How to Say "tooth" in Spanish
The Spanish word for “tooth” is “diente” — A1 level. This is a very common word in everyday Spanish.

Examples
Necesito ir al dentista porque me duele un diente.
I need to go to the dentist because a tooth hurts.
Los tiburones tienen muchas filas de dientes afilados.
Sharks have many rows of sharp teeth.
Mi hijo perdió su primer diente de leche hoy.
My son lost his first baby tooth today.
Gender Check
Even though 'diente' ends in '-e', it is masculine: el diente. This is an exception to some common rules, so remember it with the article.
Possessive Articles
Mistake: “Me lavo *mis* dientes.”
Correction: Me lavo *los* dientes. (In Spanish, when talking about routine actions on body parts, you usually use 'el/la/los/las' instead of 'mi/tu/su'.)
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