An in vitro study of the stretching time-associated force loss generated by elastomeric chains and NiTi closed coil springs

Shaddud, A N; Косырева, Т. Ф.

doi:10.17116/stomat20189706113

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Of course, force decay may be influenced by factors like temperature and pH levels. It has been demonstrated that in vitro, simulating an oral environment with a basic pH level of 7.26, force decay occurs more rapidly than in an acidic pH level of 4.95 or in air [7,11,23,24].…”

Section: Resultsmentioning

confidence: 99%

Mechanical Strength Variety of Orthodontic Polymeric Chains In vitro assessment and mathematical model

Bunta¹,

Mureşan²,

Păcurar³

et al. 2019

Mat.Plast.

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Elastomeric chains, as means of force delivery, are one of the most studied elements of the orthodontic field. Effects on tooth movement are closely related to force degradation degrees of these polymers. Unfortunately, due to varied manufacturing techniques and materials, different brands of elastomeric chains offer different initial force values and different force decay, with direct impact on tooth movement duration and effectiveness and quality of orthodontic treatments.

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Section: Resultsmentioning

confidence: 99%

Mechanical Strength Variety of Orthodontic Polymeric Chains In vitro assessment and mathematical model

Bunta¹,

Mureşan²,

Păcurar³

et al. 2019

Mat.Plast.

View full text Add to dashboard Cite

show abstract

“…7,16,17 However, NiTi closed-coil spring seems to experience a reduced force after 4 weeks, thus increasing the total treatment time, 18 and another study has also found that NiTI closed coil spring also experiences force-loss around 13% after almost a month of use. 19 A recent study has also reported that neither the NiTi nor elastomeric chains generate significant force in the rate of tipping and rotation; even elastomeric chains even cause more pain. 20 Thus, it can be said that studies are still limited on the use of NiTi closed-coil springs and its relationship with force degradation, length of treatment time, on how to reduce total treatment time, improve patient cooperation, and minimize possible negative side effects.…”

Section: Introductionmentioning

confidence: 99%

In vitro study of the stretching time-associated force magnitude generated by NiTi and stainless-steel closed coil springs

Ongko

Yusuf

Bahirrah

2023

Majalah Kedokteran Gigi Indonesia

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Closed coil spring is an additional tool in a fixed-orthodontic treatment. NiTi is an orthodontic alloy that has shape memory and elasticity features, while stainless steel has properties of malleability, low friction between wire-bracket, as well as easy soldering and welding. Various properties of closed coil springs have been widely studied, but research on the stretching time remains unclear. This study aimed to determine the effect and differences in the stretching time for 7 days, 14 days, 21 days, and 28 days on the force magnitude of NiTi and stainless-steel (SS) closed coil spring. A 7 x 5 x 1 cm acrylic blocks with 1 cm acrylic posts were employed, and 25 mm closed coil springs were attached to the acrylic posts using modified T-sticks. The springs were immersed in an artificial saliva with pH of 6.75 for 7, 14, 21, and 28 days in an incubator at 37 °C. The container was removed from the incubator and the force was measured using a universal testing machine. Kolmogorov-Smirnoff test was carried out to analyze parametricdata, while independent T-test was used to determine the difference between each group. There was a significant effect of stretching time on the force magnitude of the SS closed coil spring in all the groups (p < 0.05). There was no significant effect of stretching time on the force of the NiTi closed coil spring on days 7, 14, and 21 (p > 0.05) but there was a significant effect on day 28 (p < 0.05). A significant effect between the ratio of the SS and NiTi closed coil spring (p < 0.05) was confirmed. Longer stretching time indicated a force loss in the SS closed-coil spring, while the NiTi spring had a more stable force which implies a formidable treatment-time for orthodontic treatment.

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An in vitro study of the stretching time-associated force loss generated by elastomeric chains and NiTi closed coil springs

Cited by 2 publications

References 7 publications

Mechanical Strength Variety of Orthodontic Polymeric Chains In vitro assessment and mathematical model

Mechanical Strength Variety of Orthodontic Polymeric Chains In vitro assessment and mathematical model

In vitro study of the stretching time-associated force magnitude generated by NiTi and stainless-steel closed coil springs

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