Evaluation of the surface characteristics of anodic oxidized miniscrews and their impact on biomechanical stability: An experimental study in beagle dogs

Choi, Sung‐Hwan; Jang, Sung Ho; Yul, Jung; Hwang, Chung Ju

doi:10.1016/j.ajodo.2015.06.020

Cited by 21 publications

(27 citation statements)

References 38 publications

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“…It is used because titanium dioxide exhibits high biocompatibility and excellent corrosion resistance, and can also achieve osseointegration, defined as a structurally and functionally direct connection between the surrounding bone and implant surfaces without fibrous tissue formation 1, 2 . To date, to increase the clinical success rate for high-risk patients with bone that has been compromised by aging or diseases such as diabetes, various surface modifications have been developed, combining micro- and nanoscale features to mimic the characteristics of natural bone 3–5 .…”

Section: Introductionmentioning

confidence: 99%

Overcoming the biological aging of titanium using a wet storage method after ultraviolet treatment

Choi

Jeong

Yul

et al. 2017

Sci Rep

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We evaluated whether the biological activity of the surface of titanium, when stored in an aqueous solution after ultraviolet (UV) treatment, is comparable to that of the surface immediately after UV treatment. We subjected Grade IV titanium discs with machined surfaces to UV radiation for 15 min and then tested them immediately and after storage for 28 days, with and without distilled H 2 O (dH 2 O). We evaluated the surface characteristics using surface profiling, contact angle analysis, X-ray photoelectron spectroscopy, and in terms of the surface zeta-potential. We determined the level of biological activity by analysing albumin adsorption, MC3T3-E1 and human mesenchymal cell adhesion and cytoskeleton development, as well as the production of intracellular reactive oxygen species between groups. The surface characteristics produced by the UV irradiation were maintained in dH 2 O for 28 days. We found that titanium stored in dH 2 O for 28 days after UV treatment exhibited enhanced protein adsorption, cell attachment, and cytoskeleton development. Titanium stored in dH 2 O for 28 days after UV irradiation exhibited a lower level of oxidative stress, comparable to that of the titanium immediately after UV treatment. UV treatment combined with wet storage can be used as a means of overcoming the biological aging of titanium.

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Section: Introductionmentioning

confidence: 99%

Overcoming the biological aging of titanium using a wet storage method after ultraviolet treatment

Choi

Jeong

Yul

et al. 2017

Sci Rep

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“…Anodic oxidation treatment may be an effective tool in reducing insertion damage to surrounding tissue and improving the mechanical stability of miniscrews [4] by increasing boneimplant contact [8]. Previous studies analyzing the response of cells to TiO2 made use of different specific anodization processes [6,13,14], processes which yield very different surface treatments that are likely not comparable to those investigated here.…”

Section: Discussionmentioning

confidence: 91%

“…Notably, the greater the applied current voltage, the thicker and more rough the TiO 2 layer will be [7]. This TiO 2 layer increases surface roughness, so that anodic oxidation has been reported to yield titanium surfaces with similar roughness behavior to that of machine treated implants [8].…”

Section: Introductionmentioning

confidence: 99%

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Biological Effects of Anodic Oxidation on Titanium Miniscrews: An In Vitro Study on Human Cells

Iodice¹,

Perinetti

Ludwig³

et al. 2019

Dentistry Journal

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This controlled in vitro study compared the effects of varying the thickness of a TiO2 layer on cellular activity using commercially available miniscrew samples with identical surface features to derive information with direct clinical impact. Titanium grade V plates with four different thicknesses of TiO2 layer/color were used: absent/gray (Control group), 40–50 nm/pink (Pink group), 130 nm/gold (Gold group) and 140 nm/rosé (Rosé group). In vitro experiments used Saos-2 cells and included cell growth analysis, phospho-Histone H3 and procollagen I staining, cell viability analysis, and a cell migration assay at 12, 24, 40 and to 48 h. Few differences were seen among the groups, with no clear behavior of cellular activity according to the TiO2 thickness. The Control group showed a greater cell count. Phospho-Histone H3 staining was similar among the groups and procollagen I staining was greater in the Rosé group. Cell viability analysis showed a significant difference for live cell counts (greater in the Rosé group) and no difference for the dead cell counts. The cell migration assay showed a delay for the Rosé group up to 40 h, where full repopulation of cell-free areas was obtained at 48 h. The results suggest that the TiO2 layers of the commercial miniscrews have minimal biological effects, including cytotoxicity, with possibly negligible or minimal clinical implications.

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“…However, approximately 5% to 15% of miniscrews reportedly fail in clinical practice, and such failures are evidently associated with various factors including inflammation of peri-implant tissue 2345. Therefore, in order to prevent the inflammation or infection of surrounding tissues during the insertion of miniscrews, most of the commercially available orthodontic miniscrews are sealed and marketed for single use.…”

Section: Introductionmentioning

confidence: 99%

Effects of recycling on the biomechanical characteristics of retrieved orthodontic miniscrews

et al. 2017

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ObjectiveThe aim of this study was to compare recycled and unused orthodontic miniscrews to determine the feasibility of reuse. The comparisons included both miniscrews with machined surfaces (MS), and those with etched surfaces (ES).MethodsRetrieved MS and ES were further divided into three subgroups according to the assigned recycling procedure: group A, air-water spray; group B, mechanical cleaning; and group C, mechanical and chemical cleaning. Unused screws were used as controls. Scanning electron microscopy, energy-dispersive X-ray spectrometry, insertion time and maximum insertion torque measurements in artificial bone, and biological responses in the form of periotest values (PTV), bone–implant contact ratio (BIC), and bone volume ratio (BV) were assessed.ResultsMorphological changes after recycling mainly occurred at the screw tip, and the cortical bone penetration success rate of recycled screws was lower than that of unused screws. Retrieved ES needed more thorough cleaning than retrieved MS to produce a surface composition similar to that of unused screws. There were no significant differences in PTV or BIC between recycled and unused screws, while the BV of the former was significantly lower than that of the latter (p < 0.05).ConclusionsThese results indicate that reuse of recycled orthodontic miniscrews may not be feasible from the biomechanical aspect.

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Evaluation of the surface characteristics of anodic oxidized miniscrews and their impact on biomechanical stability: An experimental study in beagle dogs

Cited by 21 publications

References 38 publications

Overcoming the biological aging of titanium using a wet storage method after ultraviolet treatment

Overcoming the biological aging of titanium using a wet storage method after ultraviolet treatment

Biological Effects of Anodic Oxidation on Titanium Miniscrews: An In Vitro Study on Human Cells

Effects of recycling on the biomechanical characteristics of retrieved orthodontic miniscrews

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