One in four Japanese is totally lacking in wisdom… teeth


This short but interesting survey by Katte2Q into dentists and teeth revealed a few interesting numbers regarding Japanese teeth.

The Japanese for wisdom teeth is 親知らず, oyashirazu, or literally “without parents’ knowing”, which might suggest to the casual reader that it has something to do with one’s parents not noticing their adult child’s back teeth appearing, unlike with baby teeth and the main adult teeth. However, I have seen some sites that explain this further as meaning one’s parents tended to be dead before the teeth appeared…

I’ve not had mine removed, but my dentists have never mentioned anything about them, although I’ve got a slight (false?) memory of seeing an X-Ray with the bottom ones horizonal rather than vertical. Next check-up I’ll have to remember to ask!

Here’s an interesting dentist’s sign:

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