Can we do wudhu while wearing invisalign?

Bismillahi Ta’ala

Walaikum Assalam Warahmatullah,

Washing of inner part of the mouth through maḍmaḍah (motion of rinsing the mouth) is sunnah of a Wudhu’.

ʿAllāmah Shurunbulālī rh. mentions in Imdād al-Fattāḥ Sharḥ Nūr al-Īḍāḥ,

“It is not obligatory to cause water to reach the concealed part of the lips when they are closed in their usual manner, because what is enclosed is considered part of the mouth, according to the most correct opinion, and what is visible is considered part of the face.” (Pg. 71)

Regarding your question, while their website suggests that it is not designed to formulate a water tight seal, Invisalign may prevent water from coming in contact parts of the teeth. This does not affect the validity of wudhu’.

Although one would not be able to do their maḍmaḍah properly with them on, and thus loose out on rewards of Sunnah. We suggest to remove them before making maḍmaḍah.

Wallahu A’lam

And Allah Ta’āla Knows Best
Mufti Faisal al-Mahmudi