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Sanny, Sanny Ardhy
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering

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Effect of corrosion rate and hardness of titanium in Kokubo’s simulated body fluid for orthodontic applications Sanny, Sanny Ardhy; Islahuddin, Islahuddin; Meiki, Meiki Eru Putra; riza, Muhammad Riza Ardiyanto
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/38n0c342

Abstract

Titanium and its alloys are widely recognized as preferred materials for dental implants, particularly in orthodontic applications, owing to their superior corrosion resistance and mechanical performance compared with stainless steel. However, certain limitations remain. In acidic environments, titanium’s corrosion resistance tends to decline. This issue is of particular relevance in West Sumatra, where local dietary habits include frequent consumption of acidic and high-fat foods such as rendang, gulai and various fried dishes. Hence, it is important to evaluate the corrosion behavior of titanium and its alloys under acidic conditions. In this study, four titanium-based materials were investigated: Ti-12 Cr, TNTZ-ST, Ti-64 ELI (Extra Low Interstitial), and Commercially Pure Titanium (CpTi). Immersion tests were performed in Kokubo’s Simulated Body Fluid (SBF) at pH 5.0 for four exposure periods (1, 2, 3, and 4 weeks). The corrosion rate was determined using the weight loss method. Results revealed that CpTi exhibited the highest corrosion rate (0.0985 mm/y) after 4 weeks, while Ti-12 Cr demonstrated the lowest (0.0515 mm/y). Regarding hardness, CpTi reached the highest value (365 HVN at 1 week), whereas Ti-12 Cr recorded the lowest (130 HVN).
Co-Authors Islahuddin, Islahuddin Meiki, Meiki Eru Putra riza, Muhammad Riza Ardiyanto