Most young kids haven't had teeth long enough to have anything go wrong with them.
But a Finnish study has highlighted some interesting risk factors, according to a report in the Journal of Dental Research:
Researchers at the department of child neurology at the University of Turku in Finland found that:
If a child's mother is still in her teens, it's five times more likely that the child will have cavities by age 5.
If a child's father has at least one cavity each year, the chances that the child will have cavities by age 5 more than doubles.
If the child's mother doesn't brush her own teeth regularly, it doubles the likelihood that her child will have cavities.
Living in a rural area also doubles the chances of a child having bad teeth.