a bibliographic review on dental autologous transplantation and homologous transplantation was made in order to bring up to date the fundamental aspects about this topic. the factors necessary for the success of these transplantations are stressed: postoperative revascularization, reinsertion of the ligament to the bone and cement, and the importance of the integrity of the periodontal ligament. the indications and contraindications of dental transplantations, as well as the surgical technique, among other things, were analyzed. it is concluded that to transplant a tooth at least the cervical third of its root must be formed. transplanted teeth should be fixed in infraocclusion from 4 to 6 weeks. the traumatism of the follicular sac and the periodontal tissues of the tooth interfere the evolution of transplantations.