Influence of epoxy, polytetrafluoroethylene (PTFE) and rhodium surface coatings on surface roughness, nano-mechanical properties and biofilm adhesion of nickel titanium (Ni-Ti) archwires

Asiry, Moshabab A; Alshahrani, Ibrahim; Almoammar, Salem; Durgesh, Bangalore H.; Kheraif, Abdulaziz A. Al; Hashem, Mohamed

doi:10.1088/2053-1591/aaabe5

Cited by 19 publications

(18 citation statements)

References 24 publications

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“…Additionally, two wires with aesthetic coating were evaluated: FLI®, a copper-nickel-titanium wire coated with PTFE, and rhodium-coated Fantasia® wires. On evaluating the cytotoxicity of rhodium-coated wires (Fantasia®), there were no induced changes in the viability of fibroblasts, as reported earlier [ 22 ].…”

Section: Discussionsupporting

confidence: 68%

“…In Fantasia® wires, nonparallel lines, cracks, and wells were observed after use in the mouth. Asiry et al [ 22 ] compared epoxy, PTFE, and rhodium coatings and found that epoxy-coated wires had the highest surface roughness values followed by PTFE wires. Rhodium-coated wires were the best-coated wires in terms of surface roughness, comparable to those of uncoated wires.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of Cell Viability and Chemical Composition of Six Latest Generation Orthodontic Wires

Escobar

Rivera

Arbelaez

et al. 2021

International Journal of Biomaterials

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Orthodontic wires are made of alloys containing different metals, including nickel. It is important to evaluate their biocompatibility prior to use, owing to their long-term use in patients. This in vitro study compared the cytotoxicity and chemical composition of six latest orthodontic wires: Fantasia®, Tanzo®, FLI®, NT3®, DuoForce®, and Gummetal®. The before-use group consisted of wires that were not used in the mouth, and the after-use group consisted of wires that were used in the mouth for two months. The wires were placed in contact with human gingival fibroblasts (HGF) for 72 h, and cytotoxicity was determined using the resazurin test. The chemical composition and surface characterisation were evaluated by spectrometry and scanning electron microscopy. The groups were compared using ANOVA and Kruskal–Wallis test. Only the FLI® wires produced a 36% reduction in HGF viability ( p < 0.05 ) and presented greater irregularities and loss of polymer structure. After-use wires showed a significant reduction in the percentage of nickel and the appearance of new elements (oxygen and carbon). Therefore, it can be concluded that no toxic ion release was noticed in this study. Rhodium-coated wires were more stable than PTFE-coated wires, and only the FLI® wires showed a slight cytotoxic effect.

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Comparison of Cell Viability and Chemical Composition of Six Latest Generation Orthodontic Wires

Escobar

Rivera

Arbelaez

et al. 2021

International Journal of Biomaterials

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“…The results obtained in this study differed from those reported by other authors. 14,30,31 It is worth mentioning that these referenced studies used different conditions for the bacterial adhesion studies and different brands of wire. Also, none of them evaluated both 0% and 3% sucrose conditions, making direct comparisons difficult.…”

Section: Discussionmentioning

confidence: 99%

In vitro Streptococcus mutans adhesion and biofilm formation on different esthetic orthodontic archwires

Oliveira¹,

Thomson²,

Alhabeil³

et al. 2021

The Angle Orthodontist

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Objectives To evaluate the ability of different esthetic archwires to retain oral biofilms in vitro. Materials and Methods Seven different brands of coated orthodontic archwires were tested: two epoxy coated, two polytetrafluoroethylene coated, two rhodium coated, and one silver plus polymer coated. Conventional uncoated metallic archwires were used as controls. Streptococus mutans adherence to archwires was quantified by colony count following 24 hours of biolfilm growth, and total wire-associated biofilm was measured using a crystal violet staining assay. For both tests, two conditions were used: 0% sucrose and 3% sucrose. For statistical analysis, P < .05 was considered as statistically significant. Results For S. mutans colony forming units per biofilm, there were no statistically significant differences among the various archwires (P = .795 for 0% sucrose; P = .905 for 3% sucrose). Regarding total biofilm formed on archwires in the 3% sucrose condition, there were statistically significant differences in crystal violet staining only for the comparison between Niti Micro Dental White and Copper Ni-Ti wires (P < .05). Conclusions The clinical use of esthetic-coated orthodontic wires may be considered to have similar risks as uncoated archwires for biofilm retention.

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“…Significant damage was noted on the surface of silver-polymer archwires, while SS and rhodium-coated (RC) archwires only showed slight depression on their surface, which was more severe in SS archwires [8]. In 2018, Asiry et al [9] reported that the surface roughness of RC archwires was not significantly different than that of nickel-titanium (NiTi) archwires but epoxy resin caused the greatest change in surface roughness compared to rhodium and NiTi.…”

Section: Introductionmentioning

confidence: 99%

Effect of 0.05% Sodium Fluoride Mouthwash on Surface Roughness and Friction Between Ceramic Brackets and Rhodium-Coated and Uncoated Stainless Steel Wires

Nik¹,

Ghadirian²,

Hooshmand³

et al. 2019

fid

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Objectives:This study aimed to assess the effect of 0.05% sodium fluoride (NaF) mouthwash on the surface roughness and friction between ceramic brackets and rhodium-coated (RC) and uncoated stainless steel (SS) wires.Materials and Methods:This experimental study was performed on 48 maxillary premolar ceramic brackets. Twenty-four pieces of RC-SS wires were used. Samples were divided into four groups. Groups 1 and 2 were immersed in artificial saliva, and groups 3 and 4 were immersed in a solution consisting of artificial saliva (9%) and mouthwash (91%). To assess surface roughness, images were obtained from the surface of wires and brackets with atomic force microscopy (AFM) and scanning electron microscopy (SEM) before and after the intervention. To assess friction, the wires were ligated into brackets, and friction was measured at a crosshead speed of 0.5 mm/minute using a universal testing machine. Data were analyzed using one-way analysis of variance (ANOVA) at the 0.05 significance level.Results:Friction during sliding in RC wires was significantly less than that in SS wires (P<0.05). Increase in the friction in SS wires by mouthwash was significantly greater compared to RC wires (P<0.05). Surface roughness coefficients of the wires before the intervention were not significantly different. The surface roughness of the wires significantly increased after the intervention and it was greater in SS wires than in RC wires (P<0.05).Conclusion:Considering the lower friction and surface roughness of SS-RC wires compared to SS wires, SS-RC wires may be a better alternative for use with ceramic brackets.

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Influence of epoxy, polytetrafluoroethylene (PTFE) and rhodium surface coatings on surface roughness, nano-mechanical properties and biofilm adhesion of nickel titanium (Ni-Ti) archwires

Cited by 19 publications

References 24 publications

Comparison of Cell Viability and Chemical Composition of Six Latest Generation Orthodontic Wires

Comparison of Cell Viability and Chemical Composition of Six Latest Generation Orthodontic Wires

In vitro Streptococcus mutans adhesion and biofilm formation on different esthetic orthodontic archwires

Effect of 0.05% Sodium Fluoride Mouthwash on Surface Roughness and Friction Between Ceramic Brackets and Rhodium-Coated and Uncoated Stainless Steel Wires

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