A Revathi1, Alba Dalmau Borrás2, Anna Igual Muñoz3, Caroline Richard4, Geetha Manivasagam5. 1. School of Biosciences and Technology, VIT University, Vellore, India; Centre for Biomaterials Cellular and Molecular Theranostics, VIT University, Vellore, India. 2. Institute for Industrial, Radiophysical and Environmental Safety, Universidad Politécnicade Valencia, Spain; Laboratoire de Mécanique et Rhéologie (LMR) EA 2640, Université François Rabelais de Tours, France. 3. Institute for Industrial, Radiophysical and Environmental Safety, Universidad Politécnicade Valencia, Spain. 4. Laboratoire de Mécanique et Rhéologie (LMR) EA 2640, Université François Rabelais de Tours, France. 5. Centre for Biomaterials Cellular and Molecular Theranostics, VIT University, Vellore, India. Electronic address: geethamanivasagam@vit.ac.in.
Abstract
OBJECTIVE: For many decades the failure of titanium implants due to corrosion and wear were approached individually and their synergic effect was not considered. In recent past, developments and understanding of the tribocorrosion aspects have thrown deeper understanding on the failure of implants and this has been reviewed in this article extensively. METHODS: Medline, google scholar and Embase search was conducted to identify studies published between 1993 and 2016 which were related to the analysis of degradation mechanism which the dental implants undergo after implantation. RESULTS: In-vitro tests has been extensively carried out to evaluate the tribocorrosion behavior of titanium based dental implants. However, there is still a lack of knowledge about the tangible behavior of materials under in-vivo condition, because the in-vitro experiments are conducted using different testing protocols and conditions (solutions, pH, time, equipment, and testing parameters). Hence, there is an urgent need to perform round-robin test in different laboratories which will help to overcome the gap between in-vitro and in-vivo conditions. CONCLUSION: Tribocorrosion has been identified as the major degradation mechanisms that result in the failure of dental implants. Hence, it is of utmost importance to improve the service period of dental implants by reducing the tribocorrosion effects through developing new dental implant materials using nobler alloying elements or through modifying the surface of the implants. In order to have a thorough understanding of tribocorrosion behavior and failure mechanisms, round robin test are to be conducted and new protocols/standards are to be developed for the testing of implants.
OBJECTIVE: For many decades the failure of titanium implants due to corrosion and wear were approached individually and their synergic effect was not considered. In recent past, developments and understanding of the tribocorrosion aspects have thrown deeper understanding on the failure of implants and this has been reviewed in this article extensively. METHODS: Medline, google scholar and Embase search was conducted to identify studies published between 1993 and 2016 which were related to the analysis of degradation mechanism which the dental implants undergo after implantation. RESULTS: In-vitro tests has been extensively carried out to evaluate the tribocorrosion behavior of titanium based dental implants. However, there is still a lack of knowledge about the tangible behavior of materials under in-vivo condition, because the in-vitro experiments are conducted using different testing protocols and conditions (solutions, pH, time, equipment, and testing parameters). Hence, there is an urgent need to perform round-robin test in different laboratories which will help to overcome the gap between in-vitro and in-vivo conditions. CONCLUSION:Tribocorrosion has been identified as the major degradation mechanisms that result in the failure of dental implants. Hence, it is of utmost importance to improve the service period of dental implants by reducing the tribocorrosion effects through developing new dental implant materials using nobler alloying elements or through modifying the surface of the implants. In order to have a thorough understanding of tribocorrosion behavior and failure mechanisms, round robin test are to be conducted and new protocols/standards are to be developed for the testing of implants.
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