Yes you can. Miswak is not a food substance that you swallow to break your fast, it is just a brush for your teeth.
The Prophet (peace be upon him) told Muslims to use Miswak for each Salah (Al-Bukhari) and did not exclude Ramadan from it.
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Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.