Teeth

When brushing the teeth care must be taken, a certain agility even is desired. When you have a small mouth like mine gotta make sure the lower teeth are diligently de-plaqued. Take five minutes.
Imagine the dental cement if it corroded & crumbled away, or the fillings, sparkling like black diamonds, came loose. No, the cement is tough. When people get immolated in a housefire they get identified by their fillings, them being the only things that survive.
All of the dentists are private and there is anyway a serious lack of them. Alternatives to fillings; rubber, transparent glass, ice.
I had a filling drop out of a back tooth, put there by an incompetent dentist. A nugget of metallic black. Eventually when the dentists get bad enough, or are just replaced by 3rd year students, your teeth will erode through vigorous brushing. Flesh and blood and sharp shards of enamel, a crumbling filling. Get new prosthetic cyberteeth top right. All hollow.
Soap opera actress/model in a magainze: "I have loads of dreams about my teeth falling out. I've been told that means I'm anxious".
Freud interpreted it as a sign of sexual frustration.
Connotations: anxiety, sickness. Moral and physical and structural decay. Angst in bathrooms, slavering.