PMID: 8964778Apr 1, 1996Paper

Relative friction minimization in fixed orthodontic bracket appliances

Journal of Biomechanics
V Schlegel

Abstract

The biomechanical and mathematical analysis of friction on an arch wire/bracket combination and the wire supports has demonstrated that there is an optimal relationship, i.e. minimal friction forces, between the bracket width and the distance between the adjacent brackets on the neighboring teeth. With this optimal situation, less force will develop for a given deflection of the arch wire. This, in turn, will lead to fewer frictional effects when the friction forces are assumed to be proportional to the concentrated perpendicular forces on the arch wire. As long as the contacting surface can be regarded as a point, Coulomb's law of friction can be applied in its simplest form. Relative friction minimization can thereby be qualitatively and quantitatively obtained by linear theory for any specified angulation, wire properties and coefficients of friction. Literature stating that narrow brackets will lead to less friction for specified angulation cannot be confirmed according to the presented analysis. The other extreme statement 'Use the widest bracket possible' also cannot be used in principle. Since the analysis shows a mathematical relationship between most of the relevant design variables of an arch wire/bracket combination ...Continue Reading

References

Oct 1, 1990·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·R P Kusy, J Q Whitley
Aug 1, 1990·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·S KapilaR S Nanda
Sep 1, 1989·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·D C Tidy
Oct 1, 1989·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·G F Schudy, F F Schudy
Nov 1, 1989·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·D DrescherH A Schumacher
Mar 1, 1970·Journal of Biomechanics·G F Andreasen, F R Quevedo
Dec 1, 1980·American Journal of Orthodontics·C A Frank, R J Nikolai
Jul 1, 1993·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·T D Creekmore, R L Kunik
Jun 1, 1993·European Journal of Orthodontics·J C Moore, N E Waters

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Citations

May 13, 2005·Orthodontics & Craniofacial Research·S Al-KhatibG Willems
Jan 18, 2003·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Bo-Sun KangWon-Sik Yang

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