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77146

Evaluation of ultimate tensile strength and surface roughness of NiTi and CuNiTi orthodontic archwires after recycling procedures

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Last updated: 04 Jan 2025

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Abstract

 
Aim: The aim of this study is to evaluate and compare the influence of 2 types of sterilization/disinfection procedures on the tensile strength and surface topography of two orthodontic wires (Nickel-titanium (NiTi), and cupper Nickel-titanium (CuNiTi)). Materials and Methods: Sample comprised of 140 wires(100 new 0.017×0.025″ Ovoid rectangular, and 40 used 0.017×0.025″ Ovoid rectangular wires). They were randomly divided into 7 groups according to method and number of sterilization cycles,each group equally divided into 2 subgroups according to wire composition. Surface topography was examined with scanning electron microscope (SEM) and ultimate tensile strength (UTS) was tested using universal testing machine after sterilization and disinfection of the experimental groups. Result: SEM images revealed an increase in surface irregularities in CuNiTi and NiTi wires after sterilization. UTS of CuNiTi and NiTi wires after one cycle of autoclave sterilization procedure, or chemical sterilization for one or two cycles were not significantly different when compared with the control group. NiTi and CuNiTi archwires were affected after two cycles of autoclave sterilization.The mean UTS of clinically used and recycled archwires increased significantly when compared with the control group. Used and recycled archwires were affected considerably by autoclave sterilization Conclusion: Autoclave sterilization and chemical sterilization solution can be recommended for sterilization of orthodontic wires for one cycle.
 

DOI

10.21608/eos.2018.77146

Keywords

Nickel-titanium, cupper Nickel-titanium, sterilization, surface topography, tensile strength

Authors

First Name

Yasmine

Last Name

Sayed

MiddleName

-

Affiliation

Orthodontic Department, Faculty of Dentistry, Pharos University, Alexandria, Egypt*

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Orcid

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First Name

Khaled

Last Name

Aboulazm

MiddleName

-

Affiliation

Head of orthodontic department, Faculty of Dentistry, Pharos University, Alexandria, Egypt

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City

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Orcid

-

First Name

Amal

Last Name

Fahmy

MiddleName

-

Affiliation

Dental biomaterials department, Faculty of Dentistry, Pharos University, Alexandria, Egypt

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Orcid

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Volume

54

Article Issue

December 2018

Related Issue

11546

Issue Date

2018-12-01

Receive Date

2018-05-09

Publish Date

2018-12-08

Page Start

47

Page End

57

Print ISSN

1110-435X

Online ISSN

2812-5258

Article File

EOS_Volume 54_Issue December 2018_Pages 47-57.pdf

PDF . 475.3kB

Link

https://eos.journals.ekb.eg/article_77146.html

Detail API

https://eos.journals.ekb.eg/service?article_code=77146

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5

Type

Original Article

Type Code

1,120

Publication Type

Journal

Publication Title

Egyptian Orthodontic Journal

Publication Link

https://eos.journals.ekb.eg/

MainTitle

Evaluation of ultimate tensile strength and surface roughness of NiTi and CuNiTi orthodontic archwires after recycling procedures

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Article

Created At

22 Jan 2023