Mechanical evaluation of quad-helix appliance made of low-nickel stainless steel wire

OBJECTIVE: The objective of this study was to test the hypothesis that there is no difference between stainless steel and low-nickel stainless steel wires as regards mechanical behavior. Force, resilience, and elastic modulus produced by Quad-helix appliances made of 0.032-inch and 0.036-inch wires were evaluated. METHODS: Sixty Quad-helix appliances were made, thirty for each type of alloy, being fifteen for each wire thickness, 0.032-in and 0.036-in. All the archwires were submitted to mechanical compression test using an EMIC DL-10000 machine simulating activations of 4, 6, 9, and 12 mm. Analysis of variance (ANOVA) with multiple comparisons and Tukey's test were used (p < 0.05) to assess force, resilience, and elastic modulus. RESULTS: Statistically significant difference in the forces generated, resilience and elastic modulus were found between the 0.032-in 0.036-in thicknesses (p < 0.05). CONCLUSIONS: Appliances made of low-nickel stainless steel alloy had force, resilience, and elastic modulus similar to those made of stainless steel alloy.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.746.394 ◽

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.

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Comparison of polyetheretherketone cables and stainless steel wires for sternal fixation after median sternotomy

Journal of International Medical Research ◽

10.1177/03000605211041265 ◽

2021 ◽

Vol 49 (9) ◽

pp. 030006052110412

Author(s):

Duanchao Shu ◽

Jianpeng Li ◽

Yixin Zhao ◽

Yan Yang

Keyword(s):

Stainless Steel ◽

Steel Wire ◽

Median Sternotomy ◽

Control Group ◽

Steel Wires ◽

Fixation Effect ◽

Significant Difference ◽

Patient State ◽

Experimental Group

Objective To compare the sternal fixation effect of a polyetheretherketone (PEEK) cable product and stainless steel wire after median sternotomy. Methods A multicentre retrospective clinical trial was conducted in patients that underwent median sternotomy for a range of surgical reasons. The sternum was fixed using PEEK sternal cables in the experimental group and stainless steel wires in the control group. The general patient state, product manoeuvrability, bone and wound healing state and blood test results were evaluated at seven visits during the preoperative, surgical and follow-up periods. Results A total of 108 patients (54 in each group) were included in the analysis at the final 180-day follow-up. The sternum was successfully closed using PEEK cables or steel wires in all patients and all healed well. No pathological changes were found on the X-ray imaging. Computed tomography imaging confirmed ideal fracture healing. No significant difference was found between the experimental group and the control group in outcomes. Conclusion PEEK cables are easy to implant and show desirable effectiveness in sternal fixation without any observed side-effects.

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An Evaluation of Mechanical Properties (Tensile strength &Elastic Modulus) of Soldered Straight Stainless Steel Wire

Iraqi Dental Journal ◽

10.46466/idj.v40i1.138 ◽

2018 ◽

Vol 40 (1) ◽

pp. 15-18

Author(s):

Wael A Alrazzaq

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Stainless Steel ◽

Elastic Modulus ◽

Steel Wire ◽

Testing Machine ◽

Control Group ◽

Orthodontic Appliances ◽

Efficient Treatment ◽

Steel Wires

The joining of a metal framework is frequently necessary to create individual orthodontic appliances and to achieve efficient treatment procedures. Stainless steel wires can be fused together by welding but this generally required reinforcement with solder. The present study was conducted to compare and evaluate the mechanical properties ( i.e. the tensile strength and elastic modulus )of silver soldered joints of stainless steel. A total of 40 wire specimens were prepared. The tensile strength and elastic modulus tests were carried out via by universal testing machine. the results indicated that the mean tensile strength of soldered group is lower than that of soldered group. As well, there are highly significant differences between two groups for tensile strength (p<0.01). Furthermore, the soldered group has the highest mean of elastic modulus than that of control group. As well, there are highly significant differences between two groups for elastic modulus (p<0.01). It is concluded that Stainless steel wires (Remanium)have superior mechanical properties with regard to tensile strength and elastic modulus.

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