Journal of AdvancedMedical and Dental Sciences Research

Background: The use of stainless steel orthodontic wire can corrode in oral cavity. Corrosion can affect human body and feature of orthodontic wire and this corrosion will release cromium ions. There is an inhibitor can be used to reduce corrosion. Natural ingredient extract inhibitor is usually preferred because it’s not harmful to environment. Starfruit leaf is one of examples of natural inhibitor. This study was aimed to determine the corrosion inhibition effect of starfruit leaf extract on stainless steel orthodontic wire. Material & Methods: This study used 8 samples, each consisting of 2 orthodontic wires with a length of 40 mm and a diameter of 0.4. Eight samples were divided into 2 groups where one group was immersed in artificial saliva solution and the other group was immersed in starfruit leaf extract in 1,3,7 and 14 days. The results was measured by using AAS. Results: The Independent samples t-test showed that a significant differences between groups (p<0,05). Conclusion: Starfruit leaves extract has corrosion inhibition on stainless steel orthodontic wire. Keys words: corrosion, inhibition, star fruit leaf extract, stainlses steel.