Bending Properties of General Purpose Stainless Steel Wire Formed for Orthodontic Use

2013 ◽  
Vol 746 ◽  
pp. 394-399
Author(s):  
Niwat Anuwongnukroh ◽  
Yosdhorn Chuankrerkkul ◽  
Surachai Dechkunakorn ◽  
Pornkiat Churnjitapirom ◽  
Theeralaksna Suddhasthira
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Orthodontic Treatment ◽  
Steel Wire ◽  
General Purpose ◽  
Stainless Steel Wire ◽  
Bending Test ◽  
Bending Properties ◽  
Steel Wires ◽  
Significant Difference

The archwire is generally used in fixed appliances for orthodontic treatment to correct dental malocclusion. However, it is interesting to know whether general purpose stainless steel wire could replace commercial orthodontic archwire in orthodontic practice for economic reasons. The purpose of this study was to determine the bending properties of general purpose stainless steel wire compared with commercial orthodontic stainless steel wires after forming as an archwire for orthodontic use. The samples used in this study were 90 general purpose and 45 commercial (Highland) round stainless steel wires in 0.016, 0.018, and 0.020 sizes (30 general purpose and 15 commercial wires for each size). All 15 general purpose stainless steel wires with different sizes were formed into orthodontic archwire with a Universal Testing Machine. All samples were tested (three-point bending test) for mechanical properties. The results showed no significant difference between general purpose and commercial orthodontic wires in size 0.016 for 0.1 mm offset bending force, 0.2% yield strength, and springback. Although many mechanical properties of general purpose wires differed from commercial wires, their values conformed to other previous studies within the range of clinical acceptance. In conclusion, orthodontic formed general purpose round stainless steel wires had statistically different (p <0.05) mechanical properties from commercial orthodontic stainless steel wires (Highland) but the mechanical properties were acceptable to use in orthodontic treatment.

Comparison of Properties between General Purpose Stainless Steel Wire and Commercial Orthodontic Stainless Steel Wire

2011 ◽  
Vol 378-379 ◽  
pp. 706-710 ◽  
Author(s):  
Niwat Anuwongnukroh ◽  
Surachai Dechkunakorn ◽  
Pornkiat Churnjitapirom ◽  
Ekkapot Sukhanun ◽  
Tunwa Intrarasuksanti ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Steel Wire ◽  
Nickel Content ◽  
Chemical Properties ◽  
Surface Characteristics ◽  
General Purpose ◽  
Stainless Steel Wire ◽  
Steel Wires

In Thailand, commercial orthodontic stainless steel wires are imported from overseas and expensive. However, lower cost general purpose stainless steel wires, the same type and number as commercial orthodontic stainless steel wires may be used for orthodontic purposes. Objective: This study aimed to determine the physical, mechanical and chemical properties of general purpose stainless steel wire compared with commercial orthodontic stainless steel wires. Materials and Method: Two commercial orthodontic stainless steel wires (Ormco and Highland) and general purpose stainless steel wire (SUS 304H) were evaluated. The physical and mechanical properties were studied according to ISO 15841:2006 and corrosion resistance was studied according to ISO 10271:2001. Surface characteristics and composition were studied by scanning electron microscope (SEM) and electron probe micro analyzer, respectively. Results: The experiment indicated that SUS 304H had the diameter and mechanical properties in the range of orthodontic stainless steel wires. The surface characteristics SUS 304H were similar from observation by SEM magnifications but SUS 304H had lower corrosion resistance due to lower nickel content. The composition confirmed that the three samples wires were genuine type 304. Conclusion: SUS 304H properties are comparable to commercial orthodontic wire properties.

Evaluation of the Biomechanical Properties of Austenitic Stainless Steel Fixed Retainers

2020 ◽  
Vol 71 (9) ◽  
pp. 320-324
Author(s):  
Silvia Izabella Pop ◽  
Zakarias Szabolcs ◽  
Dana Cristina Bratu ◽  
Mircea Dudescu ◽  
Mariana Pacurar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Orthodontic Treatment ◽  
Biomechanical Properties ◽  
Mechanical Parameters ◽  
Bending Properties ◽  
Steel Wires ◽  
Fixed Appliances ◽  
Fixed Retainers ◽  
Fixed Retention

The insertion of the fixed retention is an important stage of the orthodontic treatment after fixed appliances. The fixed retainers used in orthodontic treatments must be passive towards teeth, without developing any stress. This characteristic is challenging to achieve due to the mechanical properties (bending properties, stiffness) of the materials the retainers are manufactured from. Residual stress might be generated because of their flexibility and because the chemical composition of the stainless steel wires.This study aims to determine the mechanical properties of different austenitic stainlees steel wires used in retention. Also, we have compared the mechanical properties of wires with different sizes, as well as wires with the same size, new and intra-orally used. The results confirm that the mechanical parameters of the two types of wires used in fixed retention (3 braided round wires and 6 braided Flat wires) present statistically insignificant differences. The study also reflects that the mechanical properties of the intra-orally used wires showed decreased values of the parameters.

scholarly journals Three Palatal Arches Used to Correct Posterior Dental Crossbites

2006 ◽  
Vol 76 (6) ◽  
pp. 1047-1051 ◽  
Author(s):  
Fernando Lima Martinelli ◽  
Priscilla Sobral Couto ◽  
Antonio Carlos Oliveira Ruellas
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Statistical Analysis ◽  
Orthodontic Treatment ◽  
Elasticity Modulus ◽  
Steel Wire ◽  
Testing Machine ◽  
Stainless Steel Wire ◽  
Quad Helix ◽  
One Way Anova

Abstract Objective: To assess the force, resilience, and elasticity modulus produced by the Coffin appliance, “W” arch, and quad-helix made with 0.032-inch and 0.036-inch stainless steel wire. Materials and Methods: Two groups of 15 arches were made as Coffin appliances, two groups of 15 arches were made as “W” arches, and two groups of 15 arches were made as quad-helices. One group of each appliance was formed in 0.032-inch and one group in 0.036-inch stainless steel wire. All arches (6 groups of 15 each) were submitted to compression trials in the mechanical testing machine EMIC DL-10000, simulating 5-, 8-, 10-, and 12-mm activation. The force and resilience means received a one-way ANOVA statistical analysis. Results: The results showed that the mechanical properties depended on the shape of the appliance, the diameter of the wire used, and the amount of activation. Conclusions: The three appliances assessed produce appropriate forces for orthodontic treatment as long as they are correctly planned during clinical application.

Properties of Three Commercial Orthodontic Round Stainless Steel Wire

2014 ◽  
Vol 884-885 ◽  
pp. 619-624
Author(s):  
Nathaphon Tangit ◽  
Surachai Dechkunakorn ◽  
Niwat Anuwongnukroh ◽  
Pornkiat Churnjitapirom ◽  
Peerapong Tua-Ngam
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Steel Wire ◽  
Chemical Properties ◽  
Bending Test ◽  
Three Point Bending ◽  
Bending Force ◽  
Steel Wires

Objective: This study aimed to determine and compare the diameter, mechanical properties (tensile strength: flexural strength, flexural modulus of elasticity, 0.2% yield strength and springback: three point bending test: bending stiffness and 0.1mm. offset bending force) and chemical properties (composition and corrosion resistance) of three commercial orthodontic round stainless steel wires. Materials and Method: The samples of this study are three commercial brands of orthodontic round stainless steel wires, Highland (USA), Dentaurum (Germany) and W&H (China), 0.016 inch and 0.018 inch in size. The diameter was measured by micrometer and the mechanical properties were analyzed with tensile strength and three point bending test by Universal Testing Machine according to ISO 15841:2006. The composition was evaluated by Energy Dispersive X-ray Spectrometer (EDS) and the corrosion resistance was analyzed by a potentiodynamic polarization technique according to ISO 10271:2001. The data were analyzed with the Kolmoforov-Smith test, One-way ANOVA and Tukeys test. Results: There were significant differences (p<0.05) in diameter of the three commercial brands of orthodontic round stainless steel wires in both size except 0.016 in diameter between Dentaurum and Highland stainless steel wire. In terms of tensile strength, there were significant differences (p<0.05) in the flexural strength, flexural modulus of elasticity and springback in each variable, except W&H stainless steel wire with flexural strength in 0.016 and 0.018 wire size and springback in 0.018 wire size. However, in 0.2% yield strength, there was no significant difference in each brand and size except Dentaurum and Highland stainless steel in 0.018 wire size. For the three point bending test, there were significant differences (p<0.05) in bending stiffness and 0.1mm. offset bending force of each brand and size except 0.1mm. offset bending force between Dentaurum and Highland stainless steel in 0.016 wire size. In terms of chemical properties, there were the same elements but difference was found in percentage of each element, and W&H stainless steel had the least corrosion resistance. Conclusion: There were significant differences among three commercial orthodontic stainless steel wires in diameters, mechanical properties and chemical properties which will produce different force on each wire during tooth movement. All three brands, however, are acceptable for orthodontic use. The orthodontist should be aware of these differences in using stainless steel for orthodontic treatment.

Shearing and Shaving Process of Stainless Steel Wire at Micro Scale

2020 ◽  
Vol 311 ◽  
pp. 74-79
Author(s):  
Chao Cheng Chang ◽  
Tzu Hsiang Hung ◽  
Jung Shu Chang
Keyword(s):  
Stainless Steel ◽  
Steel Wire ◽  
Load Cell ◽  
Experimental Results ◽  
Stainless Steel Wire ◽  
Displacement Sensor ◽  
Micro Scale ◽  
Steel Wires ◽  
Sheared Edge ◽  
Die Set

This study investigated the effects of the die clearance on the shearing and shaving processes of the stainless steel (SUS316LVM) wire at micro scale. A die set was developed and installed on a precession press equipped with a load cell and a displacement sensor to conduct experiments. By using different punches in the same die set, the specimens prepared from 316LVM stainless steel wires with 0.5 mm diameter were first sheared and then shaved. Experimental results show that the burnished area of the sheared edge increases with the reduction of the clearance between the punch and die in the shearing process. The clearance also significantly affects the load curves. Moreover, the shaving process does increase the burnished area on the shaved edge of the specimen. By an appropriate feed in the shaving process, it is possible to trim the extra material from the sheared edge that results in a nearly complete burnished surface on the shaved edge of the stainless steel wire. This research provides a basis for understanding of the die clearance effect on the shearing and shaving processes at micro scale.

scholarly journals Mechanical properties of orthodontic wires on ceramic brackets associated with low friction ligatures

2017 ◽  
Vol 46 (3) ◽  
pp. 125-130
Author(s):  
Fernando KOIKE ◽  
Hiroshi MARUO ◽  
Rogério LACERDA-SANTOS ◽  
Matheus Melo PITHON ◽  
Orlando Motohiro TANAKA
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Mechanical Test ◽  
Steel Wire ◽  
Nickel Titanium ◽  
Bending Test ◽  
Test Machine ◽  
Orthodontic Wires ◽  
Niti Wire ◽  
Ceramic Brackets

Abstract Introduction Few studies investigated the mechanical properties of orthodontic wires on ceramic brackets associated the ligatures. Objective This study aimed to compare the load-deflection of orthodontic wires with round section of 0.016” made of stainless steel (SS), nickel-titanium (NiTi) and glass fiber-reinforced polymer composite (GFRPC). Material and method Sixty specimens obtained from 10 sectioned pre-contoured arches (TP Orthodontics), were divided into 3 groups of 20 according to each type of material (1 esthetic-type wire and 2 not esthetic) and length of 50 mm. The methodology consisted of a 3-point bending test using esthetic ceramic brackets (INVU, TP Orthodontics, Edgewise, 0.022”x 0.025”) as points of support. The tensile tests were performed on a mechanical test machine, at a speed of 10 mm/min, deflection of 1 mm, 2 mm and 3 mm. Friedman’s Non Parametric Multiple comparisons test was used (P<0.05). Result The nickel-titanium wire presented smaller load/ deflection compared with stainless steel. GFRPC wires had lower strength values among all groups evaluated (P<.05). The steel wire showed permanent deformation after 3 mm deflection, NiTi wire demonstrated memory effect and the esthetic type had fractures with loss of strength. Conclusion It can be concluded that steel wires have high strength values, requiring the incorporation of loops and folds to reduce the load / deflection. NiTi and GFRPC wires produced low levels of force, however the esthetic wire was shown to fracture and break.

Stapes Prosthesis Comparison

1982 ◽  
Vol 90 (2) ◽  
pp. 263-265 ◽  
Author(s):  
Dennis R. Elonka ◽  
Eugene L. Derlacki ◽  
Wiley H. Harrison
Keyword(s):  
Stainless Steel ◽  
Statistical Study ◽  
Steel Wire ◽  
Stainless Steel Wire ◽  
Significant Difference ◽  
Stapes Prosthesis

Ninety-four consecutive stapedectomy cases using the Robinson stainless steel prosthesis are compared with 100 consecutive cases using the House stainless steel wire prosthesis. The air-bone gap was closed to within 10 dB in 94% of the cases with the Robinson prosthesis and in 88% of the cases using the House stainless steel wire prosthesis. There appeared to be no difference in the improvement at 2,000 and 4,000 cycles between the two techniques and the results were the same. Statistical study revealed there is no significant difference in the two techniques and there is no other variable.

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