Hi! I'm not asking you to pay me for something that is really the only choice. As a dental practitioner for over 25 years who owns multiple horses, dogs and cats, there is no home dentistry for an animal with an infected tooth any more than there is for a human. I'd rather you call your Vet and use the monies to get the proper care for your cat. The infection above the tooth is an abscess and it is painful. Your call. It will not heal and will only get worse. The bacterial infection will also spread into the blood stream and can affect her heart. This is common knowledge be it human or animal. That's all I wanted to tell you.
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