No. Wolverine's teeth have been shown many times and they are not silver. Seemingly, the process only covered his major bones, the outcrops like his teeth, and the bones of his inner ear would seemingly be excempt. Why this is the case, presumably they avoided coating his teeth in metal so he wouldn't stand out like Jaws in that one Bond Movie.

ok thank you

the bonding process wasn't simply slapping the adamantium on is bones and letting it harden they literally injected it into his bone marrow which means every bone is encased in it logically speaking if his bone is broken it should grow back with adamantium as his bone marrow is mixed with it. but teeth are not bone they are made up of multiple tissues that are called dentin which is actually harder than bone

Also it should be pointed out that Wolverine's healing factor is powerful enough that any damage to his teeth would be repaired rather quickly. I bet Wolverine doesn't have to brush his teeth because his healing factor probably kills the plaque and bacteria in his mouth. Although given the amount of beer he drinks and his love of cigars, perhaps it would be a good idea either way.

Except for this version: http://marvel.wikia.com/wiki/James_Howlett_(Earth-1031) Teeth and muscles laced with Adamantium (while Colossus has become Adamantium himself).