Gonzalo E, Vizoso B, Lopez-Suarez C, Diaz P, Pelaez J, Suarez MJ 
Materials 2020 Oct 30; 13(21):4873.OBJECTIVE
The aim of this study was to investigate the effect of two materials and methods of manufacturing implant abutments, milled titanium versus laser sintered Co-Cr, on the marginal misfit at the implant-abutment interface.
MATERIAL AND METHODS
Scanning electron microscopes (SEM) were used to geometrically measure the marginal vertical discrepancy of a total of 80 specimens, classified into eight categories, according to the implant system and abutment. The data were statistically analyzed by Student’s paired t test, one-way and two-way ANOVA with the Bonferroni-Holm correction at the significance level of p = 0.05
RESULTS
Milled titanium abutments demonstrated the lowest misfit values regardless of the implant system and within each implant system analyzed.
CONCLUSION
The implant system and the type of abutment influenced the misfit. Laser sintered Co-Cr abutments misfit values are within clinically acceptable discrepancies.
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