Osteointegrative and microgeometric comparison between micro-blasted and alumina blasting/acid etching on grade II and V titanium alloys (Ti-6Al-4V)

Author(s)

Granato, Rodrigo ^[1] ; Bonfante, Estevam A. ^[2] ; Castellano, Arthur ^[3] ; Khan, Rehan ^[4] ; Jimbo, Ryo ^[5] ; Marin, Charles ^[1] ; Morsi, Sara ^[4] ; Witek, Lukasz ^[4] ; Coelho, Paulo G. ^{[4, 6, 7]}

Affiliation

^[1] UNIGRANRIO Univ, Div Surg & Oral Implants, Postgrad Program Dent, Duque De Caxias, RJ - Brazil

^[2] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodontol, Bauru, SP - Brazil

^[3] Univ Fed Santa Catarina, Dept Dent, OMPS Resident, Div Oral & Maxillofacial Surg, Florianopolis, SC - Brazil

^[4] NYU, Dept Biomat & Biomimet, New York, NY - USA

^[5] Malmo Univ, Fac Odontol, Dept Oral & Maxillofacial Surg & Oral Med, Malmo - Sweden

^[6] NYU, Langone Hlth Sch Med, Hansjorg Wyss Dept Plast Surg, New York, NY - USA

^[7] NYU Tandon Sch Engn, Mech & Aerosp Engn, New York, NY - USA

• Document type: Journal article
• Source: JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS; v. 97, p. 288-295, SEP 2019.
• Web of Science Citations: 1

Abstract

This study evaluated the effect of alumina-blasted/acid-etched (AB/AE) or microabrasive blasting (C3-Microblasted) surface treatment on the osseointegration of commercially-pure Ti (grade II) and Ti-6Al-4V alloy (grade V) implants compared to as-machined surfaces. Surface characterization was performed by scanning electron microscopy and optical interferometry (IFM) to determine roughness parameters (Sa and Sq, n = 3 per group). One-hundred forty-four implants were placed in the radii of 12 beagle dogs, for histological (n = 72, bone-to-implant contact - BIC and bone-area-fraction occupancy - BAFO) and torque to interface failure test at 3 and 6 weeks (n = 72). SEM and IFM revealed a significant increase in surface texture for AB/AE and C3-Microblasted surfaces compared to machined surface, regardless of titanium substrate. Torque-to-interface failure test showed significant increase in values from as-machined to AB/AE and to C3-Microblasted. Considering time in vivo, alloy grade, and surface treatment, the C3-microblasted presented higher mean BIC values relative to AB/AE and machined surfaces for both alloy types. BAFO levels were significantly higher for both textured surfaces groups relative to the machined group at 3 weeks, but differences were not significant between the three surfaces for each alloy type at 6 weeks. Surface treatment resulted in roughness that improved osseointegration in Grade II and V titanium substrates. (AU)

• FAPESP's process: 16/18818-8 - Multi-User Equipment approved in grant 2012/19078-7: ElectroPuls E3000 Linear-Torsion All-Electric dynamic test instrument package
• Grantee: Estevam Augusto Bonfante
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 12/19078-7 - Development and processing of Al2O3-ZrO2 translucent composite for CAD/CAM monolithic prostheses: the effect of aging on biaxial flexural strength
• Grantee: Estevam Augusto Bonfante
• Support Opportunities: Research Grants - Young Investigators Grants