2020 Fiscal Year Final Research Report
Application to orthodontic wire of Allergy-free and highly aesthetic PEEK resin composite
| Project/Area Number |
19K19279
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 57070:Developmental dentistry-related
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| Research Institution | Tsurumi University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | PEEK複合樹脂 / 矯正用ワイヤー |
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| Outline of Final Research Achievements |
Now metal alloys are commonly used as orthodontic arch wires. However, metal alloy arch wires have the disadvantages of esthetics and metal allergies. Alternative materials to metal alloys are needed in orthodontic treatments. PEEK is known as an esthetic high strength polymer. So we evaluated the load-deflection characteristics of PEEK wires in addition to their frictional properties and reported that PEKK wire will be applicable for orthodontic treatment. In this study, we tried to evaluate the composite PEEK wire which have higher strength than PEEK as an orthodontic wire. GF-PEEK wire showed the similar load-deflection curve to that of control NI-Ti or PEEK wire. Maximum load of the GF-PEEK was almost the same as that of Ni-Ti. The bending properties of GF-PEEK wire was same as those of Ni-To or PEEK wire. It is suggested that GF-PEEK with higher strength has a possibility for alternative orthodontic wire to metal.
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| Free Research Field |
歯科矯正学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究はPEEK樹脂ワイヤーを様々な治療段階においても使用できるように強度の調整を行うため高機能樹脂PEEK樹脂にガラス繊維やフッ素樹脂を添加する。無添加PEEK樹脂に充填物を加えることにより剛性が上り、弾性も変化する。また機械的強度も上り、応力緩和試験においても応力の保持率も向上することが予想される。様々な金属の代替として複合PEEK樹脂を使用することが可能になれば金属アレルギーにより矯正治療を諦めていた患者にも治療が可能となる。また審美的なアドバンテージを得る事で、装置が目立つことで治療を敬遠していた患者への矯正治療の普及へと繋がる。
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