Gutiérrez Marín, N., & López Soto, A. (2014). Space maintainers placed from 2008 to 2011 at the School of Dentistry, University of Costa Rica. Odovtos - International Journal of Dental Sciences, (15), 13–19. Retrieved from https://revistas.ucr.ac.cr/index.php/Odontos/article/view/13729