Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements
Objectives: The aim of the study was to examine how probiotic supplements affect the corrosion stability of orthodontic archwires made of nickel-titanium alloy (NiTi). Materials and Methods: Ni-Ti archwires (0.508x0.508 and having the length of 2.5 cm) were tested. The archwires (composition Ni=50....
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
University of Zagreb. School of Dental Medicine
2017-01-01
|
Series: | Acta Stomatologica Croatica |
Subjects: | |
Online Access: | http://hrcak.srce.hr/file/281443 |
id |
doaj-8699af97babb436cabbdddb1b4de6765 |
---|---|
record_format |
Article |
spelling |
doaj-8699af97babb436cabbdddb1b4de67652020-11-24T22:39:48ZengUniversity of Zagreb. School of Dental MedicineActa Stomatologica Croatica0001-70191846-04102017-01-01514316325Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic SupplementsGianluca Turco0Luca Contardo1Nikolina Leona Serdarević2Helena Otmačić Ćurković3Stjepan Špalj4Ines Musa Trolić5Department of Medical, Surgical and Health Sciences, Laboratory for Dental Biomaterials, University of Trieste, ItalyDepartment of Medical, Surgical and Health Sciences, Laboratory for Dental Biomaterials, University of Trieste, ItalyDepartment of Electrochemistry Faculty of Chemical Engineering and Technology, University of Zagreb CroatiaDepartment of Electrochemistry Faculty of Chemical Engineering and Technology, University of Zagreb CroatiaDepartment of Orthodontics, School of Medicine, University of Rijeka, Rijeka, CroatiaPhD student, School of Dental Medicine University of Zagreb, Zagreb, CroatiaObjectives: The aim of the study was to examine how probiotic supplements affect the corrosion stability of orthodontic archwires made of nickel-titanium alloy (NiTi). Materials and Methods: Ni-Ti archwires (0.508x0.508 and having the length of 2.5 cm) were tested. The archwires (composition Ni=50.4%, Ti=49.6%) were uncoated, nitrified and rhodium coated. Surface microgeometry was observed by using scanning electron microscope and surface roughness was measured by profilometer through these variables: roughness average, maximum height and maximum roughness depth. Corrosion was examined by electrochemical method of cyclic polarisation. Results: Rhodium coated alloy in saliva has significantly higher general corrosion in saliva than nitrified alloy and uncoated alloy, with large effect size (p=0.027; η2=0.700). In the presence of probiotics, the result was even more pronounced (p<0.001; η2=0.936). Probiotic supplement increases general and localised corrosion of rhodium coated archwire and slightly decreases general corrosion and increases localised corrosion in uncoated archwire , while in the case of nitrified archwire the probability of corrosion is very low. The differences in surface roughness between NiTi wires before corrosion are not significant. Exposure to saliva decreases roughness average in rhodium coated wire (p=0.015; η2=0.501). Media do not significantly influence surface microgeometry in nitrified and uncoated wires. Conclusion: Probiotic supplement affects corrosion depending on the type of coating of the NiTi archwire. It increases general corrosion of rhodium coated wire and causes localised corrosion of uncoated and rhodium coated archwire. Probiotic supplement does not have greater influence on surface roughness compared to that of saliva.http://hrcak.srce.hr/file/281443Orthodontic WiresCorrosion, ProbioticsAlloysSurface Properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gianluca Turco Luca Contardo Nikolina Leona Serdarević Helena Otmačić Ćurković Stjepan Špalj Ines Musa Trolić |
spellingShingle |
Gianluca Turco Luca Contardo Nikolina Leona Serdarević Helena Otmačić Ćurković Stjepan Špalj Ines Musa Trolić Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements Acta Stomatologica Croatica Orthodontic Wires Corrosion, Probiotics Alloys Surface Properties |
author_facet |
Gianluca Turco Luca Contardo Nikolina Leona Serdarević Helena Otmačić Ćurković Stjepan Špalj Ines Musa Trolić |
author_sort |
Gianluca Turco |
title |
Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements |
title_short |
Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements |
title_full |
Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements |
title_fullStr |
Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements |
title_full_unstemmed |
Corrosion of Nickel-Titanium Orthodontic Archwires in Saliva and Oral Probiotic Supplements |
title_sort |
corrosion of nickel-titanium orthodontic archwires in saliva and oral probiotic supplements |
publisher |
University of Zagreb. School of Dental Medicine |
series |
Acta Stomatologica Croatica |
issn |
0001-7019 1846-0410 |
publishDate |
2017-01-01 |
description |
Objectives: The aim of the study was to examine how probiotic supplements affect the corrosion stability of orthodontic archwires made of nickel-titanium alloy (NiTi). Materials and Methods: Ni-Ti archwires (0.508x0.508 and having the length of 2.5 cm) were tested. The archwires (composition Ni=50.4%, Ti=49.6%) were uncoated, nitrified and rhodium coated. Surface microgeometry was observed by using scanning electron microscope and surface roughness was measured by profilometer through these variables: roughness average, maximum height and maximum roughness depth. Corrosion was examined by electrochemical method of cyclic polarisation. Results: Rhodium coated alloy in saliva has significantly higher general corrosion in saliva than nitrified alloy and uncoated alloy, with large effect size (p=0.027; η2=0.700). In the presence of probiotics, the result was even more pronounced (p<0.001; η2=0.936). Probiotic supplement increases general and localised corrosion of rhodium coated archwire and slightly decreases general corrosion and increases localised corrosion in uncoated archwire , while in the case of nitrified archwire the probability of corrosion is very low. The differences in surface roughness between NiTi wires before corrosion are not significant. Exposure to saliva decreases roughness average in rhodium coated wire (p=0.015; η2=0.501). Media do not significantly influence surface microgeometry in nitrified and uncoated wires. Conclusion: Probiotic supplement affects corrosion depending on the type of coating of the NiTi archwire. It increases general corrosion of rhodium coated wire and causes localised corrosion of uncoated and rhodium coated archwire. Probiotic supplement does not have greater influence on surface roughness compared to that of saliva. |
topic |
Orthodontic Wires Corrosion, Probiotics Alloys Surface Properties |
url |
http://hrcak.srce.hr/file/281443 |
work_keys_str_mv |
AT gianlucaturco corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements AT lucacontardo corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements AT nikolinaleonaserdarevic corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements AT helenaotmaciccurkovic corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements AT stjepanspalj corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements AT inesmusatrolic corrosionofnickeltitaniumorthodonticarchwiresinsalivaandoralprobioticsupplements |
_version_ |
1725707573202518016 |