My new kitty is 3 years old. He came from the local shelter where he was being fed Purina Cat Chow (which he refuses). I have a feeling though that he has been fed moist food his whole life, because he gets really excited when I open cans. I know he needs dry food, but how can I get him to eat it? Also, on his medical records, it says the shelter vet found gingivitis. How do I treat this? Is it possible he is not eating because it is painful? I will be brushing his teeth regularly, etc. What else is good for teeth?