Effect of Fluoride Released from Fluoride-containing Dental Restoratives on NiTi Orthodontic Wires

Kwon, Yong Hoon; Jang, Chang-Min; Jang, Jaehyeok; Park, Joohee; Kim, Tae Hyong; Kim, Hyung-Il

doi:10.4012/dmj.27.133

Cited by 12 publications

(7 citation statements)

References 19 publications

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“…[29][30] These results are in agreement with other studies. [30][31] These studies reported significant differences in surface characteristics between control and other tested groups of the different metal archwires and brackets in different electrolyte solutions.…”

Section: Discussionmentioning

confidence: 98%

Evaluation of the effect of different beverages on the mechanical properties of orthodontic arch wires

Hafez

2017

Egyptian Orthodontic Journal

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Purpose: This study was conducted to evaluate the effect of different beverages on surface microhardness, modulus of elasticity and flexural strength of orthodontic archwires. Materials and Methods: Four orthodontic archwires (stainless steel, NiTi, copper NiTi and Teflon-coated NiTi) were used. They were immersed in three different solutions (Artificial saliva, tea and Coca Cola) for four weeks. For mechanical properties assessment, the specimens were classified mainly into four groups (90 specimens each) according to the archwire type. Each group was further subdivided into 3 subgroups (30 specimens each) according to the used solution. Each subgroup had been divided into three divisions (10 specimens each) according to the test parameter (surface microhardness, modulus of elasticity, flexural strength). Surface microhardness was evaluated using Vickers hardness tester. While modulus of elasticity and flexural strength were measured by subjecting the archwires specimens to the three point bending test using a universal testing machine. Means and standard deviations were calculated for all tests. The data was analyzed and compared using two-way ANOVA analysis and Least Significant Difference (LSD) test (p < 0.05). Results: Artificial saliva significantly decreased the surface microhardness of St. St. and Teflon-coated NiTi archwires and significantly decreased the modulus of elasticity of NiTi, CuNiTi, St. St. archwires. Tea and Coca Cola significantly decreased the surface microhardness of CuNiTi, St. St. and Teflon-coated NiTi archwires and significantly decreased the modulus of elasticity of all archwire specimens. Two-way ANOVA results revealed significant difference among the tested groups (p < 0.001). Conclusions: Tea and Coca Cola potentially would contribute to the change in the mechanical properties of orthodontic archwires leading to prolonged orthodontic treatment.

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Section: Discussionmentioning

confidence: 98%

Evaluation of the effect of different beverages on the mechanical properties of orthodontic arch wires

Hafez

2017

Egyptian Orthodontic Journal

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“…Thus, the current study aimed at exploring the effects of APF agent that was applied in vitro and in situ [151617] on a Ni-Ti orthodontic wire and comparing them to the conventionally used stainless steel orthodontic wire. All the tested wires used in this study were rectangular wires because these types of wires offer control in all the three planes which facilitated their testing procedures.…”

Section: Discussionmentioning

confidence: 99%

Fluoride influences nickel-titanium orthodontic wires′ surface texture and friction resistance

Abbassy¹

2016

J Orthodont Sci

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Objectives:The aim of this study was to investigate the effects exerted by the acidulated fluoride gel on stainless steel and nickel-titanium (Ni-Ti) orthodontic wires.Materials and Methods:Sixty stainless steel and Ni-Ti orthodontic archwires were distributed into forty archwires used for in vitro study and twenty for in situ study. Fluoride was applied for 1 h in the in vitro experiment while it was applied for 5 min in the in situ experiment. The friction resistance of all wires with ceramic brackets before/after topical fluoride application was measured using a universal testing machine at 1 min intervals of moving wire. Moreover, surface properties of the tested wires before/after fluoride application and before/after friction test were examined by a scanning electron microscope (SEM). Dunnett's t-test was used to compare frictional resistance of as-received stainless steel wires and Ni-Ti wires to the wires treated by fluoride in vitro and in situ (P < 0.05). Two-way ANOVA was used to compare the effect of fluoride application and type of wire on friction resistance in vitro and in situ (P < 0.05).Results:Ni-Ti wires recorded significantly high friction resistance after fluoride application when compared to stainless steel wires in vitro, P < 0.05. Fluoride application did not significantly affect the friction resistance of the tested wires in situ, P < 0.05. SEM observation revealed deterioration of the surface texture of the Ni-Ti wires after fluoride application in vitro and in situ.Conclusions:The in vitro fluoride application caused an increase in friction resistance of Ni-Ti wires when compared to stainless steel wires. In vitro and in situ fluoride application caused deterioration in surface properties of Ni-Ti wires.

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“…It has been reported that few ten ppm F ions is not enough to corrode the Ni-Ti and Ni-Ti-Cu wires in acidic artificial saliva for 10-day immersion [31]. In this study, the presence of 0.2% NaF (F ions = 950 ppm) in artificial saliva increased the corrosion rates (about 1.5-4 times) and anodic currents at 0 V (about 7.5-27 times) of the test Ti-containing wires, as compared to those obtained in fluoride-free artificial saliva (Table 3).…”

Section: Cyclic Potentiodynamic Polarization Curvementioning

confidence: 99%

Corrosion resistance of titanium-containing dental orthodontic wires in fluoride-containing artificial saliva

Lee

Wang

Huang

et al. 2009

Journal of Alloys and Compounds

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Effect of Fluoride Released from Fluoride-containing Dental Restoratives on NiTi Orthodontic Wires

Cited by 12 publications

References 19 publications

Evaluation of the effect of different beverages on the mechanical properties of orthodontic arch wires

Evaluation of the effect of different beverages on the mechanical properties of orthodontic arch wires

Fluoride influences nickel-titanium orthodontic wires′ surface texture and friction resistance

Corrosion resistance of titanium-containing dental orthodontic wires in fluoride-containing artificial saliva

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