Iñiguez-Zúñiga, Gabriela, and Cristian Campoverde-Torres. “Facial Changes for Extraction of Maxillary First Premolars, Class II Subdivision 1 Malocclusions: Narrative Review”. CIENCIAMATRIA 9, no. 1 (April 15, 2023): 666-678. Accessed May 19, 2024. https://cienciamatriarevista.org.ve/index.php/cm/article/view/1092.