Marginal fit of electroformed copings before and after the coction of the porcelain

Authors

  • Leonardo Buso School of Dentistry of São José dos Campos -UNESP
  • Edson Hilgert School of Dentistry of São José dos Campos – UNESP
  • Maximiliano Piero Neisser School of Dentistry of São José dos Campos – UNESP
  • Marco Antonio Bottino School of Dentistry of São José dos Campos

DOI:

https://doi.org/10.20396/bjos.v3i8.8641736

Keywords:

Electroforming. Crowns. Margin design. Marginal fit

Abstract

The aim of this study was to evaluate the marginal discrepancy of electroforming copings, before and after the porcelain application, varying the cervical preparation of the crowns.Two master die were prepared with stainless steel to complete crown margin designs: chamfer and rounded shoulder. The impressions were taken with a polyvinylsiloxane by the double impression technique and, the insertion and removal axis were standardized by a dental surveyor. Ten type IV plaster dies from each cervical margin were obtained, on which a die spacer was applied before duplicate. The duplicated dies received a silver layer and connected to a copper wire to enable the gold electrodeposition. After cleaning and adjustments all specimens were examined under a microscope (magnificatio X 30). The marginal gap was measured before and after ceramic application. The results were elaborated by descriptive statistical and two-way analysis of variance (ANOVA). The ANOVA revealed no significant difference between marginal gap before and after the ceramic application (p=5%). It was concluded that the porcelain application does not influence the marginal fit of copings, therefore the two marginal endings can be used with the electroforming system.

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Author Biographies

Leonardo Buso, School of Dentistry of São José dos Campos -UNESP

Possui graduação em Odontologia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1998), mestrado em Odontologia Restauradora pela Universidade Estadual Paulista Júlio de Mesquita Filho (2002) e doutorado em Odontologia Restauradora pela Universidade Estadual Paulista Júlio de Mesquita Filho (2005). 

Edson Hilgert, School of Dentistry of São José dos Campos – UNESP

Possui graduação em Odontologia pela Universidade Estadual Paulista Júlio de Mesquita Filho(1998), mestrado em Odontologia (Prótese Parcial Fixa) [S.J.Campos] pela Universidade Estadual Paulista Júlio de Mesquita Filho(2002), doutorado em Odontologia Restauradora pela Universidade Estadual Paulista Júlio de Mesquita Filho(2005), curso-tecnico-profissionalizantepela Escola Técnica Everardo Passos(1994), ensino-fundamental-primeiro-graupelo Colégio Nossa Senhora Aparecida(1989) e aperfeicoamento em Atualização Em Implantodontia pela Universidade de Taubaté(2000).

Maximiliano Piero Neisser, School of Dentistry of São José dos Campos – UNESP

Possui graduação em Odontologia pela Universidade de São Paulo (1972), mestrado em Odontologia (Prótese Buco-Maxilo Facial) [S.J.Campos] pela Universidade Estadual Paulista Júlio de Mesquita Filho (1992) e doutorado em Materiais Dentários pela Universidade Estadual de Campinas (1997).

Marco Antonio Bottino, School of Dentistry of São José dos Campos

has graduation at Odontologia by Universidade Estadual Paulista Júlio de Mesquita Filho (1968) and Ph.D. at Odontologia (Clínica Integrada) by Universidade de São Paulo (1973) . Currently is professor of Universidade Estadual Paulista Júlio de Mesquita Filho, Membro de corpo editorial of Revista da Associação Paulista de Cirurgiões Dentistas, Membro de corpo editorial of Revista Dental Press de Estética (Maringá), Membro de corpo editorial of Gaceta Dental, Membro de corpo editorial of Clínica. International Journal of Brazilian Dentistry, Membro de corpo editorial of Salusvita, Membro de corpo editorial of Pilares, Membro de corpo editorial of Ciência Odontológica Brasileira, Membro de corpo editorial of Pós-Graduação em Revista (FOSJC/UNESP), Revisor de periódico of Revista da Faculdade de Odontologia de Bauru, Membro de corpo editorial of RBP. Revista Brasileira de Implantodontia & Prótese sobre Implantes, Membro de corpo editorial of Implant News, Membro de corpo editorial of PCL. Revista Brasileira de Prótese Clínica & Laboratorial, Membro de corpo editorial of ImplantNews e Membro de corpo editorial of Implant News. Has experience in the area of Odontology. Focused, mainly, in the subjects: Prótese dentária, Cimentos dentários, Ciimentação, Coroas, Adaptação cervical. 

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Published

2015-11-13

How to Cite

1.
Buso L, Hilgert E, Neisser MP, Bottino MA. Marginal fit of electroformed copings before and after the coction of the porcelain. Braz. J. Oral Sci. [Internet]. 2015 Nov. 13 [cited 2022 Sep. 28];3(8):409-13. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641736

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