Interfacial Bonding of Plasma-coated Hydroxyapatite on Titanium and Ti-6Al-4V

Kotian, Ravindra and Madhyastha, Prashanthi S and Rao, Prasad (2018) Interfacial Bonding of Plasma-coated Hydroxyapatite on Titanium and Ti-6Al-4V. World Journal of Dentistry, 9 (6). pp. 444-450. ISSN 976-6006

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Aim: The study aimed to understand the interfacial bonding and diffusion of elements between substrate metal and HAcoated titanium implants in different plasma gas atmosphere. Materials and methods: Commercially pure titanium and Ti-6Al-4V substrate metals were coated with hydroxyapatite by plasma spray in plasma gas atmospheres of argon, argon/hydrogen, nitrogen, and nitrogen/hydrogen. The microstructure and interfacial bonding between the metal substrate and HA coating were studied by scanning electron microscopy, energy dispensive X-ray analysis (EDAX), and X-ray diffraction. Results: The analyses of the coatings obtained showed a different microstructural pattern of HA and diffusion of elements across the interface of metal and HA coating and chemical bonding for all plasma gas atmospheres. Conclusion: The plasma-coating atmosphere influences the microstructure and crystallization of HA. Diffusion of elements from metal substrate to HA coating and coating to metal surface indicate chemical bonding between the metal and coating in addition to usual mechanical bonding.Clinical significance: Bonding between the metal substrate and HA coating play a significant role in the stability of the dental implant. In addition to mechanical bonding, the plasma coated implants show some amount of chemical bonding at the interface.

Item Type: Article
Uncontrolled Keywords: Diffusion, Energy dispensive X-ray analysis, Hydroxyapatite, Interfacial bonding plasma coating, Tit
Subjects: Dentistry > MCODS Mangalore > Dental Materials
Depositing User: KMCMLR User
Date Deposited: 18 Mar 2019 11:16
Last Modified: 18 Mar 2019 11:16

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