This is a unique concept that actually has some decent moments of worldbuilding that showcase the world that these teeth characters inhabit. There's some clever visual gags and design ideas, but the story suffers from Chip's identity journey not being as emotionally resonant as it needs to be. The side stories also suffer from either being very cliched (the mob storyline) or too exposition heavy, this being everything with Dr. Fere. I'd personally recommend cutting the Big Mo side of things, focusing more on Chip's journey, and developing Dr. Fere's side of things so that they're not as on-the-nose.

There's an interesting story here, but the execution feels formulaic and underdeveloped. Definitely explore more of the character relationships and add some new details to Satan and Robert's deal so as to not make it so rushed. If anything, just make it longer than 11 pages. There's certainly plenty of ideas here that can be fleshed out even more.