Influence of aesthetic coating on the load-deflection ratio of nickel–titanium archwires

Aim: To assess the influence of aesthetic surface coating on load-deflection ratios in nickel-titanium (NiTi) orthodontic wires compared with uncoated wires. Methods: NiTi wires (0.016") from four different manufacturers (Morelli, Sorocaba, SP, Brazil; TP, La Porte, IN, USA; Eurodonto, Curitiba...

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Bibliographic Details
Published in:	Brazilian journal of oral sciences Vol. 15; no. 4; p. 293
Main Authors:	Rego, Marcus Vinicius Neiva Nunes do, Araújo, Gislayne Maria Mesquita de, Martinez, Elizabeth Ferreira, Lima, Kássio Rafael de Sousa, Fortes, Pio Thiago Feitosa, Leal, Leanne Matias Portela
Format:	Journal Article
Language:	English
Published:	Universidade Estadual de Campinas 20-09-2017
Subjects:	Orthodontic wires. Aesthetics. Alloys
Online Access:	Get full text
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Summary:	Aim: To assess the influence of aesthetic surface coating on load-deflection ratios in nickel-titanium (NiTi) orthodontic wires compared with uncoated wires. Methods: NiTi wires (0.016") from four different manufacturers (Morelli, Sorocaba, SP, Brazil; TP, La Porte, IN, USA; Eurodonto, Curitiba, PR, Brazil; Ortho Organizers, San Marcos, CA, USA) were divided into eight groups, according to presence or absence of coating: group 1, Morelli coated wire; group 2, Morelli uncoated; group 3, TP coated; group 4, TP uncoated; group 5, Eurodonto coated; group 6, Eurodonto uncoated; group 7, Ortho Organizers coated; group 8, Ortho Organizers uncoated. To determine the load-deflection ratio, a three-point bending test was performed in a AGS-X 250 KN (Shimadzu) universal testing machine. Results: The results showed that aesthetic coatings did not influence load-deflection ratio in NiTi orthodontic wires at 1-mm and 2-mm activation. However, comparison across the four tested brands revealed that Eurodonto coated wires exhibited the greatest force levels at 1-mm, 2-mm, and 3-mm deflection. At 3-mm deflection, Ortho Organizers coated wires exhibited lower force levels than all other tested brands, except for TP wires. Conclusions: We conclude that the load-deflection ratio of NiTi wires was not influenced significantly by aesthetic coatings, especially at lower activations.
ISSN:	1677-3225 1677-3225
DOI:	10.20396/bjos.v15i4.8650043