Laser welding of NiTi orthodontic archwires for selective force application |
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Authors: | P Sevilla F Martorell C Libenson J A Planell F J Gil |
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Affiliation: | 1. CREB, Dept. Ciencia de los Materiales e Ingeniería Metalúrgica, ETSEIB, Universidad Politécnica de Catalu?a, Av. Diagonal 647, Barcelona, 08028, Spain 2. Laboratorios F. Martorell, Barcelona, Spain 3. Clínica Gala Placidia, Barcelona, Spain
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Abstract: | Conventional superelastic orthodontic wires are arch-shaped, have the same mechanical properties all along their length and
are used to correct the position of teeth. The disadvantage of these archwires is that there are different types of teeth
in the mouth and different forces are therefore needed to rectify their position. The aim of this work was to laser weld several
types of NiTi orthodontic wires that had different chemical compositions and superelastic properties, in order to adjust their
properties to different parts of the mouth. Microstructural changes, transformation stresses and temperatures, variations
in corrosion behaviour and ion release were studied in the welded wires. |
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