I can't find the study anywhere, but I remember reading an article showing that mice who never digested carbohydrates still got cavities if they were injected with glucose solution, causing a glycemic response and leading to type 2 diabetes.

https://www.theguardian.com/science/2017/jan/09/decline-of-the-dentists-drill-drug-helps-rotten-teeth-regenerate-trial-shows

Dental caries vaccine: are we there yet?

Biomaterial could keep tooth alive after root canal

Physiological recalcification of carious dentin.