Cerda Altamirano, J.P. and Vallejo, K. 2020. Adaptation of straight pillars on implants with internal and external hexagonal connection by scanning electronic microscopy. Odontología. 22, 1 (Jan. 2020), 21–35. DOI:https://doi.org/10.29166/odontologia.vol22.n1.2020-21-35.