Dental abnormality - needle-like teeth in children

Yesterday on the train (here in Osaka) I saw a kid with what appeared to be a dental abnormality - his upper fronth teeth were needle shapped. His bottom teeth were normal. I was wondering what might cause this.

How old was the ‘kid’? Sure it wasn’t an adolescent style?

He was about 5 years. It wasn’t style.

My son has one tooth like this. The dentist called it a “peg-leg” tooth. He said there was nothing that we did to cause the tooth to grow like that; it’s just an abnormality but fairly common.

Also my daughter’s friend had all her upper front teeth like this. Later she had them capped to look like normal teeth.

WAG – back in summer camp I saw a kid who had a bunch of top teeth that had come in almost perfectly sideways (leaving a lot of space between them too). So from straight on he looked like he had “needle teeth,” but if you got closer you could see that they had just come in dreadfully crooked. I remember that he couldn’t eat apples without cutting them up first.

I was only five at the time. Never saw the kid after that year, so I don’t know what happened when his “baby teeth” fell out and his adult teeth grew in.