and I want to know if there are infection and long term risks from the procedure? Also Is artificial hydroset bone filler safe and effective to fill in forehead dent near frontal sinus? So what are the risks?

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