Is there hope for those kissed by Dementors?

[Doreen Rich]

No: HPFGUIDX 19889

I know that someone, at sometime, said that there was no hope for 
those who had been kissed by the Dementors. I have been wondering, 
though, since Voldemort had old magic that brought himself back from 
his lowly state, if he can do the same for the demented?

He tells of honoring the Lestranges beyond their wildest dreams ... 
well, what good would "honoring them" do, if they were still in a 
demented state and could not appreciate it?

Doreen, the Corn Patch Witch from Iowa