Gonna have some plot spoilers.
A long time ago I've read this… either novel or a short story that was essentially mostly about the results of a zombie apocalypse. The outbreak itself was briefly described – people got sick, people died, people came back – but the twist was that a cure was found reasonably quickly and everyone was healed, but then society had to deal with the aftermath of this situation.
So the people who were never sick and saw their neighbours commit atrocities and kill other people had to learn to live with them again, because apparently they were mindless husks when sick and didn't even know what they were doing. I recall specifically that the teeth were the defining characteristic – all the healed zombies had messed-up teeth and wouldn't smile, or would smile only with their lips, while the healthy people would show their teeth with something approaching pride and this became the symbol of this division between the two groups.
Tried to google for it but to no avail, hoping someone can point me in the right direction because it was an excellent story!
by Faeluchu