From Andrea Bianchi,s 1981 film ’Le Notti Del Terrore’ (The Night Of Terror) , AKA : Burial Ground is now known for its use of ,tho not first , to highlight FAST moving teeth ?...no problem ,grab a frickin scythe ! I use files like this as most artists do -- to study for my sculpts/ many ,i grab stills from obscure films ,and figure out a sculpting point. One of my current side projects are the 2 stars of ’ Frankenstein meets the Space Monster’ ..(one of my top faves from childhood).Check out the movie if you,ve not seen it.