There are soooo many vets that say no canned and that is fine but the research isn't very solid in this area.
There "could" be a connection between canned causing more build-up but kibble really doesn't clean teeth. If that were the case, hard food would clean our teeth. Whatever you feed, they have to be brushed. Then there are the positives to feeding canned like the moisture content and less processing.
Just as a side note, Ellie's vet has a special interest in dentistry and she supports me feeding homecooked (wet). Ellie's nutritionist, Dr. Remillard (she is Googleable
), also doesn't see a problem with it.