Search results for "Design characteristics"

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Design characteristics, primary stability and risk of fracture of orthodontic mini-implants: Pilot scan electron microscope and mechanical studies

2013

Objectives: Orthodontic mini-implants (OMIs) are increasingly used in orthodontics but can fail for various reasons. This study investigates the effects of OMI design characteristics on the mechanical properties in artificial bone. Material and Methods: Twelve self-drilling OMIs (2 small, 6 medium, 4 large) from 8 manufacturers were tested for their primary stability in simulated medium-high cancellous bone and the risk to fracture in high-density methacrylate blocks. For the assessments of the maximum insertion torque (IT) and torsional fracture (TF) 5 of each OMI were used and for the pull-out strength (POS) 10. The OMIs were inserted with a torque screwdriver (12 sec/360°) until the bott…

Insertion torqueDental Stress Analysisprimary stabilityArtificial boneMaterials scienceorthodontic mini-implantsTorsion MechanicalOdontologíatorsional fractureProsthesis Designpullout strengthDesign characteristicslaw.inventionMecànica de fracturalawRisk FactorsMaterials TestingBiomaterials and Bioengineering in DentistrymedicineOrthodontic Anchorage ProceduresFracture mechanicsGeneral Dentistry:Enginyeria dels materials::Desgast de materials [Àrees temàtiques de la UPC]Implants artificialsTorsion (mechanics)Implants ArtificialPullout strength:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludProsthesis Failuremedicine.anatomical_structureOtorhinolaryngologyMini implantsUNESCO::CIENCIAS MÉDICASMicroscopy Electron ScanningSurgeryResearch-ArticleElectron microscopeCancellous boneinsertion torqueBiomedical engineering
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