The herbst is very uncomfortable. It is cutting up my tongue and the inside of my cheeks. It's so hard to even swallow without my tongue scratching the expander. My mouth has been very sore, though that's improving a little. My teeth don't touch now, so chewing is very hard and I have to use my front teeth. The herbst only allows my mouth to move a little , so there is so much pressure when I chew. After like 10 minutes of chewing the smallest bite, I try to swallow it, and it all gets stuck in my expander, tongue crib, and in the side of me cheek. The two screws on the bottom cause two bumps on the outside of my mouth to show at my lower lip, especially when I smile, and it's extremely sore. My jaw hurts and I have a really bad lisp and difficulty speaking. I already had a hard time speaking with the expander and crib, but this makes it much worse.