Here's an idea - if you pull out all of your teenage kid's teeth and replace them with dentures - like the Amish often do - your child will not have to worry about washing those either. And you'll save a fortune on dentist bills... I think it's every parent's right, to decide that for the child - after all they're the ones paying for it...
"The fact that a believer is happier than a skeptic is no more to the point than the fact that a drunken man is happier than a sober one." - George Bernard Shaw