Delgado Montero, Víctor, and Ottón Fernández López. “Dentogingival Facial a Esthetic Parameters of the Provinces of Alajuela Y Guanacaste”. Odovtos - International Journal of Dental Sciences, no. 15 (March 10, 2014): 39–44. Accessed July 2, 2024. https://revistas.ucr.ac.cr/index.php/Odontos/article/view/13732.