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A novel in vitro approach to assess the fit of implant frameworks

Abduo, Jaafar ; Bennani, Vincent ; Lyons, Karl ; Waddell, Neil ; Swain, Michael

Clinical oral implants research, 2011-06, Vol.22 (6), p.658-663 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

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  • Título:
    A novel in vitro approach to assess the fit of implant frameworks
  • Autor: Abduo, Jaafar ; Bennani, Vincent ; Lyons, Karl ; Waddell, Neil ; Swain, Michael
  • Assuntos: Chromium Alloys - chemistry ; Computer-Aided Design ; Dental Implants ; Dental Marginal Adaptation ; Dental Materials - chemistry ; Dental Prosthesis, Implant-Supported ; Dental Stress Analysis - instrumentation ; Dentistry ; Denture Design ; Denture, Partial, Fixed ; Humans ; implant framework fit ; Jaw, Edentulous, Partially - pathology ; Mandible - anatomy & histology ; Materials Testing ; model verification ; Models, Anatomic ; strain gauge ; Stress, Mechanical ; Surface Properties ; Torque ; Transducers ; Zirconium - chemistry
  • É parte de: Clinical oral implants research, 2011-06, Vol.22 (6), p.658-663
  • Notas: ark:/67375/WNG-QP74XWK0-J
    istex:F7E8BD0A2E5F70A0C882C11CFCB91235882D00F8
    ArticleID:CLR2019
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Objective: To introduce a new strain gauge approach to assess the fit of fixed implant frameworks. Materials and methods: A partially edentulous epoxy resin mandible model received two Straumann implants in the area of the lower left second premolar and second molar. The model was used to fabricate four zirconia and four identical cobalt–chromium alloy frameworks using a laboratory computer‐aided design/computer‐aided manufacturing (CAD/CAM) system. A total of four linear strain gauges were then bonded around each implant on the peri‐implant structure (mesial, distal, buccal, and lingual). The experimental part was composed of two phases: qualitative and quantitative. For the qualitative assessment, the model was verified by recording the response of each strain gauge while applying a near‐constant force of known directions on each implant. For the quantitative phase, the frameworks were attached on the implants and the screws were torqued to 15 N cm. Results: In the qualitative phase, the strain gauge response to every force direction was recorded. After attaching the frameworks, all frameworks produced measurable strains, but with different strain patterns. Upon correlating the two phases, the zirconia frameworks were found to be slightly smaller than the inter‐implant distance, whereas the cobalt–chromium alloy frameworks tended to be slightly larger than the inter‐implant distance. Conclusions: The proposed technique is not only valid for detecting implant framework misfit but also for determining the form of inaccuracies. Model verification is an essential informative step to aid the interpretation of the pattern of framework distortion. To cite this article: 
Abduo J, Bennani V, Lyons K, Waddell N, Swain M. A novel in vitro approach to assess the fit of implant frameworks. Clin. Oral Impl. Res. 22, 2011; 658–663
doi: 10.1111/j.1600‐0501.2010.02019.x
  • Editor: Oxford, UK: Blackwell Publishing Ltd
  • Idioma: Inglês
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