Cited by 106Polymer composites and self-healingAdvanced Materials and MechanicsOrthodontics and Dentofacial Orthopedics

Application of shape memory polyurethane in orthodontic

Jung, Yong Chae, Cho, Jae Whan·2010·Journal of Materials Science: Materials in Medicine

Abstract

A shape memory polymer wire for orthodontic application was prepared by melt-spinning of polyurethane block copolymer (PU) which was synthesized in a two-step process from a reaction of 4,4'-methylene bis(phenylisocyanate), poly(ε-caprolactone)diol (PCL), and 1,4-butanediol. An orthodontic test using the PU wire was carried out in an orthodontic model with a metal bracket. High shape recovery force of 70 gf for PU wire at 40 wt% hard segment content could be preserved for even 1 month after a shape recovery force test at a constant temperature of 50°C. The shape recovery force decreased exponentially during the initial 2 h, but reached an equilibrium shape recovery force of 50 gf after about 20 days. It was found that this shape recovery force was sufficient to correct misaligned teeth in the orthodontic test. The shape memory PU wire possesses strong potential as a novel orthodontic appliance with esthetically appealing appearance.

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Crossref · 10.1007/s10856-008-3538-7

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18 of 18 references verified0 citation errors · 0 not checkable

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  • In a dental arch model, only a much too fast shape recovery has been realized that would not allow proper remodeling of bone around the roots of the teeth.

    “However, in a dental arch model, so far only a much too fast shape recovery has been realized that would not allow proper remodeling of bone around the roots of the teeth.”
  • In a thermoplastic SMP containing PCL building blocks, maintenance of the wire's recovery forces over months was observed at least in a water-free environment.

    “In the present example with a thermoplastic SMP containing PCL building blocks, a maintenance of the wire's recovery forces over months was observed at least in a water-free environment.”

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Authors
Jung, Y. C., & Cho, J. W.
Affiliations
Konkuk University (KR)
Corresponding author
Cho, Jae Whan
Venue
Journal of Materials Science: Materials in Medicine
Published
2008-07-24
Volume
21
Issue
10
Pages
2881-2886
ISSN
  • 0957-4530 (ISSN-L)
  • 1573-4838
OpenAlex
W1967759754
Cited by
106
References
19
Citations by year
2026: 4 · 2025: 6 · 2024: 6 · 2023: 10 · 2022: 12 · 2021: 9 · 2020: 9 · 2019: 10 · 2018: 9 · 2017: 5 · 2016: 3 · 2015: 6 · 2014: 5 · 2013: 4 · 2012: 4
FWCI
1.15
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Materials Science Materials in Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Health Sciences › Dentistry › Orthodontics › Orthodontics and Dentofacial Orthopedics
Keywords
shape memory polyurethane, orthodontic appliances, polyurethane block copolymers, polycaprolactone, 1,4-butanediol, melt spinning, hard segment content, metal brackets
MeSH terms
Dental Materials, Humans, Malocclusion, Materials Testing, Orthodontic Wires, Polyurethanes, Stress, Mechanical, Orthodontic Appliance Design, Spectroscopy, Fourier Transform Infrared, In Vitro Techniques

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