Unfortunately I've been here, but our boy broke his lower canine.
If it is a fresh break (48-72 hours) they (a dental specialist) may be able to save the tooth with vital pulp therapy. If not, then a root canal may be an option depending on the degree of damage to the tooth. You don't want to remove a canine unless you have to.
We we're able to save the tooth initially with vital pulp therapy, which lasted a few years. Then last year we ended up finding out that the tooth had abscessed, and required a root canal (he showed no physical signs of pain, but his bloodwork was the indicator, with high ALT levels being the clue). We had the root canal done last year at this time and so far, so good, though I do have to have the tooth xrayed at the end if this year to make sure.
If you do have either procedure, make sure your pup does not chew on anything hard. As a rule, if it doesn't soften with saliva, don't give it as a chew toy.
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