Stress distribution and deformation in six tie wings Orthodontic bracket during simulated tipping - A finite element analysis.

Computer Methods and Programs in Biomedicine
Pandurangan Harikrishnan, Varadaraju Magesh

Abstract

Four tie wings brackets are widely used in orthodontics, while the Six Tie Wings Brackets (STWB) are recently emerging in fixed orthodontic appliances due to their claim for less friction and thus faster teeth movement. The aim of this work was to evaluate the stress distribution and deformation during simulated mesio-distal tipping forces in Stainless Steel (SS) six tie wings orthodontic bracket using Finite Element Analysis (FEA). A six tie wings bracket (Synergy®, RMO, USA) dimensions were measured using the Vision system and a 3D model of the bracket was constructed. A Finite Element (FE) model was developed and mesio-distal tipping forces of 1.22 N to 1.96 N (125 to 200 gm) in increments were applied on the gingival and incisal slot walls. The stress distribution and deformation were recorded at specific points in the bracket and analyzed. The maximum deformation and stress distribution for the mesial and distal tipping forces of 1.96 N were recorded as 0.137 µm and 10.60 MPa respectively. The stress concentration was more at the junction of the slot wall and the slot base. For mesial tipping,the deformation was more on the disto-incisal and mesio-gingival tie wings. Similarly, for distal tipping the deformation was more o...Continue Reading

References

Apr 1, 1984·American Journal of Orthodontics·R J Smith, C J Burstone
Dec 1, 1995·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·J GhoshG F Currier
May 6, 2008·Journal of Dentistry·N WakabayashiY Igarashi
Apr 4, 2015·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Mona A MontasserChristoph Bourauel
Mar 8, 2018·Computer Methods and Programs in Biomedicine·Iman Z OskuiAkiko Kato
Apr 1, 2018·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Varadaraju MageshDevadhas Kingsly Jeba Singh

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