Effect of temperature on the orthodontic clinical applications of NiTi closed-coil springs
Author
Llamas-Carreras, José-María
Barrera Mora, José María
Abalos, Camilo
Gil Mur, Francisco Javier
Publication date
2013-07-01ISSN
1698-4447
Abstract
NiTi spring coils were used to obtain large deformation under a constant force. The device consists on a NiTi coil spring, superelastic at body temperature, in order to have a stress plateau during the austenitic retransformation during the unloading. The temperature variations induced changes in the spring force. Objectives: The aim of this study is to investigate the effect of the temperature variations in the spring forces and corrosion behaviour simulating the ingestion hot/cold drinks and food. Study design: The springs were subjected to a tensile force using universal testing machine MTS-Adamel (100 N load cell). All tests were performed in artificial saliva maintained at different temperatures. The corrosion tests were performed according to the ISO-standard 10993-15:2000. Results: The increase in temperature of 18 °C induced an increase in the spring force of 30%. However, when the temperature returns to 37 °C the distraction force recovers near the initial level. After cooling down the spring to 15 °C, the force decreased by 46%. This investigation show as the temperature increase, the corrosion potential shifts towards negative values and the corrosion density is rising. Conclusions: The changes of the temperatures do not modify the superelastic behaviour of the NiTi closed-coil springs. The corrosion potential of NiTi in artificial saliva is decreasing by the rise of the temperatures.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Ortodòncia
Elasticitat
Saliva
Temperatura
Ortodoncia
Elasticidad
Saliva
Temperatura
Orthodontics
Elasticity
Saliva
Temperature
Pages
4
Publisher
Medicina Oral S.L.
Collection
18; 4
Is part of
Medicina Oral, Patologia Oral y Cirugia Bucal
Citation
Espinar-Escalona, Eduardo; Llamas-Carreras, José-María; Barrera-Mora, José-María. Effect of temperature on the orthodontic clinical applications of NiTi closed-coil springs. Medicina Oral, Patologia Oral y Cirugia Bucal, 2013, 18(4), e721-4. Disponible en: <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731104/>. Fecha de acceso: 2 jun. 2020. DOI: 10.4317/medoral.19073.
Grant agreement number
info:eu-repo/grantAgreement/ES/3PN/MAT2009-13547
This item appears in the following Collection(s)
- Odontologia [248]
Rights
© 2013 Medicina Oral S.L. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/3.0/es/