I used to believe that when you got to certain age you had all your teeth removed, this was because both my parents have false teeth. (I now attend the dentist regularly!)
A childhood belief about getting older

others believed things like this
- 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
- 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
- Until I was about 8 I believed that your back teeth keep growing in until you have a full circle of teeth.Anon
- Until I was around 8 or 9 years old, I thought dentists took your teeth out and replaced them with new teeth.— Verapamilo