Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13585
Title: Design and development of composite orthodontic archwires alternative to metallic wires
Authors: RENUGA GOPAL
Keywords: aesthetic, composite, orthodontic archwire, tube-shrinkage, arch-shape, flexible
Issue Date: 8-Dec-2003
Source: RENUGA GOPAL (2003-12-08). Design and development of composite orthodontic archwires alternative to metallic wires. ScholarBank@NUS Repository.
Abstract: Composite orthodontic wires are being developed to improve the aesthetic appeal of orthodontic fixed appliances. A new technique based on tube shrinkage is proposed for the fabrication of composite archwires. Compared with a traditional pultrusion method, this new technique can avoid any fiber damage during the fabrication and can provide the archwire with the required arch-shape in its final clinical usage, without the need to perform beta-staging. The flexible die has the capability to shrink on heat application to squeeze out excess resin material, ensuring a more complete impregnation of the fiber reinforcement by the resin, thereby improving the physical and mechanical properties of the wire. Two prototype archwires have been fabricated using this technique, (a) fiberglass/epoxy and (b) fiberglass/dental resin and their mechanical performance was studied in the dry and wet states. Results have shown that the mechanical performance of the prototype composite archwires is comparable to that of a clinical Ni-Ti archwire.
URI: http://scholarbank.nus.edu.sg/handle/10635/13585
Appears in Collections:Master's Theses (Open)

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02Acknowledgements.pdf52.05 kBAdobe PDF

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03Table_of_contents.pdf57.9 kBAdobe PDF

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04Summary.pdf51.27 kBAdobe PDF

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05List_of_Publications_Figures_Tables.pdf156.26 kBAdobe PDF

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06Chapter_1.pdf392.05 kBAdobe PDF

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13Chapter_8.pdf70.36 kBAdobe PDF

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14References.pdf89.47 kBAdobe PDF

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15Appendices.pdf755.17 kBAdobe PDF

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