Objectives:The exposed work aimed to check the Brazilian industry prosthetic components fits, such as gold-UCLA on the implant hexagons, before and after palladium-silver overcasting.Methods:Like basis, six Nobel Biocare implants, with 3.75mm of diameter per 13mm of length were used, over which the compatible gold-UCLA components were screwed into them.Five units from each different companies("Conexão","Tianium fix","Serson" and "Pec Lab") were obtained.Every gold screws received a 20Ncm tork).After first readings, made in a SEM,gold-UCLA received similar pattern-wax, based in a silicone index, made from a control group waxing.All casting process was pattern configurated and the overcasting strutures were screwed again into the implants and taken to SEM.Beginning and final images - processed with a 2,000 times enlargement - were measured with a linear mensuration software.Results: Results showed that the components pruduced by Conexão, Titanium fix and Serson didn`t show up statistically considerable differences from Nobel Biocare group control.Among Brazilian companies there are statistically considerable differences between Conexão and Pec Lab (p<0,05);Casting process didn`t produce statistically considerable differences in the adaptation of gold-UCLA(p=0,304).Conclusion:It is possible to make the substitution of Nobel Biocare components for the trades Conexão Titanium fix and Serson with no prejudice on the adaption quality.