Panezai, Saadia, Nasrullah Mengal, and Sadia Nisar Ahmed. “COLLUM’S ANGLE AND CROWN ROOT ANGLE OF MAXILLARY INCISORS IN DIFFERENT MALOCCLUSIONS”. Pakistan Armed Forces Medical Journal 71, no. 1 (February 24, 2021): 238–42. Accessed April 25, 2024. https://pafmj.org/PAFMJ/article/view/4983.