| dc.description.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. | en_US |
