中山醫學大學機構典藏 CSMUIR:Item 310902500/20219
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    题名: An Investigation on Mechanical Properties of Esthetic Orthodontic Archwires
    作者: Yang, Po-Yu
    Lee, Tzu-Hsin
    贡献者: 中山醫學大學口腔醫學研究所
    关键词: coated orthodontic archwires;stretch test;immersion test
    日期: 2015-03
    上传时间: 2019-06-04T03:58:05Z (UTC)
    出版者: Journal of Taiwan Association of Orthodontic
    ISSN: 1029-8231
    摘要: The main purpose of this study was to investigate the mechanical properties of Ni-Ti coated orthodontic archwires after surface modification. Universal test machine was used to measure the tensile strength of four groups of coated Ni-Ti wires and uncoated control group. Immersion test was applied for 21 days to discover whether the coating would peel off under friction and brushing after immersion. Student's t-test was used to explore any difference between three groups of coated wires and uncoated conventional wires in mechanical properties. The results showed no statistical difference exists between coated Ni-Ti wires and conventional uncoated wires regarding to tensile strength. The load-displacement curve of both wires looked similar. The coating has no effect on the mechanical strength of the base wire. However, after the 21-day immersion test, the epoxy resin coatings were more likely to peel off than Teflon coatings under friction and brushing (P＜0.05). There was no statistical difference between coated wires and conventional uncoated wires with regard to mechanical tensile strength. While orthodontists can achieve the same expected treatment result with esthetic wires, the issue of preventing coatings from peeling off needs further studies.
    URI: https://ir.csmu.edu.tw:8080/ir/handle/310902500/20219
    關聯: Journal of Taiwan Association of Orthodontic, Vol.26, Issue 3,162-170
    显示于类别:[口腔醫學研究所] 期刊論文

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