In vitro evaluation of frictional forces of two ceramic orthodontic brackets versus a stainless steel bracket in combination with two types of archwires

Arash, Valiollah; Rabiee, Mohammad; Rakhshan, Vahid; Khorasani, Sara; Sobouti, Farhad

doi:10.4103/2278-0203.156028

Cited by 19 publications

(17 citation statements)

References 36 publications

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“…In the present study, we observed that in sliding mechanics, the ceramic bracket presented significantly higher frictional force values than the metal and self-ligating brackets, corroborating the findings in the studies [19][20][21] . One of the causes of high frictional force on ceramic brackets may be due to the scratches found on these brackets, which make sliding difficult, thus increasing the time of orthodontic treatment 22 .…”

Section: Discussionsupporting

confidence: 92%

Evaluation of friction in metal, ceramic and self-ligating brackets submitted to sliding mechanics

Mascarelo

Godoi

Furletti

et al. 2018

Rev. odontol. UNESP

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Objective With the purpose of evaluating the best results for a proposed orthodontic treatment, the aim of this research was to verify the frictional force between archwires and orthodontic brackets in sliding mechanics. Material and method Three different types of brackets were used: conventional metal, self-ligating metal and conventional polycrystalline esthetic type (n=10), totaling 30 brackets and .019 x .025 inches stainless steel rectangular wire. An acrylic plate was used. The wire was fixed to the brackets (conventional metal and conventional polycrystalline esthetic) with esthetic elastomeric ligation. The acrylic plate together with the 019 x 0.025 inches wire fitted to it was attached to the base plate of the Instron 4411 universal test machine so that it was positioned perpendicular to the ground. The bracket was drawn through the archwire segment at a speed of 5 mm / minute for a distance of 5 mm. For each type of bracket, ten tests were performed, with the bracket and archwire set being changed for each repetition. Data were analyzed by one-way Analysis of Variance (p <0.0001) and the Tukey Test (p <0.05). Result Convencional metal and self-ligating brackets presented similar friction (p>0.05), while ceramic bracket presented higher frictional resistance during sliding test (p<0.05). Conclusion It was concluded that the type of bracket influenced the frictional force value obtained, and better results were found when the metal and self-ligating brackets were used. The ceramic bracket presented a higher frictional force value.

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Section: Discussionsupporting

confidence: 92%

Evaluation of friction in metal, ceramic and self-ligating brackets submitted to sliding mechanics

Mascarelo

Godoi

Furletti

et al. 2018

Rev. odontol. UNESP

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“…According to the findings, the metallic orthodontic wire presented a greater frictional resistance than the esthetic wires. Previous studies 5,[15][16][17][18] have shown that esthetic brackets have reduced roughness and lower friction when compared to conventional stainless-steel brackets. In the scientific literature, the studies analyzing the frictional resistance of different brackets have reported inconsistent findings due to the different methodologies used, in particular: orthodontic wires and brackets of different manufacturers, different combinations of bracket and wire, distinct test conditions (dry or saliva/other solutions-moistened environment), and different bracket angulations.…”

Section: Discussionmentioning

confidence: 99%

“…All these factors make it difficult to compare the results between the studies. In general, the smoother surface of the ceramic brackets is believed to contribute to less resistance to friction and mechanical sliding 17,18 .…”

Section: Discussionmentioning

confidence: 99%

A comparative analysis of the frictional resistance of esthetic orthodontic wires

Pilon

Costa

Correr-Sobrinho

et al. 2019

Rev. odontol. UNESP

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Introduction The orthodontic movement is directly influenced by the ability of orthodontic wires to slide through brackets and tubes. Therefore, the main concern during orthodontic movement corresponds to the frictional forces generated at the bracket-orthodontic wire interface. Objective This study aimed to evaluate the frictional resistance of esthetic orthodontic wires. Material and method Fifty test brackets were obtained and divided into five groups (n = 10) based on the type of rectangular orthodontic wire, as follows: conventional metallic wire (Morelli, Brazil) (G1, control group) and esthetic wires (G2, Ortho Organizer; G3, Tecnident; G4, Trianeiro; and G5, TP Orthodontics). The following materials and conditions were used: 0.019 x 0.025-inch wires, ceramic brackets with edgewise prescription, torque and/or angulation of 0°, and 0.022 x 0.028-inch slots. The specimens were tested for their tensile strength using an Instron universal test machine at a speed of 1.0 mm / min and a load cell of 500N. The tensile strength data were analyzed by one-way analysis of variance (ANOVA) followed by Tukey’s post-hoc test, with a 5% significance level. Result The frictional resistance (N) of the metallic orthodontic wire (8.07 ± 0.43) was significantly higher than that of the esthetic wires: Ortho Organizer (4.01 ± 0.25), Tecnident (3.87 ± 0.31), Trianeiro (4.47 ± 0.26) and TP Orthodontics (4.49 ± 0.30) (p <0.05), with no significant difference between them (p> 0.05). Conclusion To conclude, the esthetic orthodontic wires tested herein showed less frictional resistance as compared to the conventional metallic wire.

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“…The frictional resistance present when performing orthodontic sliding mechanics results from interactions between the bracket, arch and method of ligation [1][2][3][4][5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

“…A high frictional coefficient may reduce the force used for orthodontic movement by half, diminishing the speed of tooth movement and making it difficult to control anchorage. The frictional force should be as low as possible with the goal of achieving greater mechanical efficiency; that is, the force applied must be sufficient to break the static friction and enable tooth movement 2,6,9,[10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of friction on self-ligating and conventional brackets associated with different types of archwires submitted to sliding mechanics

Barbosa¹,

Correr²,

Carneiro³

et al. 2019

Braz. J. Oral Sci.

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Aim: The aim of this study was to verify the frictional force during sliding mechanics in orthodontic tooth movement, using conventional metal brackets of the active and passive self-ligating types with stainless steel and copper nickel titanium archwires. Methods: This experimental in vitro study was conducted with conventional metal (Morelli, Sorocaba, SP, Brazil) brackets, active self-ligated (SLI Morelli, Sorocaba, SP, Brazil) and passive self-ligated (SLP Morelli, Sorocaba, SP, Brazil), with slot 0.022 x 0.028 inches and Roth prescription. The brackets were tested with rectangular section 0.019 x 0.025 inch copper nickel titanium and stainless steel archwires. For each type of bracket, 10 sets of plate/bracket/archwire segment (n=10) were fabricated. Non-parametric Kruskal Wallis and Dunn tests were used for comparison between types of brackets and Wilcoxon tests for comparison between types of archwires. Results: The results showed that the frictional force values were higher with copper nickel titanium than with stainless steel archwires (p<0.05). When copper nickel titanium archwires were used, the active self-ligating brackets showed higher frictional force values than the other types, followed by the conventional brackets. Lower frictional force values were observed with passive self-ligating brackets. For stainless steel archwires, no difference was observed between conventional and active self-ligating brackets, the passive self-ligating type presented lower frictional force values than the others. Conclusion: It was concluded that the higher frictional force was observed when active self-ligating brackets were associated with copper nickel titanium archwires. Lower frictional force was verified between passive self-ligating brackets combined with stainless steel archwires.

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In vitro evaluation of frictional forces of two ceramic orthodontic brackets versus a stainless steel bracket in combination with two types of archwires

Cited by 19 publications

References 36 publications

Evaluation of friction in metal, ceramic and self-ligating brackets submitted to sliding mechanics

Evaluation of friction in metal, ceramic and self-ligating brackets submitted to sliding mechanics

A comparative analysis of the frictional resistance of esthetic orthodontic wires

Evaluation of friction on self-ligating and conventional brackets associated with different types of archwires submitted to sliding mechanics

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