Comparative evaluation of Stainless-steel wires and brackets coated with nanoparticles of Chitosan or Zinc oxide upon friction: An in vitro study

Elhelbawy, Nahla Gamaleldin; Ellaithy, Mohammed

doi:10.1016/j.ortho.2021.01.009

Cited by 13 publications

(25 citation statements)

References 32 publications

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“…42 Even though the previous study found that the polyethylene coated with the chitosan nanoparticle improved friction due to its rough surface, according to the AFM analysis, the archwire with the chitosan nanoparticle coated in stainless-steel (SS) instead reduced friction, as confirmed by a sliding test carried out with a universal testing machine, and exhibited a smoother surface, according to a subjective analysis of the SEM images. 41,43 The unloading force of CuNiTi archwire decreased from weeks 2 to 4 and increased again from weeks 4 to 6, with both groups exhibiting almost the same force at Week-2. A study was discussed which examined hysteresis or force loss between nickel-titanium (NiTi) and CuNiTi when stored in water, subjected to temperature changes, and in an acidic condition for 60 days, which simulated an orthodontic treatment in the mouth.…”

Section: Discussionmentioning

confidence: 99%

Chitosan’s effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

et al. 2023

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Background: Chitosan has an antimicrobial effect in oral hygiene control. Orthodontists sometimes prescribe mouthwash to adolescent patients. Copper-nickel-titanium (CuNiTi) orthodontic archwire is widely used in orthodontic treatment. Chitosan’s effects on the CuNiTi properties of orthodontic archwire are not generally known. Purpose: This study aimed to measure the acidity, copper ion release, deflection, and surface roughness of CuNiTi orthodontic archwire immersed in artificial saliva and 2% chitosan. Methods: This study comprised experimental laboratory research. Forty-two CuNiTi orthodontic archwires were divided into three groups. Group A consisted of 18 archwires immersed in artificial saliva, Group B consisted of 18 archwires immersed in 2% chitosan, and Group C was six archwires for the baseline sample. The two intervention groups (A and B) were divided into three subgroups of six samples and were subjected to different immersion times—i.e., two, four, and six weeks. Acidity, copper ion release, deflection, and surface roughness were measured using pH meters, atomic absorption spectrophotometry (AAS), a universal testing machine (UTM), and a scanning electron microscope (SEM). Results: The results showed that Group A was more alkaline than Group B, and it was significantly different only in Week 2. Group B’s copper ion release was significantly lower than Group A for all the time observations (p<0.05), and the deflection analysis showed no significant difference in any of the groups (p>0.05). Furthermore, the SEM images showed CuNiTi in Group A at Week-6 had the most porosities and defects. Conclusion: The chitosan produces buffer effects on the pH; it also exhibits lower copper ion release, no differences in unloading forces, and subjectively has better surface roughness.

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Section: Discussionmentioning

confidence: 99%

Chitosan’s effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

et al. 2023

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“…In some studies, the antimicrobial effect of different nanoparticles along with the effects on friction is measured simultaneously. [34,39,40] In some studies, nanoparticles are coated on the orthodontic archwire, [15,17] or the wire and the bracket are both coated together. [9,15] Other studies, in addition to friction, measured and investigated mechanical properties of nanoparticles including surface roughness, conductivity, kerogen, and effects on shear strength given that the type of nanoparticles will also be different in each study.…”

Section: Discussionmentioning

confidence: 99%

“…[34,39,40] In some studies, nanoparticles are coated on the orthodontic archwire, [15,17] or the wire and the bracket are both coated together. [9,15] Other studies, in addition to friction, measured and investigated mechanical properties of nanoparticles including surface roughness, conductivity, kerogen, and effects on shear strength given that the type of nanoparticles will also be different in each study. [22,23,35,[41][42][43] To measure friction, eight types of archwires in two types of SS and Niti were used at the cross-sections of 012 inches, 016 inches, 016 × 022 square inches, and 019 × 025 square inches.…”

Section: Discussionmentioning

confidence: 99%

“…[9,14] When such an angle reaches the threshold, contact is made between the wire and the edge of the bracket, resulting in adhesion between the metal surfaces, and then, the wire gradually bends with the permanent deformation. [15] All phenomena, in turn, prevent the tooth from moving continuously, leading to the intermittent cessation of tooth movement. To resolve such a problem, the applied force should be increased to 40-60% of the initial force.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the effects of orthodontic brackets coated by silver hydroxyapatite, copper oxide, and titanium oxide nanoparticles on wire-bracket friction

Ameli

Ghorbani

Asadi

et al. 2022

APOS

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Objectives: Coating orthodontic brackets with metal nanoparticles seem to affect surface roughness and friction. We aim to compare the effects of coating brackets with copper oxide (CuO), titanium dioxide (TiO2), and silver hydroxyapatite (S-HAP) on friction between brackets and various sizes and materials of orthodontic wires. Material and Methods: In this experimental study, we selected four groups of stainless steel (SS) brackets with eight orthodontic wires (SS and nickel-titanium [Niti]) in different sizes. Three groups were coated with CuO, TiO2, and S-HAP nanoparticles using dip coating. Then, we attached a 100 g weight to the wires and hung it from the universal testing machine. The wire passed through the brackets at a speed of 0.5 mm/min for 25 s. Finally, the friction between wires and brackets was compared using a two-way analysis of variance. Results: The results showed that friction of brackets coated with TiO2 was significantly lower than S-HAP (P = 0.021) and did not differ significantly between CuO and the control (P = 1). Furthermore, friction between CuO brackets was not significantly different from other groups (P > 0.05). Niti round wires had significantly lower friction with all brackets compared to 0.16 × 0.22 square inch Niti wire (p< 0.05), which, in turn, showed significantly lower friction compared to 0.16 × 0.22 square inch stainless steel (SS) wire (P = 0.008). Conclusion: Coating brackets with TiO2 and CuO nanoparticles can reduce the friction Moreover, Niti round wires show the least friction compared to rectangular or SS wires with all types of brackets.

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“…It has been reported that when both orthodontic wires and brackets were coated with ZnO NPs the antibacterial potential against S. mutans was enhanced and reduced the frictional forces of coated wires ( Behroozian et al, 2016 ). Similarly the stainless steel wires and orthodontic brackets coated with chitosan NPs or ZnO NPs reduced the friction between orthodontic brackets and a Stainless steel wire thus enhances the anchorage control and root resorption risk ( Elhelbawy and Ellaithy 2021 ). Europium ions doped ZnO NPs were incorporated has orthodontic nanoadhesive enhanced the visibility of material for thorough removal of orthodontic adhesive after completion of treatment ( Yamagata et al, 2012 ).…”

Section: Applications Of Zinc Oxide Nanoparticles In Dentistrymentioning

confidence: 99%

Zinc Oxide Nanoparticles: A Review on Its Applications in Dentistry

Pushpalatha

Suresh

Gayathri

et al. 2022

Front. Bioeng. Biotechnol.

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Nanotechnology in modern material science is a research hot spot due to its ability to provide novel applications in the field of dentistry. Zinc Oxide Nanoparticles (ZnO NPs) are metal oxide nanoparticles that open new opportunities for biomedical applications that range from diagnosis to treatment. The domains of these nanoparticles are wide and diverse and include the effects brought about due to the anti-microbial, regenerative, and mechanical properties. The applications include enhancing the anti-bacterial properties of existing restorative materials, as an anti-sensitivity agent in toothpastes, as an anti-microbial and anti-fungal agent against pathogenic oral microflora, as a dental implant coating, to improve the anti-fungal effect of denture bases in rehabilitative dentistry, remineralizing cervical dentinal lesions, increasing the stability of local drug delivery agents and other applications.

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Comparative evaluation of Stainless-steel wires and brackets coated with nanoparticles of Chitosan or Zinc oxide upon friction: An in vitro study

Cited by 13 publications

References 32 publications

Chitosan’s effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

Chitosan’s effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

Investigation of the effects of orthodontic brackets coated by silver hydroxyapatite, copper oxide, and titanium oxide nanoparticles on wire-bracket friction

Zinc Oxide Nanoparticles: A Review on Its Applications in Dentistry

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