Implant-supported titanium framework: photoelastic analysis before and after spark erosion procedure

Authors

  • Mauricio Pompeu Cariello State University of Campinas
  • Mauro Antonio de Arruda Nóbilo State University of Campinas
  • Guilherme Elias Pessanha Henriques State University of Campinas
  • Marcelo Ferraz Mesquita State University of Campinas
  • Rafael Leonardo Xediek State University of Campinas
  • Andréa Fabiana de Lira State University of Campinas

DOI:

https://doi.org/10.20396/bjos.v9i1.8641979

Keywords:

Titanium, Misfit, Implant, Framework

Abstract

Aim: This study used a photoelastic analysis to evaluate the passive fit of titanium cast laser welding frameworks before and after spark erosion procedure. Methods: A stainless steel cast was used in order to reproduce a human mandible. Five Multi-Unit abutment analogs were attached to this cast and 6 frameworks were produced in commercial pure titanium. The cast was molded and a photoelastic matrix was produced incorporating 5 dental implants with Multi-Unit abutments. All samples were subjected to a laser welding. The precision of adjustments within a range of 0.5 µm was evaluated under microscope observation. The best fitted framework was selected and subjected to a photoelastic analysis (Group I). The tightening of the screws was in 3 predetermined sequences (1,2,3,4,5/ 5,4,3,2,1/ 3,2,4,1,5). Then the same framework was subjected to a refinement by spark erosion technique (Group II) and evaluated by photoelastic analysis. Results: The sequence (3,2,4,1,5) achieved better results in both groups. A larger number of fringes were observed around the median implants in all sequences in both groups. Conclusions: The titanium cast laser welded frameworks processes associated with spark erosion procedure improves significantly the marginal framework adaptation and is effective for its passive fit.

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Author Biographies

Mauricio Pompeu Cariello, State University of Campinas

PhD level student, Department of Prosthodontics and Periodontology, Area of Fixed Denture, Piracicaba Dental School, State University of Campinas

Mauro Antonio de Arruda Nóbilo, State University of Campinas

Professor, Department of Prosthodontics and Periodontology, Area of Fixed Denture, Piracicaba Dental School, State University of Campinas

Guilherme Elias Pessanha Henriques, State University of Campinas

Professor, Department of Prosthodontics and Periodontology, Area of Fixed Denture, Piracicaba Dental School, State University of Campinas

Marcelo Ferraz Mesquita, State University of Campinas

Professor, Department of Prosthodontics and Periodontology, Area of Complete Denture, Piracicaba Dental School, State University of Campinas

Rafael Leonardo Xediek, State University of Campinas

Professor, Department of Prosthodontics and Periodontology, Area of Complete Denture, Piracicaba Dental School, State University of Campinas

Andréa Fabiana de Lira, State University of Campinas

PhD level student, Department of Prosthodontics and Periodontology, Area of Fixed Denture, Piracicaba Dental School, State University of Campinas

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Published

2015-11-29

How to Cite

1.
Cariello MP, Nóbilo MA de A, Henriques GEP, Mesquita MF, Xediek RL, Lira AF de. Implant-supported titanium framework: photoelastic analysis before and after spark erosion procedure. Braz. J. Oral Sci. [Internet]. 2015 Nov. 29 [cited 2022 May 18];9(1):48-53. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641979

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