Barbara,
Binx has a chronic mouth issue (deformity) called Gingival Hyperplasia. It means excess gum. Binx's case is VERY extreme. His teeth are COMPLETELY covered by large amounts of gum growth. It looks disgusting. People stop me all the time, "What is wrong with your dog's mouth?". (I mentally slap them). His teeth are in there, but, covered, in some parts, by 4 inches of gum. While he can eat, it is very difficult. My dental vet is out of suggestions, having never seen this. My dental vet is VERY respected, and knowledgeable, having been one of the first dental vets in the US. We have been to another dental vet, that travels world wide, and he isn't sure what to do. We have seen human periodontists, etc. So, this was a last ditch effort to find someone with the knowledge to help with Binx.