People Clipped with Orthodontic Wire made of Ni-Cr Alloy should Avoid Taking Copper Barrel Hard Drink Orally

Abstract

Copper barrel brandy can be taken orally with dilution using bisleri water or soda water and without dilution. People clipped with orthodontic wires may take copper barrel brandy orally, with dilution of without dilution. How far the orthodontic wires will be affected by these items? To find an answer the present research work is undertaken. Ni-Cr alloys have good corrosion resistance. This is attained by arrangement of protective oxide film in oral environment. Corrosion resistance of orthodontic wires prepared from Ni-Cr alloy in artificial saliva in existence & nonexistence of copper barrel, water and soda water has been estimated by polarization technique. It is generally noted that corrosion resistance of Ni-Cr alloy in synthetic saliva in existence of copper barrel, water and soda water decreases. When orthodontic wire made of Ni-Cr is engrossed in simulated saliva, the linear polarization resistance (LPR) value is 792355 Ohmcm.2 When it is submerged in copper barrel + artificial saliva (AS) system, linear polarization resistance (LPR) value decreases to 334516 Ohmcm.2 Corrosion current increases from 5.448 x 10-8 A/cm2 to 14.47 x 10-8 When it is engrossed in soda water + artificial saliva (AS) system, LPR value decreases to 245052