Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Orthodontic Wires"”.
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Degradation of NiTi springs through electronic actuation
… NiTi is a common SMA that is used mainly in orthodontic wires and light actuators such as on the NASA Pathfinder. However, when used in springs, the long-term reliability of these actuation forces has rarely been investigated. As SMAs are non-ferrous, it can be deduced that some structural …
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Corrosion between orthodontic archwires and bracket couples
Nickel-containing orthodontic wires have been reported to cause allergic reactions in sensitive individuals. An allergic reaction is related to corrosion of the alloys and subsequent leaching of nickel ions into the oral cavity. The purpose of this study was to determine if there is a significant …
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A Comparative Study of Conventional-Ligating and Self-Ligating Bracket Systems
… bracket systems using two different types of orthodontic arch wires in both wet and dry fields. Six different brands of upper right central incisor brackets with 0.018-in slots were evaluated. Group A : self-ligating bracket: Opal (Ultradent), Damon 2 (Ormco), Time (American Orthodontics), …
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Testing of Orthodontic Springs Using Geometric Variables
… method of space closure utilizes loops formed in orthodontic arch wires. The loops must provide adequate force characteristics to maintain controlled tooth movement. Generally, a moment-to-force (M/F) ratio of 10 mm is considered effective. The 1/2 Baldwin Spring is an effective loop, but it is …
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An Analysis of the Fatigue Resistance of Beta Titanium and the Effect of Spot-Welding Upon the Fatigue Resistance of this Alloy
This investigation was designed to establish a fatigue curve for beta titanium, determine the effect of spot-welding upon the fatigue resistance of this alloy, and provide qualitative observations about surface characteristics of different batches of TMA in relation to their fatigue lives. …
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Copper, Aluminum and Nickel: A New Monocrystalline Orthodontic Alloy
… properties of a newly-developed monocrystalline orthodontic archwire comprised of a blend of copper, aluminum, and nickel (CuAlNi). <strong>Methods: </strong>The sample was comprised of three shape memory alloys; CuAlNi, copper nickel titanium (CuNiTi), and nickel titanium (NiTi); from various …
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Mechanische Eigenschaften verschiedener Lötverfahren im Vergleich zur Laserschweißung kieferorthopädischer Drähte
Ziel: Das Ziel der Untersuchung war es, mechanische Unterschiede verschiedener Lötverfahren gegenüber der Laserschweißtechnik aufzuzeigen. Material und Methode: Zur vergleichenden Werkstoffprüfung wurden gefügte kieferorthopädische Drähte herangezogen, die mittels von vier Lötverfahren sowie zwei …
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Effects of Wire Material, Deflection, and Interbracket Distance on Burstone Bracket Geometry Force Systems
… especially with phase transforming pseudoelastic wires. In clinical situations, where one is attempting to create or predict the force system on brackets, these data should be taken into consideration, especially to avoid inconsistent force systems.</p>