Weldability of beta titanium arch wires

Donovan, M.; Lin, John Jin-Jong; Brantley, William A.; Conover, John P.

doi:10.1016/0002-9416(84)90060-5

Cited by 22 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrical resistance welding, one of the techniques for joining orthodontic wires, has been studied to find optimum conditions for b-Ti wires, [7][8][9] the only orthodontic wires possessing true weldability. 1,2,7 Conventional methods for dental soldering have not been used for b-Ti and Ni-Ti orthodontic wires because of their high melting points and extremely high reactivity with oxygen at high temperatures. Titanium alloys can be soldered only in a vacuum or an argon environment, and the elevated temperature causes precipitation of the a-Ti phase, which may result in degradation of the mechanical properties of orthodontic b-Ti wire.…”

Section: Introductionmentioning

confidence: 99%

Joining characteristics of orthodontic wires with laser welding

et al. 2007

Self Cite

View full text Add to dashboard Cite

Laser welding 0.016 x 0.022 in. beta-Ti, Ni-Ti, and Co-Cr-Ni orthodontic wires was investigated by measuring joint tensile strength, measuring laser penetration depth, determining metallurgical phases using micro X-ray diffraction (micro-XRD), and examining microstructures with an scanning electron microscope (SEM). Welding was performed from 150 to 230 V. Mean tensile strength for Ni-Ti groups was significantly lower (p < 0.05) than for most other groups of laser-welded specimens. Although mean tensile strength for beta-Ti and Co-Cr-Ni was significantly lower than for control specimens joined by silver soldering, it was sufficient for clinical use. The beta-Ti orthodontic wire showed deeper penetration depth from laser welding than the Ni-Ti and Co-Cr-Ni orthodontic wires. Micro-XRD patterns of laser-welded beta-Ti and Ni-Ti obtained 2 mm from the boundary were similar to as-received specimens, indicating that original microstructures were maintained. When output voltages of 190 V and higher were used, most peaks from joint areas disappeared or were much weaker, perhaps because of a directional solidification effect, evidenced by SEM observation of fine striations in welded beta-Ti. Laser welding beta-Ti and Co-Cr-Ni wires may be acceptable clinically, since joints had sufficient strength and metallurgical phases in the original wires were not greatly altered.

show abstract

Section: Introductionmentioning

confidence: 99%

Joining characteristics of orthodontic wires with laser welding

et al. 2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…This wire provides a greater working range than SS wires and affords ideal dimensional stability to avoid dumping the anterior during retraction. 7 Opening the bite now requires less than half the time that was needed with SS. Retranol also needs fewer archwire changes and adjustments.…”

Section: Retranolmentioning

confidence: 99%

A Review of Orthodontic Archwires

Malik¹,

Dubey²,

Kallury³

et al. 2015

JOFR

View full text Add to dashboard Cite

Today more than hundred years have passed since Dr Edward angle placed his first archwire into a patient's mouth and orthodontics began. It was during that period many innovations did occur that have been explained in terms of art. As time passed scientifically based orthodontics evolved and we see from that time much new innovation in material science have sum uped with new treatment approach and modalities. However, when we turn around and see the developments and innovations in the material science, we stand with pride: but the urge to make treatment still more comfortable and less time consuming, have led us to the introduction of a plethora of new orthodontic materials and products that represent significant improvement over their predecessors. This article compiles all archwire from angle era till recent available newer archwire.

show abstract

“…Nickel-titanium (NiTi) and Beta-titanium (Beta-Ti) alloys are part of this group and satisfactory clinical welding has been obtained with them [12][13] . Factors such as the cross-section of wires and metal alloy as well as the type of welding machine, tensile strength, shape of the electrodes, pressure and heat dissipation can influence the mechanical characteristics of union between orthodontic wires 14 .…”

Section: Introductionmentioning

confidence: 99%

The effect of electric spot-welding on the mechanical properties of different orthodontic wire alloys

Nascimento

Santos

Pithon³

et al. 2012

Mat. Res.

View full text Add to dashboard Cite

The aim of this study was to test the hypothesis that there is a direct relationship between surface structure and tensile strength of orthodontic alloys submitted to different levels of welding current. Three types of alloys were assessed. One hundred and eight cross-sectional test specimens ("X") were made, 18 for each wire combination, and divided into 6 groups: SS (steel-steel); SN (steel-NiTi); SB (steel-Beta-Ti); NN (NiTi-NiTi); NB (NiTi-Beta-Ti) and BB (Beta-Ti-Beta-Ti), submitted to 6 spot-welding procedures at different levels of current (Super Micro Ponto 3000). Student-Newman-Keuls, Wilcoxon signed-rank, and Kruskal-Wallis tests were used (p < .05). Statistical difference was found between SN group and all the other alloy combinations (p < .05). Initial roughness of alloys ranged from .04 to .55 Ra, with statistical difference between groups (p < .001). The hypothesis was rejected and the tensile strength of Ti-alloys combinations Steel × Beta-Ti was significantly affected by the current level at P50, which changed the properties and structure of the wires.

show abstract

Weldability of beta titanium arch wires

Cited by 22 publications

References 4 publications

Joining characteristics of orthodontic wires with laser welding

Joining characteristics of orthodontic wires with laser welding

A Review of Orthodontic Archwires

The effect of electric spot-welding on the mechanical properties of different orthodontic wire alloys

Contact Info

Product

Resources

About