Jeanne,
Without knowing your dog's full history, I'm hesitant to recommend a pain medication. You can call your vet and ask for a dose for an over-the-counter pain medication. If that is not indicated in your situation, ask about Tramadol - its a new drug similar to an opiod that is gentle on old animals and should not cause stomach upset. Its less expensive than opiods, but they may have to call in a rx to a human pharmacy.
There are soothing gels (CET)to help make gums feel better. You could also try ice in his water and soaking food in tepid water to soften it.
Sometimes it is worth the extra money (and can save in the long run) to see a boarded vet dentist in your area. There may be a reason this keeps happening. Best of luck, Dr. Meg
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No sound, complete veterinary advice can be offered without examination of the animal. Each case is unique. Please see your local veterinarian. Dr. Meg
