overbite

いわゆる「出っ歯」のことを英語では、

overbite

と言うそうです。知りませんでした。

A woman who was branded 'horse face' due to her extreme overbite says a £25,000 jaw operation has made her feel like a new woman - and she's even been compared to Kate Beckinsale. 

Olivia Boardman, 29, who lives in Wembley, London, was taunted by bullies since the age of 10, when fellow pupils first noticed her overbite, which occurs when the front teeth protrude far beyond the bottom row of teeth.

But the cosmetic problem soon transformed into a health one when Olivia began experiencing sleep apnoea and lower oxygen levels to her brain - both caused by her overbite.

The film and TV trailer maker, who's originally from Manchester, said the condition made her feel confused and tired all the time, and things became so dire she even swore off dating.

But now after going under the knife, Olivia says she has a new lease of life and is flattered at being mistaken for a 'supermodel'. 

(Maria Okanrende. Bullies used to call me 'horse face' because of my overbite so I paid £25,000 to fix it - now people say I look like Kate Beckinsale. Daily Mail. November 9, 2023.)

「出っ歯」とは文字通り、前歯が突出している状態です。

記事に出てくる29歳女性は出っ歯のために顔貌が馬のようだと揶揄され悩んでいましたが、手術により矯正をしたところ見違えるような美貌になったとあります。

"overbite"という単語は歯科学の用語では、過蓋咬合という訳語がつけられています。過蓋咬合は歯の噛み合わせ（bite）が正常ではないとされる不正咬合（malocclusion）の一種とされます。

記事にもありますが、過蓋咬合は見た目の問題のみならず、睡眠時の呼吸に影響を及ぼすなどの健康面での問題をもたらします。