When I was young, I was told by my dentist about "tartar" on my teeth. For years, I believed that "tartar" sauce was made from the tartar dentists scraped off your teeth and I absolutely refused to eat it.
A childhood belief about general

others believed things like this
- Until I was around 8 or 9 years old, I thought dentists took your teeth out and replaced them with new teeth.— Verapamilo
- When I was very young, I assumed that false teeth were taken from dead people's teethAnon
- I used to believe my dentist could give me a shot to straighten my teeth and prevent cavities.— sircigar
- Until I was about 8 I believed that your back teeth keep growing in until you have a full circle of teeth.Anon
- I used to believe that eating burnt toast would make your teeth whiter and would brush your teeth for you.— Natasha
- I used to believe that if I didn't brush my teeth at night, ants would crawl into my mouth and eat my teeth.Anon