Reference: Sharh ‘Umdatil-Fiqh – Tape No.5, Question No.4
Question: If I use a toothbrush with the intention that it be a substitute for using a miswaak, would this be considered a Sunnah?
Response: That which is intended is to remove the smell from the mouth; so whatever is used to remove it, then that which is intended has been achieved – [whether it be] with a toothbrush, toothpaste or rubbing [the teeth] with the finger. [That said], however, the best type of toothbrush is the twig from the Arak [tree] – they are the best of the twigs with which to brush [the mouth and teeth] with, yes.
