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Relationship between friction force and orthodontic force at the leveling stage using a coated wire
MURAYAMA, Masaki; NAMURA, Yasuhiro; TAMURA, Takahiko; IWAI, Hiroaki; SHIMIZU, Noriyoshi.
Afiliação
  • MURAYAMA, Masaki; Nihon University School of Dentistry. Department of Orthodontics. Tokyo. JP
  • NAMURA, Yasuhiro; Nihon University School of Dentistry. Department of Orthodontics. Tokyo. JP
  • TAMURA, Takahiko; Nihon University School of Dentistry. Department of Orthodontics. Tokyo. JP
  • IWAI, Hiroaki; Nihon University School of Dentistry. Department of Orthodontics. Tokyo. JP
  • SHIMIZU, Noriyoshi; Nihon University School of Dentistry. Department of Orthodontics. Tokyo. JP
J. appl. oral sci ; 21(6): 554-559, Nov-Dec/2013. tab, graf
Artigo em Inglês | LILACS | ID: lil-697820
Biblioteca responsável: BR1.1
ABSTRACT
The relationship between orthodontic force and friction produced from an archwire and brackets affects the sliding of the wire in the leveling stage.

Objective:

The purpose of this study was to evaluate the relationship between force and friction in a small esthetic nickel-titanium (Ni-Ti) wire. Material and

Methods:

Five esthetic wires (three coated and two plated) and two small, plain Ni-Ti wires (0.012 and 0.014 inches) were used. We performed a three-point bending test according to ISO 15841 and the drawing test with a dental arch model designed with upper linguoversion of the lateral incisor in the arch (displacements of 0.5, 1.0, 2.0 and 3.0 mm), and evaluated the relationship between them.

Results:

Unloading bending forces of all wires at displacements of less than 1.0 mm were larger than friction forces, but all friction forces at displacements exceeding 2.0 mm were larger than unloading bending forces. The arch likely expands when displacement from the proximal brackets exceeds 1.0 mm. The friction force of a martensite 0.014-inch Ni-Ti wire was significantly greater than those of the other esthetic and austenitic wires.

Conclusions:

A wire with the smallest possible friction force should be used in cases with more than 1.0 mm displacement. .
Assuntos

Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: LILACS Assunto principal: Fios Ortodônticos / Titânio / Desenho de Aparelho Ortodôntico / Fricção / Níquel Tipo de estudo: Estudo de avaliação Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2013 Tipo de documento: Artigo País de afiliação: Japão Instituição/País de afiliação: Nihon University School of Dentistry/JP

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: LILACS Assunto principal: Fios Ortodônticos / Titânio / Desenho de Aparelho Ortodôntico / Fricção / Níquel Tipo de estudo: Estudo de avaliação Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2013 Tipo de documento: Artigo País de afiliação: Japão Instituição/País de afiliação: Nihon University School of Dentistry/JP
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