1.
Khan WU, Abdullah S, khan I, Jan HU. Effect of non-extraction orthodontic treatment of impacted and malposed maxillary canines on upper lip strain and thickness. POJ [Internet]. 2015 Oct. 18 [cited 2026 Jun. 13];7(1):25-9. Available from: https://www.poj.org.pk/index.php/poj/article/view/111