He said that the other tooth thing (which I googled and found it's Resorptive lesions) has also been seen in dogs and they have no idea what causes it.
Here's the info I found online
The bad news is, this is not going to be covered by our insurance. Which means I have to raise $500-600 (eeek)Quote:
Resorptive lesions, formerly knows as FORLs (Feline Odontoclastic Resorptive Lesions), are a type of dental disease found primarily in cats, although they have been found in other animals as well, including dogs. The causes of resorptive lesions are still not completely understood. Regardless, what happens is the tooth literally starts to dissolve from a specific point anywhere on the tooth, and the root of the tooth starts to resorb into bone. Eventually the upper tooth weakens so much from the dissolving area that it breaks off and the root is completely resorbed into bone. This also happens over a several year process, and in the meantime, as the tooth is dissolving, it is very painful as nerve roots are being exposed. The only treatment for this is to remove the tooth as soon as the resorptive lesion is found.