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All Journal MKGK (Majalah Kedokteran Gigi Klinik) (Clinical Dental Journal) UGM ODONTO Dental Journal Dentino: Jurnal Kedokteran Gigi Dental Journal (Majalah Kedokteran Gigi) Interdental Jurnal Kedokteran Gigi (IJKG) Indonesian Journal of Dental Medicine Indian Journal of Forensic Medicine & Toxicology Jurnal Promotif Preventif INDONESIAN JOURNAL OF MEDICAL ANTHROPOLOGY Odonto dental journal Indonesian Journal of Dentistry Prosiding Seminar Nasional COSMIC Kedokteran Jurnal of Syiah Kuala Dentistry Society
Ida Bagus Narmada
Faculty Of Dental Medicine, Universitas Airlangga, Surabaya
Humanities Biochemistry, Genetics & Molecular Biology Dentistry Environmental Science Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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The effect of the ethanolic extract of African leaves (Vernonia amygdalina Delile) on the corrosion rate and microstructure of stainless steel orthodontic wire Siti Bahirrah; Syafruddin Ilyas; Ida Bagus Narmada; Ameta Primasari; Widya Lestari; Indra; Ervina Sofyanti
Dental Journal (Majalah Kedokteran Gigi) Vol. 58 No. 4 (2025): December
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v58.i4.p376-381

Abstract

Background: Stainless steel orthodontic wire is commonly used in orthodontic treatment but is prone to corrosion; therefore, an inhibitor is required. Purpose: This study aimed to evaluate the effectiveness of the ethanolic extract of African leaves (Vernonia amygdalina Delile) as a corrosion inhibitor for stainless steel wires. Methods: A laboratory experiment with a pre- and post-test control group design was conducted. Samples included one negative control (artificial saliva), one positive control (chlorhexidine), and two treatment groups (ethanolic extract of African leaves at 3.125 mg/mL and 6.25 mg/mL), totaling 28 samples. Immersion lasted 7 days at 37°C. Corrosion rates were measured by weight loss, and microstructural changes were analyzed using a scanning electron microscope. Results: The highest average corrosion rate was observed in the chlorhexidine group (0.98 ± 0.58 mils per year [mpy]), whereas the lowest was in the 6.25 mg/mL extract group (−0.04 ± 0.80 mpy). Scanning electron microscope analysis revealed notable microstructural differences: the artificial saliva group showed long scratches scattered across the surface and localized round porosity; the chlorhexidine group exhibited rough scratches and widespread porosity; in contrast, the African leaves groups displayed minor scratches and a thin layer presumed to be protective. Conclusion: The ethanolic extract of African leaves considerably affects corrosion rates and microstructural changes in stainless steel orthodontic wires.
Co-Authors Achmad Sjafei Ageng Wicaksono Ahmad Yudianto Aldila Rahma Alexander Patera Nugraha Alida Alida Ameta Primasari Ananda Firman Putranto Ananto Ali Alhasyimi Ardani, I Gusti Wahju Arya Brahmanta Bahraini, Fahrisah Nurfadeliah C. Christina DWI RAHMAWATI Edwin Triwidianto Endah Mardiati Endang Joewarini Ervina Sofyanti Ervina Sofyanti Eveline Yulia Darmadi Fahrisah Nurfadeliah Bahraini Farmasyanti, Cendrawasih Andusyana Fitrianto, Ardan Fourier Dzar Eljabbar Latief Fransiska Rima Tallo Gio, Prana Ugiana Hakim, Ailsa Marvalodya Haryono Utomo Herniyati I Gusti Aju Wahju Ardani I. G. A. Wahju Ardani Iman, Dimas Indayani, Natalya Indra Kuntaman Kuntaman Lucynda, Lucky Manurung, Prans Samuel Antony Maria Purbiati Marya, Anand Nabilla Vidyazti Rishandari Prasetyo Natalya Tantri Sudarno Niken Merrystia Noor, Tengku Natasha Eleena binti Tengku Ahmad Nugroho, Dimas Iman Primadewi, Theresia Putra, Ramadhan Hardani Putri Intan Sitasari Putri Intan Sitasari Raditya, Ryan Ramadhani, Fakhma Zakki Ramadhani, Vanda Ratna Nurlia Alfiandini Regita Cahyani, Nafansya Sanjaya, Maria Laurentia Shali Wikynikta Purnomo Siswantoro, Edwin R Sitasari, Putri Intan Siti Bahirrah SOETJIPTO . Suhartini Sutjipto Sutjipto Syafruddin Ilyas Thalca Hamid Wahyuni Dyah Parmasari, Wahyuni Dyah Widya Lestari Winoto, Ervina Restiwulan Yessy Andriani Fauziah Yuli Setiyorini Zahreni Hamzah Zulkarnain, Ahmad Alfan Surya Dilaga