The first thing to say is that she had dentist approval. She also had her kids stop eating processed sugar. And that might’ve been the reason the cavities stopped, but she was a healthy mom to begin with.
The results were a big success, from No Toothpaste, No Cavities:
Before we stopped toothpaste, and before we eliminated processed sugars, one of my children had a small cavity between two molars — not big enough to drill out, but enough for the dentist to watch.
At our first six month check-up post toothpaste, no cavities.
A year later, no cavities.
Eighteen months later, still no cavities.
Two years later, you guessed it, no cavities.
In the full article she describes what they used instead of toothpaste, how her own teeth improved, and that they still included weekly Sunday Sundaes in the diet. Well worth the read!
And, if you’re interested in learning more: