Answered by Shaykh Yusuf Weltch
Question
What does one do if they have impermissible and therefore impure meat stuck in their teeth while praying?
Answer
In the Name of Allah, the Most Merciful and Compassionate
The prayer is sound.
Having food stuck between the teeth does not invalidate the prayer. Furthermore, it is unlikely that the meat, although impure, exceeded the excused amount of impurity for the prayer. [Tahtawi/Shurunbulali, Hashiyat Maraqi al-Falah]
Hope this helps
Allah knows best
[Shaykh] Yusuf Weltch
Checked and Approved by Shaykh Faraz Rabbani