Deformation of implant abutments after framework connection using strain gauges

The Journal of Oral Implantology
Henrique HollwegJose Henrique Rubo

Abstract

When a cylinder is connected to an abutment it is expected that abutment and cylinder will be subjected to compression forces throughout their periphery because of the clamping force exerted by the screw. The deformation resultant of this compression should be measurable and uniform along the periphery of the abutment. Considering that multiple retainers connected to each other can affect the fit of a framework, as well as the use of different alloys, it is expected that the abutments will present different levels of deformation as a result of framework connection. The aim of this study was to evaluate the deformation of implant abutments after frameworks, cast either in cobalt-chromium (CoCr) or silver-palladium (AgPd) alloys, were connected. Samples (n  =  5) simulating a typical mandibular cantilevered implant-supported prosthesis framework were fabricated in cobalt-chromium and silver-palladium alloys and screwed onto standard abutments positioned on a master-cast containing 5 implant replicas. Two linear strain gauges were fixed on the mesial and distal aspects of each abutment to capture deformation as the retention screws were tightened. A combination of compressive and tensile forces was observed on the abutments for bo...Continue Reading

References

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Jul 1, 1989·The Journal of Prosthetic Dentistry·C J Goodacre
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Jan 28, 2009·The Journal of Oral Implantology·Jose Henrique Rubo, Edson Antonio Capello Souza
Jun 6, 2009·Clinical Oral Implants Research·Letícia Borges JacquesJosé Henrique Rubo

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Citations

Mar 10, 2016·Materials Science & Engineering. C, Materials for Biological Applications·Cláudia Lopes Brilhante BheringMarcelo Ferraz Mesquita
Jun 25, 2016·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Marco DegidiFrancesco Tornabene
Jul 16, 2014·Journal of Applied Oral Science : Revista FOB·Antônio Francisco GrandoJosé Henrique Rubo

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