Evaluation of frictional resistance in esthetic brackets

Bazakidou, Eleni; Nanda, Ram S.; Duncanson, Manville G.; Sinha, Pramod K.

doi:10.1016/s0889-5406(97)70238-5

Cited by 93 publications

(82 citation statements)

References 21 publications

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“…21,23,24 Some authors did not find any relation between roughness of the wire and the amount of friction created; 14 however, other studies show different results. 1,25,26 The composition of the slot is perhaps the most important factor, since the coefficient of friction, which is specific for each pair of materials, depends on it. 6 The present study shows results similar to those of other investigators, who point to SS brackets as the ones producing the lowest frictional forces.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets

et al. 2010

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The aim of this study was to evaluate, in vitro, frictional forces produced by ceramic brackets and arch wires of different alloys. Frictional tests were performed on three ceramic brackets: monocrystalline (Inspire ICE), polycrystalline (InVu), polycrystalline with metal slot (Clarity), and one stainless steel bracket (Dyna-Lock). Thirty brackets of each were tested, all with .022" slots, in combination with stainless steel and nickel-titanium wires .019" × .025", at 0° and 10° angulation, in artificial saliva. Arch wires were pulled through the slots at a crosshead speed of 10 mm/min. There were statistically significant differences between the groups of brackets and wires studied (p < .05). The polycrystalline brackets with metal slots had values similar to those of conventional polycrystalline brackets, and the monocrystalline brackets had the highest frictional forces. The nickel-titanium wires produced the lowest friction. The addition of metal slots in the polycrystalline brackets did not significantly decrease frictional values. Nickel-titanium wires produced lower friction than those of stainless steel.

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Section: Discussionmentioning

confidence: 99%

Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets

et al. 2010

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“…Metal brackets present lower friction coefficients than ceramic and plastic brackets and they are considered the golden standard to perform sliding mechanics. 17 Plastic brackets showed lower values of friction than polycrystalline ceramic brackets. 17 Others studies investigated possible static friction differences between poly and monocrystalline ceramic brackets and no significant differences were registered.…”

Section: Variables That May Influence Friction During Otmmentioning

confidence: 91%

“…17 Plastic brackets showed lower values of friction than polycrystalline ceramic brackets. 17 Others studies investigated possible static friction differences between poly and monocrystalline ceramic brackets and no significant differences were registered. 12,18 Omana et al 9 reported that scanning electronic microscopy evaluations showed no major surface roughness differences between the two types of ceramic brackets and this property could not be pointed out as the cause for different levels of friction between mono and polycrystalline ceramic brackets.…”

Section: Variables That May Influence Friction During Otmmentioning

confidence: 91%

The role of friction in orthodontics

Pacheco

Jansen

Oliveira

2012

Dental Press J. Orthod.

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“…Increased resistance to sliding (RS) between the archwire and an esthetic bracket during orthodontic tooth movement is a frequently cited barrier to consolidating these needs. 1,2 Bracket slot material and mode of ligation are two variables that have been given considerable focus in an attempt to produce a bracket with optimal clinical performance in terms of sliding mechanics. Glazed, rounded, or metal-lined bracket slots and self-ligating (SL) designs of esthetic brackets have all been recently produced in search of this goal.…”

Section: Introductionmentioning

confidence: 99%

Effect of applied moment on resistance to sliding among esthetic self-ligating brackets

Pliska

Fuchs

Beyer

et al. 2013

The Angle Orthodontist

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Objective: To determine the effect of mode of ligation and bracket material on resistance to sliding (RS) by comparing various esthetic brackets of conventionally ligated and self-ligating (SL) designs under an increasing applied moment in the second-order dimension. Materials and Methods: Eight different commercially available esthetic brackets of SL and conventional elastomeric-ligated (CL) designs were mounted on a testing apparatus to simulate canine retraction using sliding mechanics and the application of a moment on 0. . The RS at calculated moments of 2000 g-mm and 4000 g-mm was determined and compared between the various brackets. Descriptive measures and one-way analysis of variance were used to calculate means and statistical differences among the bracket types. Results: The CL monocrystalline bracket displayed significantly greater (P , .05) RS than all other brackets tested. Among the other brackets, the range of RS values was 145.8-191.7 g and 291.9-389.2 g at moments of 2000 g-mm and 4000 g-mm, respectfully, though these differences were not significant (P , .05). All brackets tested displayed greater levels of RS (P , .05) at 4000 g-mm than at 2000 g-mm.Conclusion: With the exception of the CL monocrystalline bracket, all brackets displayed comparable amounts of RS regardless of mode of ligation or bracket slot material. (Angle Orthod. 2014;84:134-139.)

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Evaluation of frictional resistance in esthetic brackets

Cited by 93 publications

References 21 publications

Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets

Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets

The role of friction in orthodontics

Effect of applied moment on resistance to sliding among esthetic self-ligating brackets

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