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Evaluation of failed implants by metallographic and energy dispersive x-ray analysis

dc.contributor.authorde Alcântara Pinto C.M.S.
dc.contributor.authorGoulart D.R.
dc.contributor.authorAsprino L.
dc.contributor.authorOlate S.
dc.contributor.authorde Moraes M.
dc.date.accessioned2020-09-02T22:31:00Z
dc.date.available2020-09-02T22:31:00Z
dc.date.issued2018
dc.identifier10.1097/ID.0000000000000700
dc.identifier.citation27, 1, 69-73
dc.identifier.issn10566163
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6678
dc.descriptionObjective: To evaluate the microscopic structure and chemical composition of titanium dental implants removed from patients with implant failure. Materials and Methods: Thirty-eight dental implants removed from 29 patients between January 2012 and September 2014 were studied by metallographic analysis, and 7 of these implants were also studied by energy-dispersive x-ray (EDX) analysis. Medical records of these patients were examined. Results: Dental implants were removed in a median of 54.6 ± 88.1 weeks after insertion. The lack of osseointegration without symptomatology or signs of infection was the main reason for implant failure (55.17%). Seventeen patients presented implant failure in the maxilla and 12 patients in the mandible. Metallographic analysis revealed that all the dental implants were manufactured from commercially pure titanium, presenting microscopic uniform appearance, with no “alpha case”. The implants studied by EDX analysis presented between 99.85% and 99.87% of titanium and 0.13% and 0.15% of iron by mass. All the implants evaluated were within the ASTM specifications in both analyses. Conclusion: There was no relationship between dental implant failure and the microscopic structure and chemical composition of these devices. Copyright © 2018 Wolters Kluwer Health, Inc.
dc.language.isoen
dc.publisherLippincott Williams and Wilkins
dc.subjectDental materials-osseointegration
dc.subjectProstheses and implants
dc.subjectTitanium
dc.subjecttitanium
dc.subjectadverse device effect
dc.subjectdental restoration
dc.subjectfemale
dc.subjecthuman
dc.subjectmale
dc.subjectmiddle aged
dc.subjectprocedures
dc.subjectspectroscopy
dc.subjecttooth implant
dc.subjecttooth implantation
dc.subjecttorque
dc.subjectDental Implantation, Endosseous
dc.subjectDental Implants
dc.subjectDental Restoration Failure
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectMiddle Aged
dc.subjectSpectrometry, X-Ray Emission
dc.subjectTitanium
dc.subjectTorque
dc.titleEvaluation of failed implants by metallographic and energy dispersive x-ray analysis
dc.typeArticle


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