Sugar absolutely leads to tooth decay since bacteria feeds all the more easily on it, which produces acid that weakens teeth.
Not if you have proper dental hygiene, you ding dong. You're supposed to brush your teach, ideally, after every meal or, at least, twice a day.
I could easily go days without brushing eating meat, but notice plaque accuмulation just hours or minutes after having carbs or sweets.
You're delusional and disgusting for not brushing your teeth for days after eating dead flesh.