Hmmm. Joshgamble, I think you've got it backwards. Frankenprey and whole prey raw diets are beneficial to dental health, commercial and ground diets are not.
Here's a Colyer Institute article detailing why: Influence of diet consistency on periodontal disease in captive carnivores.
The points we're most interested in are:
Wet foods: "Soft diets tend to produce more bacterial plaque than do firm diets."
Kibble: "Excessively course, granular diets can produce periodontal disease through the action of abrasive overuse of, and by direct traumatic injury to the supporting tissues of the oral cavity."
For dental health, the only diet that truly supports a healthy carnivorous mouth is one that includes ripping, tearing and slicing through meat, skin, tendons and bones... in other words, a non-ground raw diet.
"Foods of firm consistency will increase the number, distribution, and tone of the capillaries in the gingival tissue; which improves the metabolism and vitality of all of the supporting and surrounding structures of the oral cavity."
"The degree of keratinization of the stratified squamous epithelium in the mouth, which affords protection against trauma and other injurious agents, is affected by the frictional qualities of the diet."
"Chewing, by its mechanical action produces a compression and expansion of the periodontal ligament space around the teeth which, in turn, promotes formation of a dense fibrous suspensory structure by increasing both circulation and fibroblastic activity."
"The width of the periodontal ligament, a measure of its health, is directly related to the intensity of the mastication function."
And so on.
My older cats are only three years old. Because I started them off on dry, then switched to wet and only went raw a year ago, all three of them are in need of a dental cleaning.
Thankfully, my younger cats went from a feral's menu of mice and other wild prey almost directly to a frankenprey raw diet, and I do not anticipate the same issues for them.