Gen'yumaru.
orochimaru's arms get healed but then he ends up dying
He wanted Tsunade to fix his arms. However, she betrayed him, so his arms never got fixed. Instead he took over a new body. That's how his arms are alright now. This happens in the end of naruto, a few episodes before the time skip to shippuden. Orochimaru intended to take over Sasuke's body, but Sasuke arrived too late. He takes over another body instead.
The body will heal around metal plates because the plates cure the body
Yes.
Your body creates scabs to protect the inside of the wound/sore from infection so it has time to heal
no, the arms mend faster
Yes, all parts of wolverine's body can heal
The heart does not have the capacity to heal itself, which is why heart attacks are often fatal.
no they do not
Wait for the body to heal itself.
Teeth do not heal like all other parts in your body because teeth do not have cells that help than other parts in the body so the other cells in the body help heal because they keep build up. That what i think.
Nothing but what you have been told to use by your professional body piercer. There is no secret heal fast cure, it will heal as quickly as every other injury to your body and old as quick as you allow it to, so don't mess with it and it will heal.