Hi,

i've tried to work with morphs and expression morphs, magnets... lip top thickness seems to be the right morph to fix that but i'ts not enough and it also change the mouth too much. (by the way, is there a way to choose the area of influence of a morph, like the "magnet zone" for magnets ? never found out how to do that). Here is a pic with the mouth open so you can see how strange is that.

The texture changes in the inner mouth could be working, but it's an essential character in a animation project so it should be as clean as possible, if there is a way to fix the geometry it would be better.

Anyway, thanks for your incredibly fast answers !