By example
You have to show him how to brush his teeth and then you have to brush your teeth when he's brushing, too. This way he can see that you're brushing your teeth and follow your example. - Francine Goonting, mother of one boy aged three years old

No problem
I helped them to brush their teeth initially and after that they managed to brush their own teeth. It was quite easy. When they were younger they used the flavoured toothpaste. They still use the fancy toothbrushes now – the younger ones, that is. - Cafflin Wee, mother of three girls and one boy aged seven to 16

Do it together
My daughter brushes her teeth with me, so I do it and then she does it. I brush up and she brushes up; I brush down and she brushes down. - Maznita Mokhtar, mother of two girls aged one and three years old