>>389462372
not sure how to explain it, but i mean like a 3d modeled plane where the mouth moves not by texture but by actually moving and sculpting the mouth. an example would be this https://youtu.be/thXbmuQiTZU?t=25 
i'm assuming it's made up of extruded planes that move around, but my question mostly is how can i set up expressions and visemes without either breaking each others' shape? (ie a big smile not bending wildly when speaking because the visemes were created on a resting mouth)