I'm on a diet and it works.
It's called: I'm-tired-of-spending-a-grand-every-time-I-go-to-the-dentist Diet
I started it at the beginning of this week and I've lost about 5lbs.
In terms of food regulation, generally avoid the sticky, sweet, and sour things.
The focus of the diet is my ability to brush my teeth 30 minutes to an hour after I eat. I'll use a Waterpik in the morning after breakfast. Floss between my teeth enough to dislodge food, then brush after dinner. At night, I floss my gums and brush.
As a result, I've stopped snacking. Aside from avoiding overly sweet things, I think more about when I eat rather than what I eat. And in a way, limiting the amount of time you eat is another form of food restriction.
I'll update later with what my dentist says. I'm losing weight, but ...I'd really rather lose cavities.