A lady I use to work with had one, as well as a britney and a rotti. The jrt wasn't allowed into the house, way to hyper. Her step son adopted it, and it did calm down but only because there were 3 guy there on and off all day to work with her, a...
I make sure my dogs get bones and greenies, I also make sure they have those rope toys for floss. There teeth show no sings of tartar and the vet always gives them good reports. So far pro cleaning has not been needed.
Sounds like KC to me. Several years ago my sister and I adopted a lab mix for the spca, that had the same things going on. The vet told us that shealters are breeding grounds for this as the conditions (while better than the streets was still not ...