Exposure to the oral environment enhances the corrosion of metal orthodontic appliances caused by fluoride-containing products: Cytotoxicity, metal ion release, and surface roughness

Chantarawaratit, Pintu-on; Yanisarapan, Tipanan

doi:10.1016/j.ajodo.2020.03.035

Cited by 15 publications

(11 citation statements)

References 39 publications

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“…Another factor to consider is fluoride exposure. Previous studies showed that fluoride affected titanium‐containing archwires more, leading to a higher surface roughness due to a decreased corrosion resistance of the archwire, 15,24,35–37 which agrees with our findings. Also, one study found that routine fluoride application affected the mechanical properties of orthodontic archwires containing titanium, 38 which was further explained in another study as being a factor of hydrogen embrittlement of the alloy 36 .…”

Section: Discussionsupporting

confidence: 92%

“…Then, a load of 280 g in a horizontal motion, with 438 brushing strokes, corresponded to mechanical brushing for 21 days at a rate of brushing two times/day 23 . The toothpaste medium fed to the machine was a mixture of 1000 ppm NaF (Colgate®; Colgate‐Palmolive Co., Saudi Arabia) and artificial saliva at a 1:4 (w/v) ratio 24 . Following the brushing abrasion test, a friction resistance test was performed again on all the archwires using the previous protocol.…”

Section: Methodsmentioning

confidence: 99%

“…23 The toothpaste medium fed to the machine was a mixture of 1000 ppm NaF (Colgate®; Colgate-Palmolive Co., Saudi Arabia) and artificial saliva at a 1:4 (w/v) ratio. 24 Following the brushing abrasion test, a friction resistance test was performed again on all the archwires using the previous protocol.…”

Section: Brushing Testmentioning

confidence: 99%

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The effect of salbutamol sulphate inhalation (an anti‐asthmatic medication) on the surfaces of orthodontic Archwires

Alemran,

Abbassy,

Bakry

et al. 2023

Orthod Craniofacial Res

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ObjectivesThis study aimed to compare the surface roughness and friction of different orthodontic archwires after exposure to salbutamol sulphate inhalation, an anti‐asthmatic medication.MethodsOrthodontic archwires (stainless‐steel [StSt], nickel‐titanium [NiTi], beta‐titanium [β‐Ti], and copper‐NiTi [Cu‐NiTi]) were equally divided into two groups. The exposed groups were subjected to 20 mg salbutamol sulphate for 21 days and kept in artificial saliva. The control groups were only kept in artificial saliva. Surface changes were visualized using scanning electron microscopy (SEM). The average surface roughness (Ra) was evaluated using atomic force microscopy (AFM), and friction resistance forces were assessed using a universal testing machine. Statistical analyses were performed using t‐tests and ANOVA followed by post hoc tests.ResultsSalbutamol sulphate did not change the surface roughness of StSt and NiTi archwires (p > .05). However, the change in the surfaces of β‐Ti and Cu‐NiTi archwires was significant (p < .001). The frictional forces of exposed StSt, NiTi, and Cu‐NiTi archwires did not change (p > .05). However, the frictional forces of β‐Ti archwires increased significantly after exposure to salbutamol sulphate (p = .021). Brushing with fluoride after exposure to salbutamol sulphate increased the frictional forces of β‐Ti only (p = .002).ConclusionsSalbutamol sulphate inhalation significantly affected the surface texture of β‐Ti and Cu‐NiTi orthodontic archwires and increased the friction of β‐Ti archwires. These deteriorating effects were not detected on the surface of StSt and NiTi archwires. Therefore, we suggest that β‐Ti and copper titanium archwires should be used cautiously in individuals under salbutamol sulphate inhalation treatment.

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Section: Discussionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

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The effect of salbutamol sulphate inhalation (an anti‐asthmatic medication) on the surfaces of orthodontic Archwires

Alemran,

Abbassy,

Bakry

et al. 2023

Orthod Craniofacial Res

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“…[ 18 ] The surface roughness of orthodontic appliances plays a critical role in ion release, as exposure to the oral environment can increase corrosion and ion release. [ 19 ] Moreover, according to a study, the composition of the alloy utilized in the appliance can affect the number of metal ions released, with nickel ions being released at higher levels than other metal ions from fixed orthodontic appliances. [ 20 ] Furthermore, the study indicated that the concentration of nickel and chromium in saliva was the highest one week after appliance placement and gradually decreased over time.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the influence of metal ions released from the fixed orthodontic appliances on the static friction and surface topography of stainless steel and I archwires: An in-vitro study

Yakop,

Al Qassar,

Hamood Aljoubory

2023

J Orthodont Sci

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BACKGROUND: Static friction force between the orthodontic brackets and wire impacts the sliding mechanics that affect teeth movements and treatment duration. This sliding media is jam-packed with released metal ions from the fixed appliances. This study aimed to assess the static frictional force and surface topography of stainless steel (SS) and I archwires in dry conditions and in media fully with metal ions that were released from fixed appliances. METHODS: In this research study, a set of 60 as-received straight archwires specimens (5 cm wire) were employed and categorized into two groups based on the material type [30 super elastics new I archwires gauge (0.018 × 0.014 inch) and 30 SS archwires 0.018 × 0.022” as a control]. The archwires' static friction force was measured while sliding a loaded Roth SS brackets (0.018”) on the archwire using a universal tensile testing machine in dry and metal ions released media, while the surface topography was assessed using a noncontact AFM machine. RESULTS: The static friction of I archwire was significantly lower than the SS wire in dry condition. Metal ions media released from fixed appliances significantly reduced the Static friction compared to dry and wet conditions with deionized water for both wires. An Atomic Force Microscope machine surface roughness reports revealed that the highest mean of all three roughness parameters was found in the SS group, followed by I archwires in descending order. Additionally, metal ions media significantly reduce all roughness parameters.

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“…There are studies that show the damage of orthodontic appliances and arches due to the environment of the oral cavity [ 7 ] such as the action of fluoride in toothpaste [ 8 ] on orthodontic appliances and arches. It is known that fluoride [ 9 ] affects more the arches which contain NiTi and less the SS and CoCr [ 10 ], so we tried to expose for a longer period these type of arches that are used for longer periods of time in removable appliances and lingual or practitioner constructed arches [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Mechanical Behavior of Orthodontic Arches Exposed to the Environment in the Oral Cavity

et al. 2022

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Background. The arches used in orthodontic therapy are subject to increasing physical and chemical stresses. Purpose of the study: This in vitro experimental study aims to highlight and compare the main mechanical properties of orthodontic arches. Materials and Methods: We used 40 springs, 2 materials, 20 of Ni-Cr and 20 of Co-Cr, of different diameters, 0.7 mm 0.8 mm and 1.2 mm, subjected to the environment of artificial saliva and artificial saliva with cola for one month and two months, respectively. Five springs of each material were tested at different times: T0, before application in the oral cavity, then at time T1, T2, T3, T4. Three lengths of the lever arm were considered for bending forces acting on the springs (dental wires). These lengths were 15, 10 and 5 mm. The wires were tested under the action of bending forces on a Hans Schmidt HV 500N stand, obtaining the characteristics of the wires: deformation-force-time. Results: Graphical determinations show that the degree of deformation of the wires is influenced by the applied force, diameter and obviously by the immersion time, respectively by the type of solution in which the springs were immersed. Conclusions: The final degree of bending is higher for Co-Cr arcs than for Ni-Cr at all three dimensions.

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Exposure to the oral environment enhances the corrosion of metal orthodontic appliances caused by fluoride-containing products: Cytotoxicity, metal ion release, and surface roughness

Cited by 15 publications

References 39 publications

The effect of salbutamol sulphate inhalation (an anti‐asthmatic medication) on the surfaces of orthodontic Archwires

The effect of salbutamol sulphate inhalation (an anti‐asthmatic medication) on the surfaces of orthodontic Archwires

Assessment of the influence of metal ions released from the fixed orthodontic appliances on the static friction and surface topography of stainless steel and I archwires: An in-vitro study

Experimental Study on the Mechanical Behavior of Orthodontic Arches Exposed to the Environment in the Oral Cavity

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