Effect of Fluoride Prophylactic Agents on the Surface Topography of NiTi and CuNiTi Wires

Mane, Pratap; Pawar, Renuka; Ganiger, Chanamallappa; Phaphe, Sandesh

doi:10.5005/jp-journals-10024-1138

Cited by 12 publications

(12 citation statements)

References 8 publications

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“…Our results regarding the frictional forces confirmed the SEM findings, indicating that the frequency of use of NaF mouthwash was more important than the concentration of fluoride. These findings were also in line with those of many other studies [8,[15][16][17][18][19].…”

Section: Discussionsupporting

confidence: 93%

Effects of two Fluoride Mouthwashes on Surface Topography and Frictional Resistance of Orthodontic Wires

Ehrami¹,

Omrani²,

Feizbakhsh³

2022

fid

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Objectives: We compared the effects of fluoride mouthwashes on surface topography of orthodontic wires, and static and kinetic frictional forces between stainless-steel (SS) orthodontic brackets and SS and nickel-titanium (NiTi) archwires. Materials and Methods: This in vitro, experimental study evaluated 240 standard SS maxillary central incisor brackets and 0.018-, and 0.025×0.019-inch NiTi and SS archwires. Different combinations of wire diameters and wire types were exposed to artificial saliva (control), 0.05% sodium-fluoride (NaF) for 1 minute daily, or 0.2% NaF for 1 minute weekly (37°C) for 3 months. The wires were pulled in the bracket slots by 5mm in a universal testing machine (10mm/minute). The static and kinetic forces were measured. The surface topography of the wires was inspected under a scanning electron microscope (SEM). Three-way ANOVA followed by Bonferroni post-hoc tests were used for statistical analysis (P<0.05). Results: The mean static and kinetic frictional forces of 0.025×0.019- inch NiTi wired in the 0.05%NaF group were significantly greater than the SS wire. The mean kinetic frictional force in the 0.05%NaF group was significantly greater than the 0.2%NaF and artificial saliva groups for all wires. The mean static and kinetic forces in 0.2%NaF were significantly greater than in artificial saliva. In all groups, larger wires showed higher mean frictional forces. SEM results revealed higher wire surface roughness in the 0.05%NaF group followed by the 0.2%NaF group. Conclusion: Weekly use of 0.2%NaF mouthwash is recommended during sliding mechanics to minimize frictional forces between SS and NiTi wires and SS brackets.

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Section: Discussionsupporting

confidence: 93%

Effects of two Fluoride Mouthwashes on Surface Topography and Frictional Resistance of Orthodontic Wires

Ehrami¹,

Omrani²,

Feizbakhsh³

2022

fid

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“…This acid eventually leads to corrosion of the metallic components of orthodontic therapy such as archwires and brackets owing to dissolution of the oxide layer. [7][8][9] Hence; this current study was carried out to assess the impact on the mechanical properties of orthodontic wires such as the NiTi and CuNiTi wires by fluoride available in various prophylactic products.…”

Section: Discussionmentioning

confidence: 99%

Assessment of impact of fluoride on mechanical properties of NiTi and Cu NiTi orthodontic archwires

Dongre

Merani

Khan

et al. 2022

ijhs

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Background: The current study was carried out to assess the impact on the mechanical properties of orthodontic wires such as the NiTi and CuNiTi wires by fluoride available in various prophylactic products. Materials & methods: 80 wire specimens were selected and were divided into two study groups with 20 specimens in each group as follows”: Group A: 0.019 x 0.025 inch NiTi archwires (NT3, American Orthodontics,USA), Group B: 0.019 x 0.025 inch CuNiTi archwires (Tritanium, American Orthodontics,USA). Following fluoride agent was taken as standard for the present study: Phos-Flur gel (Colgate oral pharmaceuticals, New York, USA). From the straight part of the archwire enrolled in the present study, wire specimens of dimensions 0.40 X 0.60 X 20 mm were cut. Control group: 40 specimens consisting of 20 specimens from each wire type; Solution used was deionized water, and Study group: 40 specimens consisting of 20 specimens from each wire group, placed in the Phos-Flur gel. Random selection of the wires was done followed by testing under universal force testing machine. Results: Among the study groups subjects, mean loading force among group A and group B specimens was 596.1 MPa and 368.4 MPa respectively.

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“…Corrosion of titanium-based archwires [2][3][4][5][6][7][8][9] has been reported due to application of topical fluorides, which suggests that mechanical properties of titanium-based alloys may be altered due to fluoride application, mainly because of hydrogen embrittlement. This further may reduce the clinical efficiency, by increasing the resistance during tooth movement, which can lead to anchorage loss during leveling and aligning, and also during retraction phase.…”

Section: Discussionmentioning

confidence: 99%

Effect of fluoride on mechanical properties of NiTi and CuNiTi orthodontic archwires: an in vitro study

Mane

Ganiger

Pawar

et al. 2021

Dental Press J. Orthod.

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Introduction: After debonding, white spot may appear on the area below the bracket, which is the early clinical sign of carious lesion. There is increased caries risk underneath and adjacent to orthodontic bands and brackets, which call for maximum use of caries preventive procedures using various fluoride application methods. Objective: The aim of the study was to evaluate alterations in the mechanical properties (modulus of elasticity and yield strength) in loading and unloading phases for different orthodontic archwires (nickel-titanium [NiTi] and copper-nickel-titanium [CuNiTi]) when exposed routinely to fluoride prophylactic agents for a predetermined period of time. Methods: Preformed rectangular NiTi and CuNiTi wires were immersed in fluoride solution and artificial saliva (control) for 90 minutes at 37ºC. After immersion, specimens were tested using a 3-point bend test on a universal testing machine. Results: There is a significant reduction in the unloading yield strength when the NiTi and CuNiTi wires were exposed to APF gel. Conclusion: The result suggests that use of topical fluoride agents affect the mechanical properties of the wires, leading to increase in treatment duration. Fluoride prophylactic agents must be used with caution in patients undergoing orthodontic treatment. Injudicious use of these agents may cause corrosive effects on the orthodontic wire surfaces, with alteration in their mechanical properties.

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Effect of Fluoride Prophylactic Agents on the Surface Topography of NiTi and CuNiTi Wires

Cited by 12 publications

References 8 publications

Effects of two Fluoride Mouthwashes on Surface Topography and Frictional Resistance of Orthodontic Wires

Effects of two Fluoride Mouthwashes on Surface Topography and Frictional Resistance of Orthodontic Wires

Assessment of impact of fluoride on mechanical properties of NiTi and Cu NiTi orthodontic archwires

Effect of fluoride on mechanical properties of NiTi and CuNiTi orthodontic archwires: an in vitro study

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