Coated nickel titanium archwires and their uncoated counterparts: In-vitro contemporary comparison of unloading forces

Pinzan-Vercelino, Célia Regina Maio; Gurgel, Júlio de Araújo; Bramante, Fausto Silva; Pessoa, Thalita Fonseca; Albertin, Silvia Américo; Fialho, Melissa Proença Nogueira; Pinzan, Arnaldo

doi:10.1016/j.ortho.2020.01.007

Cited by 5 publications

(8 citation statements)

References 25 publications

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“…7 Five areas were irradiated on the periodontal ligament of the canines for 15 seconds according to the previous published literature. 8 This method helped us cover all the PDL fibres and the alveolar bone around the canine. The wavelength used was 940 nm and this allowed for a penetration of light upto a depth of 0.0001 mm.…”

Section: Discussionmentioning

confidence: 99%

“…This was similar to the studies reported previously in literature. 8 A 2004 study showed that the irradiated canines were retracted at a rate 34% greater than the control canines over 60 days. The author reported that LLLT significantly accelerates orthodontic movement in humans with a healthy response from periodontal tissues.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore it can be considered in order to shorten the treatment duration. 8 The mechanisms of LLLT rely on the red and near‑infrared wavelengths in the electron transport chain in the mitochondria of the cells. The light absorption causes an activation of respiratory chain and oxidation of the NADH pool.…”

Section: Discussionmentioning

confidence: 99%

“…The laser was applied at 5 points immediately after the spring attachment for 15 seconds. 8 Fig. 4: A: Laser application points on the buccal side; B : Laser application points on the palatal side; C : Force of 150 gms measured using dontrix gauge; D: Collection of GCF before retraction is initiated Collection; E: Collection og GCF after 2 months of initiaiton of retraction Then 5µL of Gingival Crevicular Fluid (GCF) was collected using a calibrated microcapillary tube from the distal sites of the canines in both the groups and transferred to transport media containing phosphate buffer saline (PBS) which was kept in a box containing dry ice.…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of effectiveness of low level laser therapy in accelerating orthodontic tooth movement-An in vivo study

Kalia¹,

Bobade²,

Nene³

et al. 2023

IJODR

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To assess the acceleration of tooth movement in canine retraction and to assess the interleukin 1β level in Gingival Crevicular Fluid. 0.022 slot MBT brackets, 0.018 inch stainless steel arch wire, Low level laser (Gallium-Aluminium-Arsenide Laser), ELISA kit, Micro-capillary tube, Digital Vernier calliper, Dontrics gauge, NiTi closed coil springs Open labelled split mouth, non-experimental interventional institutional based study. By coin toss method, each of the participant’s mouth was randomly assigned either to the laser therapy (group 1) and 40 reference sites (group 2). On the experimental site orthodontic treatment with fixed appliance, a combination with low level laser therapy (Gallium-Aluminium-Arsenide laser) to the canine on the days 3,7,14 and then every 15 days for 2 months was initiated. Then 5µL of Gingival Crevicular Fluid (GCF) was collected to analyse the interleukin 1β levels using the ELIZA kit. The measurements were made with the help of a digital Vernier calliper. The laser group showed a significant greater reduction in the canine to molar distance than the site treated with conventional technique. The interleukin 1 β levels raised significantly for the site treated with laser as compared to the other. We observed that: Increased inflammatory response in the form of raised interleukin levels and Faster distalization of the canine when adjunct with low level soft tissue laser. The entire data was statistically analyzed using Statistical Package for Social Sciences (SPSS version 21.0, IBM Corporation, USA) for MS Windows. In Statistics, unpaired t-test is a used to compare equality of two population means and F-test is used to compare the equality of two population variance using that the samples were drawn from different populations. There was a clinically appreciable amount of retraction seen resulting in faster space closure between the canine and the first permanent molar in the group that had low level laser than the other group that was treated by the conventional therapy. We also observed a considerable rise in the interleukin 1 β levels in the laser group.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of effectiveness of low level laser therapy in accelerating orthodontic tooth movement-An in vivo study

Kalia¹,

Bobade²,

Nene³

et al. 2023

IJODR

View full text Add to dashboard Cite

show abstract

“…A coated wire having statistically significant (p≤0.05) higher loading curve when compared to the analogous non-coated wire. [7][8][9][10][11][12] A higher elastic modulus value may come from either: (1) harder surface coating, (2) thinner surface coating, (3) stiffer underlying wire (in coated version) or a combination of all of these factors. Of the remaining, the majority exhibited the trend of the non-coated wire having a higher hysteresis due to a combination of higher loading forces and /or lower unloading forces.…”

Section: Discussionmentioning

confidence: 99%

Esthetic nickel titanium wires– Do they deliver the same force?

Kalia¹,

Joshi²,

Mandsaurwala³

et al. 2022

IJODR

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To test the difference in loading and unloading forces delivered by six coated nickel-titanium wires and their non-coated equivalents. Commercially available six coated nickel-titanium wires and their non-coated equivalents of sizes 0.016-inch diameter round and 0.016 X 0.022-inch rectangular cross-section were procured. The wires were evaluated using a three-point bending test based on the method in ISO Standard 15841. No statistically significant differences in force values were found between coated and non-coated wires, listed by deflection in three-point bending, for these specific groups.Statistical analysis was done using SPSS version 11.5 (Chicago, III). Analysis of variance was performed with Sheffe post hoc for the mean comparison among the measurements of each loading and unloading deflection for coated and non-coated wires. Student’s t-tests was performed for the mean comparisons between non coated and coated groups for each deflection. There is no significant difference in load response between coated and non-coated nickel-titanium wires of the same size when subjected to the same deflection using a standard three-point bend test method.

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Corrosion of Fixed Orthodontic Appliances: Causes, Concerns, and Mitigation Strategies

Fróis,

Santos,

Louro

2023

Metals

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The orthodontic supply market is a prosperous billion-dollar industry, driven by an increasing demand for orthodontic appliances. The supremacy of metallic first-generation biomaterials is evident for manufacturing brackets, archwires, bands, and other components due to their well-recognized chemical inertness, spontaneous passivation, biocompatibility, and favorable mechanical properties combination. However, the oral cavity is the ultimate corrosion-promoting environment for any metallic material. In this work, the general picture of the intraoral degradation of fixed orthodontic appliances is first addressed, from the causes to the harmful effects and their oral clinical implications. Current mitigation strategies are also pointed out, including the alloys’ bulk composition adjustment combined with new and advanced manufacturing processes and/or their surface treatment or coating deposition. The versatile use of thin films and coatings stands out with different deposition technologies: Many in vivo and in vitro efforts have been devoted to oral aging, from monolithic to composite architectures and micro- to nano-scale materials, to meet the best and safest oral practice demands. Unfortunately, literature data suggest that even the existing commercially available protective coatings have drawbacks and are fallible. Further multidisciplinary research is still required to effectively mitigate the corrosion behavior of fixed orthodontic appliances.

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Coated nickel titanium archwires and their uncoated counterparts: In-vitro contemporary comparison of unloading forces

Cited by 5 publications

References 25 publications

Evaluation of effectiveness of low level laser therapy in accelerating orthodontic tooth movement-An in vivo study

Evaluation of effectiveness of low level laser therapy in accelerating orthodontic tooth movement-An in vivo study

Esthetic nickel titanium wires– Do they deliver the same force?

Corrosion of Fixed Orthodontic Appliances: Causes, Concerns, and Mitigation Strategies

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