Surgical steel is something of a mystery metal; there are roughly 450 different mixes that qualify as surgical steel. Pretty much all of them carry some content of nickel. Nickel is a known sensitizer (people become more sensitive through contact).
The “snake eyes” piercing is an oral piercing that we at Master Pierce have taken a stance against. It's considered a fad piercing, and, as with most fad piercings, there are multiple risks involved with it.