Pengaruh Ekstrak Daun Sirihhijau (Piper Betle L.) Terhadap Gaya Defleksi Kawat Nikel-Titanium

Abstract

Nickel titanium orthodontic wire is a type of wire that is commonly used because of it’s superelasticity nature. Contact between nickel titanium orthodontic wire and materials such as mouthwash can cause changes in the mechanical properties of the wire, one of which is deflection. The research was conducted through laboratory experimental design post-test only control group design. The purpose of this study was to determine the difference in the magnitude of the deflection force on nickel titanium orthodontic wires after immersion in artificial saliva,chlorhexidine 0.2% and green betel leaf extract (Piper betle L.) 2.5%, 5%, 10% for 7 and 14 days. The research sample was 33 nickel titanium orthodontic wires measuring 0.016 inches with a length of 4 cm, 3 of which were used as baseline and 30 samples divided into 10 treatment groups namely artificial saliva,chlorhexidine 0.2% and green betel leaf extract 2.5%, 5%, 10%. Samples were soaked for 7 and 14 days in an incubator with a temperature of 370C. Deflection tested by the method three point bending using tools universal testing machine (UTM). Test analysis results One-Way ANOVA showed that there was a significant difference in deflection force in all groups of nickel titanium orthodontic wire immersion after 7 and 14 days of immersion. Test results Post-Hoc LSD showed that there were significant differences between groups with other groups in all treatment groups. The highest deflection force occurs in the wire after immersion in artificial saliva then green betel leaf extract 2.5%, 5%, 10% and the lowest occurs in immersion chlorhexidine 0.2%. This shows that the lower concentration of green betel leaf extract is better for resulting deflection force.