Fatigue reliability of 3 single-unit implant-abutment designs

Leandro M. Martins, Estevam A. Bonfante, Ricardo A. Zavanelli, Amilcar C. Freitas, Nelson R F A Silva, Leonard Marotta, Paulo Coelho

Research output: Contribution to journalArticle

Abstract

Objectives: Because the mechanical behavior of the implant-abutment system is critical for the longevity of implant-supported reconstructions, this study evaluated the fatigue reliability of different implant-abutment systems used as single-unit crowns and their failure modes. Methods and Materials: Sixty-three Ti-6Al-4V implants were divided in 3 groups: Replace Select (RS); IC-IMP Osseotite; and Unitite were restored with their respective abutments. Anatomically correct central incisor metal crowns were cemented and subjected to separate single load to failure tests and step-stress accelerated life testing (n = 18). A master Weibull curve and reliability for a mission of 50,000 cycles at 200 N were calculated. Polarized-light and scanning electron microscopes were used for failure analyses. Results: The load at failure mean values during step-stress accelerated life testing were 348.14 N for RS, 324.07 N for Osseotite, and 321.29 N for the Unitite systems. No differences in reliability levels were detected between systems, and only the RS system mechanical failures were shown to be accelerated by damage accumulation. Failure modes differed between systems. Conclusions: The 3 evaluated systems did not present significantly different reliability; however, failure modes were different.

Original languageEnglish (US)
Pages (from-to)67-71
Number of pages5
JournalImplant Dentistry
Volume21
Issue number1
DOIs
StatePublished - Feb 2012

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Crowns
Exercise Test
Psychological Stress
Fatigue
Inosine Monophosphate
Incisor
Metals
Electrons
Light

Keywords

  • crown
  • dental abutments
  • dental implant
  • fatigue
  • fractography
  • Weibull analysis

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Martins, L. M., Bonfante, E. A., Zavanelli, R. A., Freitas, A. C., Silva, N. R. F. A., Marotta, L., & Coelho, P. (2012). Fatigue reliability of 3 single-unit implant-abutment designs. Implant Dentistry, 21(1), 67-71. https://doi.org/10.1097/ID.0b013e31823fcc9f

Fatigue reliability of 3 single-unit implant-abutment designs. / Martins, Leandro M.; Bonfante, Estevam A.; Zavanelli, Ricardo A.; Freitas, Amilcar C.; Silva, Nelson R F A; Marotta, Leonard; Coelho, Paulo.

In: Implant Dentistry, Vol. 21, No. 1, 02.2012, p. 67-71.

Research output: Contribution to journalArticle

Martins, LM, Bonfante, EA, Zavanelli, RA, Freitas, AC, Silva, NRFA, Marotta, L & Coelho, P 2012, 'Fatigue reliability of 3 single-unit implant-abutment designs', Implant Dentistry, vol. 21, no. 1, pp. 67-71. https://doi.org/10.1097/ID.0b013e31823fcc9f
Martins LM, Bonfante EA, Zavanelli RA, Freitas AC, Silva NRFA, Marotta L et al. Fatigue reliability of 3 single-unit implant-abutment designs. Implant Dentistry. 2012 Feb;21(1):67-71. https://doi.org/10.1097/ID.0b013e31823fcc9f
Martins, Leandro M. ; Bonfante, Estevam A. ; Zavanelli, Ricardo A. ; Freitas, Amilcar C. ; Silva, Nelson R F A ; Marotta, Leonard ; Coelho, Paulo. / Fatigue reliability of 3 single-unit implant-abutment designs. In: Implant Dentistry. 2012 ; Vol. 21, No. 1. pp. 67-71.
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