虫歯を侮ると命に係わる場合もあるのです。

tbd

Making light of cavities can be a matter of life and death.

先進国では虫歯が激減し、自分の歯で一生食べられる人が増えています。

tbd

Cavities have become rarer in the developed countries and more people will be able to eat with their own teeth throughout their life.

母親は子どもの歯を虫歯から守ってやらなければならない。

tbd

A mother must protect her child's teeth from decay.

彼女には虫歯が１本ある。

tbd

She has a decayed tooth.

虫歯を治療しろ。

tbd

Treat a decayed tooth.

虫歯はよく痛む。

tbd

Bad teeth often cause pain.

虫歯はひとりでにぬけてしまった。

tbd

The decayed tooth came out on its own.

虫歯は１本もありません。

tbd

I don't have any cavities.

虫歯ができちゃって、冷たい物を食べるとしみるんだ。

tbd

Since I developed this cavity, my tooth has been really sensitive to heat and cold.

歯磨きを怠って、その子は虫歯になった。

tbd

The boy had bad teeth because he neglected to brush them.