I struggled for years trying to give various dogs pills. I used to hide them in hamburger but the stuff gets yucky in the refrigerator. My vet gave me the secret. Velveta cheese, actually the generic version of it. I think the stuff must be made from chemicals. It never seems to go bad, the dogs love it, and it is easy to hide pills in.
i tried brushing the dogs teeth a couple of times. One of them never actually chewed his food, just swallowed it whole. So he had bad teeth. But brushing was not going to work. He tried to bite me. Most of his teeth fell out before he died. Now we use dentistick. I don't know if it works, but at least he doesn't bite me.
Dogs are all different. We had a huge dog. Cross between an irish setter and probably a Chesapeake retriever. That dog was so gentle that he could not be provoked to bite you, or even growl. I once pulled porcupine quills out of his nose, which must have hurt like hell, and he didn't try to bite me. His companion at the time, a redbone coonhound, who also got some quills had to be tied up to keep him from biting me when I pulled them.