Parents can improve the oral health of their children by setting a good example themselves.
Professor Robin Seymour from the Simplyhealth Advisory Research Panel said sons and daughters should see their mothers and fathers brushing their teeth.
"Encourage them to do likewise at the same time," the international healthcare specialist declared, adding: "Kids love copying us adults."
Furthermore, he told parents to take their offspring to the dentists so they can become used to having their teeth looked at by other people.
Other suggestions made by the professor include using toothpastes that contain fluoride, as well as avoiding fizzy drinks or refined carbohydrates.
Children should clean their teeth "at least twice a day", he added, noting that brushing before bedtime is "imperative".
He had previously recommended making oral healthcare routines such as brushing teeth a family activity, as well as ensuring that the toothbrushes children use are the "right size for their mouths".