Hi Terry-
Dogs aren’t born with allergies, they develop them over time through overexposure to the same food. Even though you were feeding an excellent quality dehydrated raw diet, you didnt vary the proteins she got, hence the sudden onset of the allergy.
As for the myth about the wet food making the teeth worse, its just that, a myth. Every dog needs their teeth brushed regularly just like a human in order to avoid dental problems. Raw meaty bones are also probably the best thing to clean the teeth like Rhonda suggested. And if you were rehydrating the raw as you should its no different than the wet food getting on her teeth.
I would suggest keeping her on the dehyrated raw diet but changing the protein source and even brand, obviously now avoiding whatever protein she is allergic to.
