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

• Main Authors: Marcus Vinicius Neiva Nunes do Rego (Author), Gislayne Maria Mesquita de Araújo (Author), Elizabeth Ferreira Martinez (Author), Kássio Rafael de Sousa Lima (Author), Pio Thiago Feitosa Fortes (Author), Leanne Matias Portela Leal (Author)
• Format: Book
• Published: Universidade Estadual de Campinas, 2017-09-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

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.

Item Description

10.20396/bjos.v15i4.8650043
1677-3225