Fabrication of a new composite orthodontic archwire and validation by a bridging micromechanics model

Huang, Zheng‐Ming; Gopal, Renuga; Fujihara, K.; Ramakrishna, Seeram; Loh, Poey Ling; Foong, Kelvin Weng Chiong; Ganesh, Venkata; Chew, C. K.

doi:10.1016/s0142-9612(03)00093-0

Cited by 35 publications

(31 citation statements)

References 12 publications

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“…The curve demonstrated a low intensity hysterisis pattern below 0.5 N during unloading which might be associated with a residual flexural load of few fibers which could not be fractured during wire breakage. Failure in composite archwire was also described by predicted loaddeflections curves during FRC fabrication (Huang et al, 2003). The breakage could have altered the loads reading during the bending tests which might result in the lowest load means and in the not significantly differences between groups 1 and 3.…”

Section: Discussionmentioning

confidence: 99%

“…This does not agree with other studies that disclosed similar mechanical behavior of FRC wires with different fiber fractions and NiTi under 3-point bending tests. (Huang et al, 2003;Imai et al, 1998) In Figure 2 the flexural load-deflection curves of 0.016-in FRC under different deflections and temperatures are shown for comparison. The curves are similar until 2 mm of deflection when a failure is shown in FRC structure.…”

Section: Discussionmentioning

confidence: 99%

“…All of them have the flexibility; strength and chemical resistance needed for orthodontic purposes as well are clearly visible to observers. In order to improve the appearance of fixed orthodontic appliances, and thus to increase patient acceptance, several aesthetic materials have been used as an alternative to metals in bracket and wire manufacture (Huang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…It has been recognized that an aesthetic archwire can be made from continuous fibers or polymer matrix (Kapila and Sachdeva, 1989). The material can offer aesthetic features with different mechanical properties, which can be changed when modifications are performed in the type of fiber material, fiber content or fiber arrangement pattern (Huang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…For example, by changing the fiber material, arrangement, diameter or the number of filaments, stiffness properties can be altered, and thus, the kind of engagement between the wire and the bracket slot (Huang et al, 2003). In addition, the reinforced polymer composites in particular have the potential to be highly biocompatible, whilst maintaining suitable mechanical properties (Schlz et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Failure of Fiber Reinforced Composite Archwires

Scabell¹,

Elias²,

Fernandes³

et al. 2013

DENT

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The objective of this article is to investigate the mechanical properties and surface morphology of fiber-reinforced composite (FRC) wires. FRC (Optis) wire and a NiTi 0.016 in diameter were evaluated with a 3-point bending test on a universal testing machine at temperatures of 23±1oC and 37±1oC. The sample was cut to a size of 30mm and divided into 5 groups, each consisting of 6 specimens. Group 1, 2 and 5 were tested at 3.1-mm deflection, groups 3 and 4 at 1.5mm deflection. The hysteresis curves were compared and the surface morphology of the FRC wires was observed by SEM. Clear breakages occurred between fibers and Polymethylmethacrylate (PMMA) matrix union between 1.5-mm and 2.0-mm deflection. Before 1.5-mm, the wires showed no significant changes in their surface structure. The flexural load required to produce a deflection of 1.5 mm on NiTi was near double that for the FRC wires. ANOVA indicated differences (P<.001) except between Optis groups 1, 3 and 5 (P>.05). FRC wires displayed comparable load-deflection curves to NiTi until deflection of 2.0mm, whereas it could be considered a viable alternative to metallic wires during mild irregular alignment situations. Failure occurs due to fibers pullout and breakage at the fiber/composite matrix interface.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Failure of Fiber Reinforced Composite Archwires

Scabell¹,

Elias²,

Fernandes³

et al. 2013

DENT

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Pultrusion

Vázquez¹,

Escobar²

2012

Wiley Encyclopedia of Composites

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This article involves the principal aspects of the pultrusion of both thermosetting and thermoplastic polymer matrix. After a short introduction, in the first part, the pultrusion machine for thermosetting polymer matrix is described, followed by the modeling of processing parameters. The influence of pulling velocity, fiber type, residual thermal stress, additives, and fillers is studied. Also, the importance of controlling the temperature profile in order to allow for proper gelation and curing of the thermosetting resin is emphasized. The second part describes the pultrusion of thermoplastic polymer matrix with the same structure of the first one. At the end, examples of structures pultruded using cement and foams as matrix are included.

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The Role of Biomedical Engineers in the Design and Manufacture of Customized Orthodontic Appliances

Brantley

Eliades

2012

Integrated Clinical Orthodontics

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Fabrication of a new composite orthodontic archwire and validation by a bridging micromechanics model

Cited by 35 publications

References 12 publications

Failure of Fiber Reinforced Composite Archwires

Failure of Fiber Reinforced Composite Archwires

Pultrusion

The Role of Biomedical Engineers in the Design and Manufacture of Customized Orthodontic Appliances

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