@FeiHongJr: of course i don't. the origin model is even 200 polys lower than yours (i do subdivision box modelling), but the shape just comes from the subdiv process.
for all who don't like the teeth, just cut em off

i needed it this way, because it will become part of a pass. this is the reason why the back head doesn't have any detail at all, it will be deep in a stone wall.
thx for the nice comments btw