Dementhor Kiss for Voldemort

So I'm listening to the part, where lupin tells Harry that a kiss by a dementhor is far worse than death. So my question is now, what happens when a dementhor kisses voldemort.

When the body is attacked, the part of voldemorts soul survives, but the body is destroyed. Wormtail used this part of the soul to revive voldemort. When a dementhor kisses voldemort the part of his soul is destroyed. Could he be reborn by a different part of his soul or is this part mandatory to be reborn? What do you think? Could there be 2 voldemorts, using e.g. the same resurrection charm twice with different parts of his soul?