Evaluation of Nickel Ion Release from Orthodontic Wires in Different Types of Artificial Saliva

Abstract

‫اﻟﺨﻼﺻﺔ‬ ‫اﻷﻫﺪاف‬ : ‫ات‬ ‫ﻓﱰ‬ ‫ﰲ‬ ‫و‬ ‫ﳐﺘﻠﻔﺔ‬ ‫اﺻﻄﻨﺎﻋﻴﺔ‬ ‫ﻟﻌﺎب‬ ‫ﰲ‬ ‫اﻷﺳﻨﺎن‬ ‫ﺗﻘﻮﱘ‬ ‫ﻟﻘﻮس‬ ‫ﻟﻠﺼﺪأ‬ ‫اﳌﻘﺎوم‬ ‫اﻟﻔﻮﻻذ‬ ‫اﺳﻼك‬ ‫ﻣﻦ‬ ‫اﺣﺔ‬ ‫اﳌﺰ‬ ‫اﻟﻨﻴﻜﻞ‬ ‫أﻳﻮﻧﺎت‬ ‫ﻛﻤﻴﺔ‬ ‫ﻗﻴﺎس‬ ‫إﱃ‬ ‫اﺳﺔ‬ ‫اﻟﺪر‬ ‫ﻫﺬﻩ‬ ‫ﺗﺪف‬ ‫ﳐﺘﻠﻔﺔ.‬ ‫زﻣﻨﻴﺔ‬ ‫اﻟﻌﻤﻞ‬ ‫اﺋﻖ‬ ‫وﻃﺮ‬ ‫اﻟﻤﻮاد‬ ‫ﻏﲑ‬ ‫اﳌﺎء‬ ‫ﳏﻠﻮل‬ ‫ﰲ‬ ‫ﻏﻤﺮﻫﺎ‬ ‫ﰎ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﺑﺄﻗﻄﺎر‬ ‫اﻟﺘﻘﻮﳝﻴﺔ‬ ‫ﻟﻠﺼﺪأ‬ ‫اﳌﻘﺎوم‬ ‫اﻟﻔﻮﻻذ‬ ‫ﻷﺳﻼك‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﻳﺔ‬ ‫ﲡﺎر‬ ‫اع‬ ‫اﻧﻮ‬ ‫ﺳﺖ‬ ‫اﺳﺔ‬ ‫اﻟﺪر‬ ‫ﻫﺬﻩ‬ ‫ﴰﻠﺖ‬ : ) ‫اوﺣﺖ‬ ‫ﺗﺮ‬ ‫اﻟﻐﻤﺮ‬ ‫ات‬ ‫وﻓﱰ‬ ‫ﳐﺘﻠﻒ‬ ‫اﺻﻄﻨﺎﻋﻲ‬ ‫ﻟﻌﺎب‬ ‫اع‬ ‫اﻧﻮ‬ ‫ﺛﻼث‬ ‫و‬ ‫اﳌﺘﺄﻳﻦ‬ 7 ، 14 ‫و‬ 30 )) ‫اﻟﺬري‬ ‫اﻻﻣﺘﺼﺎص‬ ‫)ﻣﻄﻴﺎف‬ ‫اﻓﻴﺖ‬ ‫اﳉﺮ‬ ‫ﻓﺮن‬ ‫اﺳﺘﺨﺪام‬ ‫و‬ ‫ﻳﻮﻣﺎ(‬ AAS ‫ﻟﺘﺤﺪﻳﺪ‬ ( . ‫اﳌﺘﺤﺮرة‬ ‫اﻟﻨﻴﻜﻞ‬ ‫أﻳﻮﻧﺎت‬ ‫ﻛﻤﻴﺔ‬ ‫اﻟﻨﺘﺎﺋﺞ‬ ‫ﺳﻠﻚ‬ ‫ﻋﺪا‬ ‫ﻣﺎ‬ ‫اﻷﺳﻼك‬ ‫اع‬ ‫أﻧﻮ‬ ‫ﳉﻤﻴﻊ‬ ‫اﻟﻨﻴﻜﻞ‬ ‫أﻳﻮن‬ ‫ﲢﺮر‬ ‫ﰲ‬ ‫ﻛﺒﲑة‬ ‫أﳘﻴﺔ‬ ‫ﻫﻨﺎك‬ ‫أن‬ ‫اﻹﺣﺼﺎﺋﻲ‬ ‫اﻟﺘﺤﻠﻴﻞ‬ ‫أﻇﻬﺮ‬ : 4 ‫و‬ 5 ‫ﻗﻴﻤﺔ‬ ‫ﺗﻌﻄﻲ‬ ‫اﻟﱵ‬ ‫ﻣﻌﻨﻮﻳﺔ‬ ‫ﻏﲑ‬ 2.45 ‫و‬ ABSTRACTAims: To evaluate the amount of nickel ion release from stainless steel orthodontic wires in different artificial saliva and in different time periods. Materials and Methods: This study included six different commercial stainless steel orthodontic wires with different diameters. They were immersed in deionized water (control) and three different artificial saliva, the immersion periods included 7, 14, and 30 days. A graphite-furnace atomic absorption spectrometer (AAS) was used to determine the amount of nickel ions release. Results: The statistical analysis showed that there is a highly significance in the release of nickel ions for all types of wire except wires 0.18, and 0.16 x 0.22 which gave non-significant 2.45 and 1.37 respectively, and the time period of immersion had no significant effect in all types of wire. Conclusions: The release of nickel ions was influenced by the types of wire and the surface areas that in contact with immersion in solution, in addition to the composition of the orthodontic wires, but this were not proportional to the content of metal in the wire.

Experimental Investigation of the Biofunctional Properties of Nickel–Titanium Alloys Depending on the Type of Production

“…The present research established that the NiTi-2 alloy, which has a more stable microstructure with smaller grains and a higher grain number, is more biologically resistant. It also showed that Ni ion release was not proportional to the content of nickel in the alloy samples, a finding that is in accordance with previous investigations [ 34 , 39 ].…”

“…However, various studies have demonstrated lower corrosion resistance of these alloys in acidic solutions and chloride-containing environments [ 31 , 33 , 34 ]. In general, it is well documented that the corrosion potential increases as the pH value decreases [ 33 , 34 , 35 ]. The acidic environment had a significant effect on increasing the release of toxic ions from both groups of samples.…”

A brief overview and application of Nickel-Titanium shape memory alloy in dentistry

“…Moreover, different parts of the human body vary significantly in oxygen concentrations and pH values. Various studies have demonstrated lower corrosion resistance of these alloys in acidic solutions and chloride-containing environments [14][15][16]. In general, it is well documented that the corrosion potential increases as the pH value decreases [17].…”

The effect of fluoride gel on tensile properties, surface morphology and chemical composition of two types of orthodontic wires (an in-vitro study)

“…In turn, these elements may cause allergic reactions and potential cytotoxic effects that may jeopardize the health of patients. [23][24][25] Thus, extra information regarding the effect of APF gel on the surface characteristics of orthodontic wires is important. Furthermore, advance imaging techniques such as Energy Dispersive X-Ray Spectroscopy (EDX) which is the most standard and consistent method in the field of analytical electron microscopy can provide more detailed information about the effect of APF gel on orthodontic wires.…”