Learn more about this word
Lavarse los dientes
Lavarse los dientes uses the definite article los, never a possessive. Spanish avoids mis dientes here because the reflexive pronoun already tells you whose teeth they are.
Examples in context
Me lavo los dientes después de desayunar.
I brush my teeth after breakfast.
Los niños se lavan los dientes solos.
The children brush their teeth by themselves.
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