Khan MK, Bokhari SAH, Haleem A, Kareem A, Khan AA, Hosein T, Khan MU. Extrinsic stain removal with a toothpowder: A randomized controlled trial. IJHS [Internet]. 2014 Oct. 20 [cited 2024 Oct. 1];8(3). Available from: https://ijhs.qu.edu.sa/index.php/journal/article/view/828