Estudio comparativo in vitro del asentamiento entre abutment prefabricados y fresados después de ser torqueados sobre sus conexiones

Abstract

Introduction: Nowadays, different dental treatments are performed on dental implants. It can be found from the rehabilitation of a single tooth to a crossed arch and in these treatments of vital importance in the complements or accessories, inside these pillars, the prefabricated pillars that are made by the commercial house and cloned, these have the possibility of have some level of gap or significant discrepancy. Objective: to compare the settlement between a prefabricated pillar and a cloned abutment torqueados on the implant. Materials and methods: An in vitro experimental study was carried out. In this study 30 implants are used, with fifteen (15) prefabricated abutment, made of titanium and fifteen (15) milling which are placed in a cube of acrylic resin, they are made a vertical cut in which 4 points are established . A Bego router is used to perform the cross sections by measuring the mismatch margin with a Carl Zeis microscope, and by the operating system which throws its measurements in microns. The distribution of the data of the dependent variable was evaluated using the Shapiro-wilk test. The comparison of the two groups will be carried out using the student's t-test in case the data present a distribution with normal tendency and with Mann-Whitney Results: The study shows that there is a statistically significant difference (p 0.04) between the average group measurements of the prefabricated implant-abutment connection vs the sintered implant-abutment connection group, the average being higher and the CI for the sintered ones. the prefabricated ones and the standard deviation is greater for the prefabricated ones on the sintered ones. Conclusion: It is concluded that the system of pillars corresponding to the group "A" that belongs to the prefabricated abutments presents a smaller micro-space at the level of the pillar-implant interface in comparison with the cloned pillars. With regard to the people between the prosthetic abutment in their intimate relation of the implant, a smaller microspace is observed for the prefabricated abutments when compared with those elaborated by the CAD / CAM system.