International Journal of Prosthodontics and Restorative Dentistry

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VOLUME 13 , ISSUE 3 ( July-September, 2023 ) > List of Articles


A Comparative Analysis of Surface Characterization and Corrosion Resistance of Boron Nitride and Aluminum Oxide Coated Titanium Alloy: An In Vitro Study

Sana Sultan, Naveen S Yadav, Puja Hazari, Harsh Mahajan, Kirti Somkuwar, Varsha Verma

Keywords : Aluminum oxide, Boron nitride, Corrosion, Magnetic stirrer, Scanning electron microscopy, Titanium alloy

Citation Information : Sultan S, Yadav NS, Hazari P, Mahajan H, Somkuwar K, Verma V. A Comparative Analysis of Surface Characterization and Corrosion Resistance of Boron Nitride and Aluminum Oxide Coated Titanium Alloy: An In Vitro Study. Int J Prosthodont Restor Dent 2023; 13 (3):123-128.

DOI: 10.5005/jp-journals-10019-1416

License: CC BY-NC 4.0

Published Online: 29-09-2023

Copyright Statement:  Copyright © 2023; The Author(s).


Purpose: This in vitro research was done to evaluate the influence of surface coatings on corrosion behavior of boron nitride (BN) and aluminum oxide (Al2O3) coated implant grade titanium alloy [titanium/Al/vanadium alloy (Ti-6Al-4V)] in artificial saliva. Materials and methods: Disk-shaped implants graded Ti-6Al-4V were divided into three groups, each having 10 samples. Chemical liquid deposition technique was used to coat 10 samples with BN and 10 samples with Al2O3 liquid, and 10 were kept uncoated (control group). Scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX) was performed to check the uniformity of coating. Linear polarization corrosion test was carried out in artificial saliva solution to assess the corrosion behavior of samples. Independent t-test was used to compare the mean scores for coating width. One-way analysis of variance (ANOVA) was used to compare the polarization resistance (Rp) of different groups. Pairwise comparison was done using a post hoc test. Results: Homogenous coatings with mean thicknesses of 13.86 and 14.32 μm and weight% 51.69 and 57.2 of B and AI were found, respectively. At 24 hours, the Rp value in the control group was highest (489.04 kΩ), while at 72 hours, it was lowest (485.54 kΩ) as compared to the test groups, and difference was statistically significant (p = 0.001). At 72 hours, AI-coated samples displayed the highest corrosion resistance value (863.71 kΩ). Conclusion: The results demonstrated that titanium implants can be successfully coated with BN and Al2O3, and this coating improves the corrosion resistance of dental implants.

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