Pengaruh Obat Kumur Ekstrak Daun Sirih Merah (Piper crocatum) Terhadap Laju Korosi dan Daya Lenting Kawat Ortodonti Nikel Titanium

Abstract

Corrosion of nickel titanium orthodontic wires may compromise their mechanical performance, particularly their resillience. This study aimed to evaluate the corrosion rate and resillience of nickel titanium wires after immersion in artificial saliva, 0.2% chlorhexidine, Total Care green betel leaf mouthwash, and red betel leaf (Piper crocatum) extract mouthwash at concentrations of 1%, 2%, and 3% for 1, 7, and 14 days. This laboratory-based experimental study utilized 72 nickel–titanium wire samples (American Orthodontics®, 0.016-inch diameter, 5 cm length), which were assigned to six immersion groups. All samples were incubated at 37°C; corrosion rates were determined using the weight-loss method, while resillience were evaluated using a Universal Testing Machine. One-way ANOVA revealed significant differences among all treatment groups (p<0.05). Post-hoc LSD and Mann–Whitney tests confirmed significant pairwise differences on days 1, 7, and 14. The findings demonstrate that immersion in the tested solutions results in distinct corrosion rates and resillience of nickel titanium orthodontic wires across all observation periods. The 3% red betel leaf extract mouthwash demonstrated superior effectiveness compared to the other immersion groups in reducing the corrosion rate and maintaining the resilience of nickel–titanium orthodontic wires.