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Is it teeth whitening or tooth whitening because I see both forms?

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Newguest

Is it "teeth whitening" or "tooth whitening", because I see both forms?

As you say, you see both forms, and they're both correct.

Comments  

In the US you hear "tooth whitening," as in:


This is a tooth whitening paste.

We do a tooth whitening procedure.

 Rover_KE's reply was promoted to an answer.