The first motif that I noticed in this part of II. A Game of Chess was that of wet/dry. The passage I've highlighted opens with "The hot water at ten. And if it rains, a closed car at four". I don't know exactly how bathing worked back then, but I'm sure people still preferred hot water, so Eliot is setting up people who are looking forward to hot water and hoping for no rain. People could wait for the rain and bathe themselves in it, instead of waiting for the hot water. I see a connection here between un/natural time, too. The people want to be clean for sure by ten; they won't wait for nature to pick a time to provide water. Nature provides people with what they need, but not always a way to form these things to suit themselves. I'm thinking toilet paper, loin cloths, fire, etc. People manipulate nature, including its timing, to create comfort and order.
The thing about the teeth could be connected to to zombies, as well as desire frustrated. Lil needs new teeth because our bodies only give us one set, which can (and often does) decay before the rest of our bodies. This decay -a dead or dying thing residing within a living person- reminds me of zombies. Somewhere in the corpse that is a zombie something lives. Not unlike how in the body of a living person something dead (fake teeth) can live. That she wants and needs new teeth because at age 31 a person is expected to still have them is an example of her desires being frustrated.