Abstract:
:To compare force levels obtained from glass fibre-reinforced composite (FRC) archwires. Specifically, FRC wires were compared with polymer matrices having different dimethacrylate monomer compositions. FRC material (E-glass provided by Stick Tech Ltd, Turku, Finland) with continuous unidirectional glass fibres and four different types of dimethacrylate monomer compositions for the resin matrix were tested. Cross-sectionally round FRC archwires fitting into the 0.3 mm slot of a bracket were divided into 16 groups with six specimens in each group. Glass fibres were impregnated by the manufacturer, and they were initially light-cured by hand light-curing unit or additionally post-cured in light-curing oven. The FRC archwire specimens were tested at 37°C according to a three-point bending test in dry and wet conditions using a span length of 10 mm and a crosshead speed of 1.0 mm/minute. The wires were loaded until final failure. The data were statistically analysed using analysis of variance (ANOVA). The dry FRC archwire specimens revealed higher load values than water stored ones, regardless of the polymer matrix. A majority of the FRC archwires showed higher load values after being post-cured. ANOVA revealed that the polymer matrix, curing method, and water storage had a significant effect (P < 0.05) on the flexural behaviour of the FRC archwire. Polymer matrix composition, curing method, and water storage affected the flexural properties and thus, force level and working range which could be obtained from the FRC archwire.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Ohtonen J,Vallittu PK,Lassila LVdoi
10.1093/ejo/cjr128subject
Has Abstractpub_date
2013-02-01 00:00:00pages
110-4issue
1eissn
0141-5387issn
1460-2210pii
cjr128journal_volume
35pub_type
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journal_title:European journal of orthodontics
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更新日期:2011-04-01 00:00:00
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更新日期:2005-04-01 00:00:00
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doi:10.1093/ejo/25.3.217
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更新日期:2007-04-01 00:00:00
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更新日期:1997-02-01 00:00:00
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journal_title:European journal of orthodontics
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更新日期:1999-10-01 00:00:00
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journal_title:European journal of orthodontics
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更新日期:2008-02-01 00:00:00
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doi:10.1093/ejo/16.4.265
更新日期:1994-08-01 00:00:00
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更新日期:2014-10-01 00:00:00
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doi:10.1093/ejo/21.2.167
更新日期:1999-04-01 00:00:00
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更新日期:2017-10-01 00:00:00
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更新日期:1996-08-01 00:00:00
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更新日期:1996-12-01 00:00:00
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更新日期:2013-08-01 00:00:00
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journal_title:European journal of orthodontics
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更新日期:2008-08-01 00:00:00
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更新日期:2005-02-01 00:00:00
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更新日期:2015-02-01 00:00:00
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更新日期:2012-06-01 00:00:00
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更新日期:2004-02-01 00:00:00
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更新日期:2017-08-01 00:00:00
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journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjl064
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVES:The objective of the study was to evaluate the impact of temporomandibular joint (TMJ) arthritis on the functional disability and quality of life in patients affected by juvenile idiopathic arthritis (JIA). MATERIALS AND METHODS:Sixty-two consecutive patients with JIA with or without TMJ arthritis and 35 he...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjy034
更新日期:2019-03-29 00:00:00