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Influência da pressão dos alicates na rugosidade superficial de fios ortodônticos / Influence of gripping with pliers on the surface rugosity of orthodontic wires
Arias, Carlos Sebastian; Elias, Carlos Nelson; Montalli, Victor Angelo; Barbosa, Jurandir; Basting, Roberta Tarkany.
Affiliation
  • Arias, Carlos Sebastian; Universidad Nacional de Asunción. Facultad de Odontologia. Asunción. PY
  • Elias, Carlos Nelson; Instituto Militar de Engenharia. Laboratório de Biomateriais. BR
  • Montalli, Victor Angelo; SL Mandic. Faculdade de Odontologia. BR
  • Barbosa, Jurandir; SL Mandic. Faculdade de Odontologia. BR
  • Basting, Roberta Tarkany; SL Mandic. Faculdade de Odontologia. BR
Ortho Sci., Orthod. sci. pract ; 16(61): 44-55, 2023. ilus, tab
Article in Portuguese | BBO - Dentistry | ID: biblio-1509244
Responsible library: BR243.1
RESUMO
Resumo Proposição avaliar in vitro a rugosidade superficial de fios ortodônticos antes e após a compressão com pinças ortodônticas. Material E

Métodos:

30 fios 0,014" de níckel-titânio termoativados (Neosentalloy, GAC) e 30 fios 0,019 x 0,025" de aço foram usados nos experimentos. Avaliou-se a rugosidade superficial com rugosímetro (NewViewTM 7100, Zygo), antes e após a compressão com alicate Weingart do lado esquerdo e pinça Mathieu do lado direito (Dentaurum). Foram determinados os parâmetros de rugosidade Ra (µm), Rq (µm), PV (µm), Srmax Iso (nm). Testes estat´siticos Wilcoxon foram realizados para analisar a variação dos parâmetros da rugosidade com nível de confiança de 95% e p<0,05.

Resultados:

Os fios redondos de NiTi apresentaram diferenças significaticas dos parâmetros Ra e Rq antes e após a compressão com pinça Mathieu. O emprego do alicate Weingart não alterou a rugosidade dos fios redondos. Os fios retangulares apresentaram diferenças significativas em todos os parâmetros com uso das duas pinças. As médias das diferenças dos parâmetros entre o alicate Weingart e a pinça Mathieu nos fios redondos, não foram estatisticamente significativos. Os fios retangulares apresentaram maior rugosidade com o emprego do alicate Weingart, com diferenças significativas.

Conclusão:

O uso do alicate tipo Weingart e da pinça tipo Mathieu aumentam a rugosidade dos fios de NiTi e de aço (AU)
ABSTRACT
Abstract Proposition the surface roughness of orthodontic wires was evaluated in vitro before and after gripping with two different orthodontic pliers. Material And

Methods:

Units were made of 30 round heat-activated Nickel Titanium alloy wires 0,014" (Neosentalloy, GAC), and another group with 30 rectangular steel wires 0,019 x 0,025". The surface roughness was evaluated with a rugosimeter (NewViewTM 7100, Zygo), before and after gripping with Weingart plier on the left side and Mathieu plier on the right side (Dentaurum), in addition to the average difference in roughness between groups of the same types of wires with parameters Ra (µm), Rq (µm), PV (µm), Srmax Iso (nm). The variation of parameters with different clamps was evaluated (Wilcoxon test); different alloys by the same clamp, 95% confidence level and p<0.05.

Results:

The round wires showed significant differences (Ra and Rq) before and after being gripped with Mathieu plier. The roughness was higher after being gripped. Weingart pliers and round wires obtained the same results, with greater roughness after being clamped. Rectangular wires showed significant differences in all parameters, with both clamps. The means of the differences in the parameters between the Weingart pliers and the Mathieu forceps on the round wires were not statistically significant. In the rectangular wire, the values between the tweezers showed greater roughness with the grip of the Weingart pliers, with significant differences.

Conclusion:

After securing the orthodontic wires, the Weingart pliers and the Mathieu tweezers increased the roughness parameters (AU)
Subject(s)

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Collection: National databases Database: BBO - Dentistry Main subject: Orthodontic Wires / Surgical Instruments / Statistics, Nonparametric / Tooth Attrition Language: Portuguese Journal: Ortho Sci., Orthod. sci. pract Year: 2023 Document type: Article Institution/Affiliation country: Instituto Militar de Engenharia/BR / SL Mandic/BR / Universidad Nacional de Asunción/PY
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Collection: National databases Database: BBO - Dentistry Main subject: Orthodontic Wires / Surgical Instruments / Statistics, Nonparametric / Tooth Attrition Language: Portuguese Journal: Ortho Sci., Orthod. sci. pract Year: 2023 Document type: Article Institution/Affiliation country: Instituto Militar de Engenharia/BR / SL Mandic/BR / Universidad Nacional de Asunción/PY
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