Establishment of a three-dimensional finite element model of transmission straight wire appliance

doi:10.3969/j.issn.2095-4344.2013.33.007

Abstract

Abstract:

BACKGROUND: With the development of modern orthodontics, to invent an efficient appliance is the focus in recent studies. Transmission straight wire appliance was born on this background. This appliance can accelerate occlusion and shorten treatment duration. The relationship between distal width and angulation of gable bends of main arch wire needs to study in depth.
OBJECTIVE: To establish three-dimensional finite element model of transmission straight wire appliance with better biological and mechanical similarity, and to obtain the relationship between distal width and angulation of gable bend of main arch wire.
METHODS: By using scanning of spiral CT with 64 rows, the sectional image data in DICOM format of maxillary dentition and maxillae of the volunteers (Class Ⅱ, division 1) were obtained. With the help of Ansys workbench 13.0, Mimics 10.01, Unigraphics NX and Geomagic Studio 8.0 softwares, the three-dimensional finite element model including transmission straight wire appliance, bend, Australian Orthodontic Wire, maxillae, maxillary tooth and periodontal ligament was established in Windows XP Service Pack 3 system.
RESULTS AND CONCLUSION: A three-dimensional finite element model of transmission straight wire appliance was established, which consisted of 250 929 elements and 657 766 nodes. Furthermore, three-dimensional finite element model had higher geometric similarity and mechanical similarity, as well as the advantages of adding or subtracting components according to the requirement of the research. The model was conductive to analyze the mechanical system of transmission straight wire appliance and guide the clinical application and appliance modification.

CLC Number:

R318

Ding Rui, Man Yun-na, Wu Pei-ling, Wang Wei. Establishment of a three-dimensional finite element model of transmission straight wire appliance[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2013.33.007.

Figures/Tables 2

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