Porcelain application and simulation of firing cycle: effect on marginal misfit of implantsupported frameworks

Authors

  • Márcia Mika Nakaoka São Lucas College
  • Jessica Mie Ferreira Koyama Takahash São Lucas College
  • Juliana Maria Costa Nuñez-Pantoja State University of Campinas
  • Rafael Leonardo Xediek Consani State University of Campinas
  • Marcelo Ferraz Mesquita State University of Campinas

DOI:

https://doi.org/10.20396/bjos.v9i3.8641813

Keywords:

Implant-supported prosthesis, Prosthesis fitting, Esthetic coverage, Titanium framework

Abstract

Aim: Success of implant-supported prostheses is related to the frameworks’ passive fit, hence inaccuracies can generate stress, leading to bone resorption and rehabilitation failure. This study evaluated misfit levels of implant-supported frameworks after different coverage treatments. Methods: Twenty commercially pure titanium (CP Ti) frameworks were manufactured with 5 Branemark type multi-unit abutments. Frameworks were distributed in two groups as follows: G1 - porcelain application (n=10); G2 - porcelain firing cycle simulation (n=10). Using a traveling microscope, marginal misfit was measured before and after undertaking the techniques, following the single-screw test protocol. All data were submitted to ANOVA and Tukey’s test (p<0.05). Results: Initial marginal misfit values were not significantly different, but both groups presented significantly higher misfit values after treatment: G1: 233.99 µm (p=0.0003); G2: 119.75 µm (p<0.0001). In addition, G1 presented higher misfit than G2 (p<0.0001). Conclusions: Porcelain application promoted significantly higher increase of misfit, which indicates that such procedure should be considered on misfit analysis of implant-supported prostheses.

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Author Biographies

Márcia Mika Nakaoka, São Lucas College

DDS, MS, PhD, Dentistry School, São Lucas College, Porto Velho, RO

Jessica Mie Ferreira Koyama Takahash, São Lucas College

DDS, MS, PhD, Dentistry School, São Lucas College, Porto Velho, RO

Juliana Maria Costa Nuñez-Pantoja, State University of Campinas

DDS, MS, Department of Prosthodontics and Periodontology – Piracicaba Dental School – State University of Campinas, Piracicaba, SP

Rafael Leonardo Xediek Consani, State University of Campinas

DDS, MS, PhD, Department of Prosthodontics and Periodontology – Piracicaba Dental School – State University of Campinas, Piracicaba, SP

Marcelo Ferraz Mesquita, State University of Campinas

DDS, MS, PhD, Department of Prosthodontics and Periodontology – Piracicaba Dental School – State University of Campinas, Piracicaba, SP

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Published

2015-11-18

How to Cite

1.
Nakaoka MM, Takahash JMFK, Nuñez-Pantoja JMC, Consani RLX, Mesquita MF. Porcelain application and simulation of firing cycle: effect on marginal misfit of implantsupported frameworks. Braz. J. Oral Sci. [Internet]. 2015Nov.18 [cited 2020Oct.30];9(3):376-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641813

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