TY - JOUR AU - Hilgert, Edson AU - Buso, Leonardo AU - Neisser, Maximiliano Piero AU - Bottino, Marco Antonio PY - 2015/11/17 Y2 - 2024/03/28 TI - Evaluation of marginal adaptation of ceramic crowns depending on the marginal design and the addition of ceramic JF - Brazilian Journal of Oral Sciences JA - Braz. J. Oral Sci. VL - 3 IS - 11 SE - Article DO - 10.20396/bjos.v3i11.8641778 UR - https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641778 SP - 619-623 AB - This study evaluates the marginal adaptation of ceramic copings front of two finish lines and addition of ceramic. Hence, two master steel dies were milled with all-ceramic crowns preparation, one with a round shoulder finish line margin design, and the other with a deep chamfer. From each one of them, 15 copings were made, and the marginal discrepancy was evaluated in measuring microscope. The ceramic addition was accomplished in both groups with aid of a silicone matrix, and the discrepancies were measured again, obtaining the final mean gap values. The initial measurements resulted means of 44,0µm for deep chamfer and 24,0µm for the round shoulder, and the final measurements were 53,3µm for the deep chamfer and 27,4µm for the round shoulder. The data were submitted to the analysis of variance for verification of influence of the finish lines and application of the ceramic. When analyzed the interaction among the variables it was not observed statistical differences, but when comparing the two types of finish lines or the groups before and after ceramic addition, statistical differences were found. It is was concluded that the round shoulder finish line presents better values of marginal gap than deep chamfer and the addition of ceramic influences in the final gap values of marginal adaptation. ER -