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A novel technique for tailored surface modification of dental implants - a step wise approach based on plasma immersion ion implantation.

Journal article
Authors Luiz Meirelles
Emilia Tieko Uzumaki
Jose Henrique Cavalcanti Lima
Carlos Alberto Muller
Tomas Albrektsson
Ann Wennerberg
Carlos Salles Lambert
Published in Clinical oral implants research
Volume 24
Issue 4
Pages 461-467
ISSN 1600-0501
Publication year 2013
Published at Institute of Clinical Sciences, Department of Biomaterials
Pages 461-467
Language en
Links dx.doi.org/10.1111/j.1600-0501.2011...
Subject categories Biomaterials

Abstract

OBJECTIVES: A novel technique based on plasma immersion ion implantation (PIII) is presented to modify titanium implant surfaces. MATERIALS AND METHODS: Initially, the implants are cleaned with argon to remove contaminants and the nanostructures are created by the bombardment of the surface with a mix of noble gases. Desired crystal structure of the titanium is obtained by the implantation of oxygen on the contaminant-free surface with particular nanostructures. RESULTS: In this study, turned implants modified by PIII revealed a high density of rutile-TiO(2) nanostructures. Turned implants used as control revealed mainly microstructures and amorphous crystal structure. Surface roughness values were similar at the microscale for both turned and turned + PIII implants. Bone response was evaluated by removal torque tests of implants placed in the rabbit tibia and femur. After 4 weeks of healing, turned + PIII demonstrated higher removal torque values (P = 0.001) compared to turned implants. CONCLUSIONS: The presence of rutile-TiO(2) nanostructures may explain the improved bone formation to turned + PIII implants.

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