cepillarían
-they would brush
The word cepillarían is the conditional form of cepillar in the third person plural.
See the full cepillar conjugation

cepillar

Te cepillarían al primer día y sería culpa mía.
You'd get wasted the first day and it would be my fault.
Este es el concepto de si los pacientes sentían que realmente se cepillarían los dientes o no.
This was the notion of whether the patients felt that they actually would go ahead and brush and floss their teeth.
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