system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5- Do animals have ways of keeping their teeth clean? Are they affected by the same dental problems that can occur in humans?
gpt
Animals have a variety of ways of maintaining oral health.

Some animals, like sharks, continuously grow new teeth and shed old ones. So if they chip or lose a tooth they just have to wait a few weeks for new ones to come in, then it's back to business as usual.

A lot of rodents and ungulates have a different solution of having teeth continuing to grow indefinitely. This has some drawbacks, primarily that if they don't wear down their teeth, the teeth can become overgrown and and even grow into the animal and hurt it. So maintenance is key. 

Animals who don't have either of those benefits can do a variety of things, some chew on leaves, some form symbiotic relationships with smaller animals that pick bits of food out from between their teeth. But ultimately, without modern dental care, these animals will one day lose their teeth and be unable to feed.