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Retention and mechanical behavior of attachment systems for implant-retained auricular prostheses

dc.contributor.authorSigua-Rodriguez E.A.
dc.contributor.authorGoulart D.R.
dc.contributor.authorSantos Z.T.
dc.contributor.authorAlvarez-Pinzon N.
dc.contributor.authorOlate S.
dc.contributor.authorDe Albergaria-Barbosa J.R.
dc.date.accessioned2020-09-02T22:28:16Z
dc.date.available2020-09-02T22:28:16Z
dc.date.issued2017
dc.identifier10.1097/SCS.0000000000003269
dc.identifier.citation28, 1, 134-138
dc.identifier.issn10492275
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6257
dc.descriptionObjective: Auricular prostheses are artificial substitutes for facial defects. The retention of these has often been a problem. This study aimed to evaluate the mechanical behavior of 3 retained auricular prosthetic connections when submitted to a mechanical cycling test. Materials and Methods: Twelve samples with installed implants were obtained and divided into 3 groups according to their retention system with 4 samples in each group. I: bar-clip system; II: magnet system; and III: ball/o-ring system. Each of samples was submitted to the pull-out test during 3240 cycles (f=0.5 Hz) to determine its tensile strength. The mechanical cycling test was performed using the servo-hydraulic machine MTS 810-Flex Test 40 (Eden Prairie, MN) that had a 2.5mm shift at a 10 mm/s velocity. The retaining strength for each of the samples was obtained at 7 intervals. Results: The tensile strength for the group retained by the bar-clip system (29.60 N) was higher with statistically significant difference (P<0.05) when compared with the group retained by the ball/oring system (9.41 N) and magnets system (8.61 N) for all periods assessed. The ball/o-ring system showed loss of retention during the fatigue test (Kruskal-Wallis, chi-squared=17.28; P<0.01). Conclusions: The evaluated systems showed a tensile strength compatible with the clinical use and no fractures of the components were observed.
dc.language.isoen
dc.publisherLippincott Williams and Wilkins
dc.subjectMaxillofacial prosthesis
dc.subjectProsthesis retention
dc.subjectTensile strength
dc.subjectbiomechanics
dc.subjectbone implant interface
dc.subjectcomparative study
dc.subjectexternal ear
dc.subjecthuman
dc.subjectprocedures
dc.subjectprostheses and orthoses
dc.subjectprosthesis complication
dc.subjectprosthesis design
dc.subjectprosthesis fixation
dc.subjectsurgery
dc.subjecttensile strength
dc.subjectBiomechanical Phenomena
dc.subjectBone-Implant Interface
dc.subjectEar, External
dc.subjectHumans
dc.subjectProstheses and Implants
dc.subjectProsthesis Design
dc.subjectProsthesis Failure
dc.subjectProsthesis Retention
dc.subjectTensile Strength
dc.titleRetention and mechanical behavior of attachment systems for implant-retained auricular prostheses
dc.typeArticle


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