کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5020360 1469068 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Force delivery of NiTi orthodontic arch wire at different magnitude of deflections and temperatures: A finite element study
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Force delivery of NiTi orthodontic arch wire at different magnitude of deflections and temperatures: A finite element study
چکیده انگلیسی

NiTi arch wires are used widely in orthodontic treatment due to its superelastic and biocompatibility properties. In brackets configuration, the force released from the arch wire is influenced by the sliding resistances developed on the arch wire-bracket contact. This study investigated the evolution of the forces released by a rectangular NiTi arch wire towards possible intraoral temperature and deflection changes. A three dimensional finite element model was developed to measure the force-deflection behavior of superelastic arch wire. Finite element analysis was used to distinguish the martensite fraction and phase state of arch wire microstructure in relation to the magnitude of wire deflection. The predicted tensile and bending results from the numerical model showed a good agreement with the experimental results. As contact developed between the wire and bracket, binding influenced the force-deflection curve by changing the martensitic transformation plateau into a slope. The arch wire recovered from greater magnitude of deflection released lower force than one recovered from smaller deflection. In contrast, it was observed that the plateau slope increased from 0.66 N/mm to 1.1 N/mm when the temperature was increased from 26 °C to 46 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 77, January 2018, Pages 234-241
نویسندگان
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