Reliability performance of titanium sputter coated Ni–Ti arch wires: Mechanical performance and nickel release evaluation

Anuradha, P.; Varma, N K Sapna; Balakrishnan, Avinash

doi:10.3233/bme-151550

Cited by 8 publications

(13 citation statements)

References 20 publications

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“…Glass cover slips were coated with Ti using a Ti target (99.995% purity [4N], from Kurt J. Lesker Company) in an RF diode sputtering system (Leybold Z400, Leybold). Ti sputtering creates a very smooth layer of Ti coating (Anuradha et al 2015), enabling us to perform live-cell imaging of cells adhering to and spreading on Ti. This novel method can be used in detailed, high-resolution studies of cell adherence to Ti.…”

Section: Methodsmentioning

confidence: 99%

Histatin 1 Enhances Cell Adhesion to Titanium in an Implant Integration Model

et al. 2017

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Cellular adhesion is essential for successful integration of dental implants. Rapid soft tissue integration is important to create a seal around the implant and prevent infections, which commonly cause implant failure and can result in bone loss. In addition, soft tissue management is important to obtain good dental aesthetics. We previously demonstrated that the salivary peptide histatin 1 (Hst1) causes a more than 2-fold increase in the ability of human adherent cells to attach and spread on a glass surface. Cells treated with Hst1 attached more rapidly and firmly to the substrate and to each other. In the current study, we examine the potential application of Hst1 for promotion of dental implant integration. Our results show that Hst1 enhances the attachment and spreading of soft tissue cell types (oral epithelial cells and fibroblasts) to titanium (Ti) and hydroxyapatite (HAP), biomaterials that have found wide applications as implant material in dentistry and orthopedics. For improved visualization of cell adhesion to Ti, we developed a novel technique that uses sputtering to deposit a thin, transparent layer of Ti onto glass slides. This approach allows detailed, high-resolution analysis of cell adherence to Ti in real time. Furthermore, our results suggest that Hst1 has no negative effects on cell survival. Given its natural occurrence in the oral cavity, Hst1 could be an attractive agent for clinical application. Importantly, even though Hst1 is specific for saliva of humans and higher primates, it stimulated the attachment and spreading of canine cells, paving the way for preclinical studies in canine models.

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Section: Methodsmentioning

confidence: 99%

Histatin 1 Enhances Cell Adhesion to Titanium in an Implant Integration Model

et al. 2017

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“…Concerning biocompatibility, nickel is carcinogenic, mutagenic, and cytotoxic. According to Anuradha et al .,[3] titanium sputter coated nickel titanium (NiTi) archwires seem to be promising for nickel sensitive patients. It showed a reduced surface roughness, friction coefficient, good adhesion and minimal hardness, and elastic modulus variations in artificial saliva over a given time period.…”

Section: Introductionmentioning

confidence: 99%

Assessment of bracket surface morphology and dimensional change

2017

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Objective:The objective of this study was to compare the surface morphology and dimensional stability of the bracket slot at the onset of treatment and after 12 months of intraoral exposure. The study also compared the amount of calcium at the bracket base which indicates enamel loss among the three orthodontic brackets following debonding after 12 months of intraoral exposure.Materials and Methods:The sample consisted of 60 (0.022” MBT) canine brackets. They were divided into three groups: self-ligating, ceramic bracket with metal slot, and stainless steel (SS) brackets. The slot dimensions, micromorphologic characteristics of as-received and retrieved brackets were measured with a stereomicroscope and scanning electron microscope (SEM), respectively. The amount of calcium at the bracket base which indicates enamel damage was quantified using energy-dispersive X-ray spectrometry (EDX).Results:The results showed statistically significant alterations (P < 0.05) in the right vertical dimension, internal tie wing width (cervical), right and left depth of the slot (Kruskal–Wallis test). Multiple comparison using Mann–Whitney test showed that ceramic brackets underwent (P < 0.05) minimal alterations in the right vertical dimension, internal tie wing width (cervical), right and left depth of the slot (0.01 mm, −0.003 mm, 0.006 mm, −0.002 mm, respectively) when compared with the changes seen in SS and self-ligating brackets. SEM analysis revealed an increase in the surface roughness of ceramic with metal slot brackets and self-ligating bracket showed the least irregularity. The presence of calcium was noted on all evaluated brackets under EDX, but ceramic with metal slot brackets showed a significantly greater amount of enamel loss (P = 0.001).Conclusion:Ceramic brackets were found to be dimensionally stable when compared to SS and self-ligating. Self-ligating bracket showed minimal surface irregularity. Ceramic with metal slot brackets showed a greater amount of enamel loss following debonding.

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“…The thickness of the coating is an essential factor, which is closely related to the expression of torque. The thickness of the coating achieved by the PVD is thinner than that by electroplating and electroless plating [22,23,24]. Anuradha P [23] et al reported a uniform, dense titanium coating layer, which was observed by magnetron sputtering, where the thickness varied from3-5 µm.…”

Section: Discussionmentioning

confidence: 99%

“…The thickness of the coating achieved by the PVD is thinner than that by electroplating and electroless plating [22,23,24]. Anuradha P [23] et al reported a uniform, dense titanium coating layer, which was observed by magnetron sputtering, where the thickness varied from3-5 µm. Woowa [22] aesthetic archwire has a compound double-layered coating structure with a silver and platinum coating inside and a special polymer coating outside where the thickness is 10 µm.…”

Section: Discussionmentioning

confidence: 99%

Study of Al-SiO2 aesthetic composite coating on the orthodontic metal arch wire

Yang¹,

Zheng²,

Yan³

et al. 2020

Preprint

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Nickel-titanium orthodontic wires (NTWs) play enssential roles in orthodontic treatment. However, the corrosion and unaesthetic characteristics limit their applications. To increase to aesthetic effffects of nickel-titanium orthodontic wires, we prepared aluminum-silicon dioxide (Al-SiO2) as biocompatible layer coated onto nickel-titanium orthodontic wires. Al-SiO2 coating were fifirstly fabricated by using physical vapor deposition magnetron sputtering. Physicochemical properties and biocompatibility were investigated. Al-SiO2 layer were well coated onto NTWs. A reduced corrosion current density and friction coeffiffifficient were observed in Al-SiO2 coated NTWs. Additionally, favorable biocompatibility was found in Al-SiO2 coated NTWs, indicating Al-SiO2, prepared as novel aesthetic layer, could enhance NTWs Physicochemical properties without cytotoxicity, and had great potential for NTWs surface modifification.

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Reliability performance of titanium sputter coated Ni–Ti arch wires: Mechanical performance and nickel release evaluation

Cited by 8 publications

References 20 publications

Histatin 1 Enhances Cell Adhesion to Titanium in an Implant Integration Model

Histatin 1 Enhances Cell Adhesion to Titanium in an Implant Integration Model

Assessment of bracket surface morphology and dimensional change

Study of Al-SiO2 aesthetic composite coating on the orthodontic metal arch wire

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