Year : 2018

Volume : Volume 9

Issue : Issue 3s

Address for correspondence :
Dr. Pooja Hadole.
hadolepooja268@gmail.com

Abstract

Aims:  The metal ion released from the orthodontic appliance may cause allergic reactions particularly nickel and chromium ions. The chances of leaching of metal ions may increase if the appliance is already exposed to soldering or welding procedures, as these procedures remove the protective layer applied on the material.  This study aimed to assess and compare the leaching potential of hazardous metal ions from silver soldered orthodontic appliance and to determine the conformity of the leached metal ions with the established health and safety standards published by WHO.  Materials and Methods: 15 Soldered appliances (Transpalatalarch) were immersed in “Wet mouth” artificial saliva for a period of 24 hours and 20 days. The release of nickel, chromium and lead was determined by using a ICP-OES. Data collected was analyzed using IBM SPSS Data Editor Version 20. Student ‘t’ test was used to compare the difference between various metal ions leached at day 1 and day 20. ‘ANOVA’ test used to compare difference between various metal ions concentrations.  Results: In this study result showed that at day 1 metal ions leaching increases and at day 20 metal ions leaching decreases from silver soldered appliance immersed in artificial saliva. All the metal ions studied,  exceeded safety value published by WHO standards on day 1 and remained so even at day 20   except Ni which was higher on day 1 but dropped down at day 20. Conclusion: From this study, we concluded that leaching of metal ions was seen at day 1 reaching to a toxic level, however this leaching was found to be dramatically lowered at day 20. The potential of metal toxicity carried by this appliance must be carefully considered when advocating this appliance to patients.

Keywords: Artificial saliva, chromium ions, ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer), lead ions, nickel ions, TPA (Transpalatalarch).