Abstracts Book - IMRC 2018

• SB6-O011
TECHNOLOGICAL DEVELOPMENT FOR COMMERCIALIZATION OF
TRANSFORMATIONAL NEW GENERATION OF DENTAL IMPLANTS
COATED WITH BIOCOMPATIBLE/CORROSION RESISTANT
ULTRANANOCRYSTALLINE DIAMOND (UNCD) COATING
Orlando Hector Auciello 1,2 , Karam Kang 3 , Jesus J. Alcantar Peña 4 , Daniel G. Olmedo 5 , Sandra I.
Renou 5 , Debora R. Tasat 5
1 Original Biomedical Implants-México, Medical Devices, Mexico. 2 University of Texas at Dallas,
Materials Science and Engineering and Bioegineering, United States. 3 University of Texas at
Dallas, Materials Science and Engineering, United States. 4 University of Texas at Dallas,
Materials Science and Engneering, United States. 5 Universidad de Buenos Aires, Department of
Oral Pathology, Argentina.
Pure titanium and titanium alloys are widely used in commercial dental implants
and other orthopedics. However, these materials can suffer chemical corrosion
when implanted in the human body inducing the release of metallic
ions/particles the titanium surface, causing tissue inflammation and implant
failure. A novel ultrananocrystalline diamond (UNCD) coating, developed and
patented by OA and colleagues, exhibit outstanding mechanical, bioinert/biocompatible
properties and strong resistance to body fluids’ chemical
corrosion, as shown for UNCD-coated Si microchip implanted in the eye to
restore sight to people blinded by retina photoreceptors degeneration. This
presentation focus on describing the new R&D performed to develop Ti-based
dental implants coated with UNCD films, using an industrial-type MPCVD large
volume coating of dental implants for low cost fabrication. UNCD coatings were
produced by flowing an Ar/CH4/H2 gas mixture previously developed to produce
the patented UNCD coatings currently in the market in UNCD coated industrial
products. Mini dental implants (up to 10). Similar to real dental implants, but
slightly smaller, were positioned vertically on a circular holder uniformly
distributed in a circular pattern, similar to the one designed to hold up to 500
dental implants (~ 8 mm log, 2-3 mm diameter) around a 200 mm diameter
holder. A uniform plasma was produced around all implants, which were coated
simultaneously with extremely uniform UNCD films (~ 0.2 - 0.3 µm thick), as
shown by Raman and SEM analysis. Histological evaluation of UNCD-coated Tialloy
mini-implants with similar screw-type geometry as the commercial
implants were implanted in rats’ bones for several months. The in vivo animal
studies showed extremely good biocompatibility of the UNCD coating and oseointegration
in the animal bone, NO particles ejection, and NO tissue
inflammation around the bone. as it occurs with current commercial Ti-alloy