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All Journal Padjadjaran Journal of Dentistry Journal of Health and Dental Sciences
Nety Trisnawaty, Nety
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Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Nickel and chromium ions release from stainless steel orthodontic bracket immersed in green betel leaf extract: an in vitro study Fathiya, Aufa Nida; Trisnawaty, Nety; Anisyah, Ika
Padjadjaran Journal of Dentistry Vol 36, No 3 (2024): November 2024
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol36no3.55497

Abstract

Introduction: Corrosion on stainless steel brackets can occur as a result of using green betel leaves in the oral cavity because they contain a protein that functions as an electrolyte medium, affecting the release of nickel and chromium ions as an early sign of corrosion. The purpose of this study was to analyze the amount of nickel and chromium ions released from a stainless steel orthodontic bracket due to immersion in 25% green betel leaf extract. Methods: The type of research used was laboratory-experimental with a post-test control group design. Tests were carried out on 27 samples, which were divided into three test groups. Brackets were soaked in 25% green betel leaf extract, artificial saliva, and a mixture of 25% green betel leaf extract and artificial saliva for 48 hours and measured using the Atomic Absorption Spectroscopy (AAS). Data analysis in this study using the Shapiro-Wilk normality test and the homogeneity test using the Levene test. The normality and homogeneity test results were fulfilled, thereby permitting the continuation of the analysis with parametric tests, namely the one-way ANOVA test for nickel ions, followed by the Post Hoc Tukey test for nickel ions and the independent T-test for chromium ions. Results: The group soaked in 25% green betel leaf extract showed the highest nickel ion release (16.37 mg/kg), while the highest chromium ion release (18.03 mg/kg) was observed in the group exposed to the mixture of 25% green betel leaf extract and artificial saliva. One-way ANOVA results revealed a significant effect of soaking in green betel leaf extract on nickel ion release (p=0.001), confirmed by Tukey’s Post Hoc test (p=0.001). The T-test indicated significant differences in chromium ion release (p=0.001). Conclusion: Green betel leaf extract has an effect on the release of nickel and chromium ions in stainless steel orthodontic brackets.
EFFECTIVENESS OF OOLONG TEA LEAVES EXTRACT AS A CORROSION INHIBITOR FOR ORTHODONTICS STAINLESS STEEL WIRE Trisnawaty, Nety; Anisya Putri, Cahyaning
Journal of Health and Dental Sciences Vol. 4 No. 1 (2024): Journal of Health and Dental Sciences
Publisher : Fakultas Kedokteran Gigi Unjani

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Abstract

Stainless steel orthodontic wire is the type most often used in the oral environment for long periods, which can potentially generate corrosion. The occurrence of corrosion will cause a hypersensitivity reaction caused by the wire components interacting with the oral environment. One of the efforts that can be used to reduce the corrosion rate is to use organic inhibitors containing antioxidants found in oolong tea leaves. This study aimed to determine the effectiveness of oolong tea leaves as a corrosion inhibitor on stainless steel orthodontic wires. This study is a laboratory experimental study with a post-test-only control group design using stainless steel orthodontic wire with a length of 4 cm and a diameter of 0.41 mm in as many as 24 samples. The samples were divided into four groups; one treatment group was artificial saliva, and the other three groups were a mixture of artificial saliva given oolong tea leaf extract with concentrations of 6.25%, 12.5%, and 25%, respectively. The measurement of the corrosion rate was carried out using the weight loss method. Then, the orthodontic wire was characterized after immersion using a Scanning Electron Microscope (SEM). The results of the data were analyzed using the Kruskall-Wallis test. The results showed that the highest corrosion rate was found in the artificial saliva group that was not treated at all, and the corrosion rate with treatment decreased. The group with oolong tea leaf extract with a concentration of 25% showed the best results in inhibiting the corrosion rate of wire. In conclusion, oolong tea leaf extract has proved to be an effective corrosion inhibitor for stainless steel orthodontic wire. DOI : 10.54052/jhds.v4n1.p1-14
Co-Authors Anisya Putri, Cahyaning Fathiya, Aufa Nida Ika Anisyah, Ika