Comparison of friction forces between stainless orthodontic steel brackets and TiNi wires in wet and dry conditions

Phukaoluan, Aphinan; Khantachawana, Anak; Kaewtatip, Pongpan; Dechkunakorn, Surachai; Anuwongnukroh, Niwat; Santiwong, Peerapong; Kajornchaiyakul, Julathep

doi:10.1016/j.ortho.2016.12.017

Cited by 11 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The literature, however, makes more reference to testing under dry friction conditions. 6 - 8 , 13 - 15 Despite the fact that some researchers have used artificial saliva, 9 , 10 , 21 , 22 , 23 in almost all of these studies, no attention was directed toward the rheological characteristics of the artificial saliva used. Based on that and considering that the cross-section of orthodontic wires is also a factor that influences sliding mechanics, in this study it was evaluated the friction established between orthodontic brackets and NiTi archwires with varying cross-sections, under different lubrication conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Despite this requirement, in some studies where artificial saliva has been introduced during the friction test, 9 , 10 , 21 - 23 no mention has been made regarding the ability of these fluids to simulate the viscosity and adsorption of human saliva. Exceptions are the investigations carried out by Al-Mansouri et al 17 and Leal et al 18 However, while in the latter study artificial saliva was found to be a suitable substitute for human saliva in friction tests; in the former, artificial saliva was not considered an ideal alternative to human saliva.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lubricating conditions: effects on friction between orthodontic brackets and archwires with different cross-sections

Almeida

Amaral

et al. 2019

Dental Press J. Orthod.

View full text Add to dashboard Cite

Objective: This study investigated the effect of the condition of lubrication on the friction between brackets and NiTi archwires of different rounded cross-sections. Methods: Brackets (Roth, GAC) were affixed to a device connected to a universal testing machine into which segments of archwire were placed (NiTi, Nitinol, GAC) with cross-sections of 0.012-in, 0.016-in and 0.020-in. Once the wire was in the bracket slot, the following lubricants were applied: human saliva (HS: positive control), distilled water (DI), mucin-based (MUC) or carboxymethylcellulose-based (CMC) artificial saliva. In the negative control group, no lubricant was used. The combination between the wire cross-sections and the lubrication condition generated 15 groups with 15 samples each. Data were submitted to two-way analysis of variance and Tukey’s test. Results: There was no significant interaction between the wire cross-section and the condition of lubrication (p= 0.901). Irrespective of whether lubricants were used or not, there was a significant increase in friction with an increase in the cross-section of the wire (p< 0.001). For any wire, the group tested in the presence of MUC was not different from that in which HS was applied. On the other hand, when the application of lubricants was suppressed, significantly higher friction values were observed. The CMC group and the DI group demonstrated intermediate behavior. Conclusions: Friction increased with the increase of the cross-section of the NiTi archwire, but regardless of the archwire, friction with MUC artificial saliva was similar to that of HS and lower than in dry conditions.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lubricating conditions: effects on friction between orthodontic brackets and archwires with different cross-sections

Almeida

Amaral

et al. 2019

Dental Press J. Orthod.

View full text Add to dashboard Cite

show abstract

“…Other results exist in the literature on this issue, but a controversy was found on the effect of using lubricating artificial saliva or not [24][25][26][27]. Since, the methodology used was different to the one used in the current work (regarding the number of brackets included, and their alignment), this did not allow us to make a direct comparison.…”

Section: Influence Of Wet and Dry Conditionsmentioning

confidence: 88%

Mechanical Characterization of Orthodontic Archwires in a Pseudo In-Vivo Context

Wagner

Rémond

Bolender

et al. 2021

Stem Cells and Regenerative Medicine

View full text Add to dashboard Cite

Orthodontic fixed appliances are used to correct dental malocclusions by optimizing tooth movement and associated bone remodelling. Currently, orthodontic archwires made of shape memory alloys (SMAs) are widely used to initiate these treatments. We conduct experiments on SMA wires in pseudo in-vivo conditions, complementary to ISO standards, to assess the influence of temperature and humidity and to highlight their expected mechanical behaviour for clinical use. For this, an in-house built measurement device was developed to carry out experiments at controlled temperatures (21°C and 35°C) and in dry or wet conditions (artificial saliva). The dental arch was reproduced by 3D printing. The results show that the temperature has a major influence on the delivered forces whereas wet or dry conditions seem to have less impact. Also, we emphasize that at 35°C (in mouth conditions), in wet or dry conditions, SMAs superelasticity is only effective for displacements up to about 3 mm when an entire dental arch is considered.

show abstract

“…Stainless-steel ligatures result in reduced friction forces compared to elastic ligatures [ 55 ]. Previous investigations presented controversial results regarding the influence of saliva on friction and the resultant orthodontic forces [ 56 , 57 ]. In addition, the fully customized lingual appliances are always customized on a VTO setup model, while the labial appliances were not.…”

Section: Discussionmentioning

confidence: 99%

Vertical and Orovestibular Forces Generated by Beta-Titanium and Stainless-Steel Rectangular Wires in Labial and Fully Customized Lingual Bracket Systems

et al. 2021

View full text Add to dashboard Cite

This study aimed to investigate the force values exerted from rectangular wires when combined with conventional labial and fully customized lingual appliances under predefined, idealized activation. Fully customized lingual brackets of two brands Incognito™ (3M Unitek, Monrovia, MN, USA) and WIN (DW Lingual Systems, Bad Essen, Germany) and labial brackets of another brand, discovery® MIM and discovery® smart systems (Dentaurum, Ispringen, Germany), were chosen. Stainless-steel and beta-titanium wires of 0.018” × 0.025” were examined. For IncognitoTM, 0.0182” × 0.025” beta-titanium wires were tested. Intrusion/extrusion and orovestibular movements were performed in a range of 0.2 mm, and the forces were recorded for each 0.1 mm of the movement. Mean values and standard deviations were calculated for all measurements, and ANOVA was performed for statistical analysis. Slight differences were observed between the forces generated from beta-titanium and stainless-steel wires. The same wire generated in some cases 5–53% higher forces with the lingual appliance due to the vertical orientation of the long walls during intrusion/extrusion and increased wire stiffness at the anterior region. Beta-titanium and stainless-steel 0.018” × 0.025” wires can generate similar force values during the final stages of the orthodontic therapy; thus, possibly only one of the two alloys could be used in each orthodontic wire sequence.

show abstract

Comparison of friction forces between stainless orthodontic steel brackets and TiNi wires in wet and dry conditions

Cited by 11 publications

References 18 publications

Lubricating conditions: effects on friction between orthodontic brackets and archwires with different cross-sections

Lubricating conditions: effects on friction between orthodontic brackets and archwires with different cross-sections

Mechanical Characterization of Orthodontic Archwires in a Pseudo In-Vivo Context

Vertical and Orovestibular Forces Generated by Beta-Titanium and Stainless-Steel Rectangular Wires in Labial and Fully Customized Lingual Bracket Systems

Contact Info

Product

Resources

About