As a baby, I used to have to clean Joseph's teeth while he slept. I used my extra long finger nail (on the pinky finger) to scrape off the plaque! Certainly this is not taught in dental school. But because he refuses to have anything stuck in his mouth, this was the only way to ensure clean teeth.
Now that he is older, he understands why he needs to brush his teeth. I also tell him that if he doesn't brush clean, lizards and cockroaches will come out at night to hunt for the food debris in his mouth.
He is also very disciplined with junk food. Whenever he receives a packet of twisties or cheezels or whatever else, he will keep until he has got my permission to eat. And if I say "no", he doesn't eat it.
Joy-Anne is still not very compliant with brushing. She lies still for 5 seconds and then starts turning away. Five seconds is not sufficient for a thorough brushing. At 2 years old, she already has 2 restorations and many more hypocalcified surfaces.
And she does not seek my permission with food given by other people. Just last week, our cg leader's daughter was giving out chocolates after dinner. And before we knew it, Joy had her entire face and both hands covered with chocolate!!! Apparently, Ashlyn asked Joy if she could eat and Joy happily said, "YES!"