Yong-Hoon Jeong

Yong-Hoon Jeong
Osong Medical Innovation Foundation · Biomaterial Team, Dept. of Research & Development/Medical Device Development Center

PhD

About

82
Publications
7,262
Reads
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887
Citations
Additional affiliations
November 2010 - present
The Ohio State University
Position
  • PostDoc Position
March 2006 - January 2010
Chosun University
Position
  • MS, and PhD Student

Publications

Publications (82)
Article
Bone quality as well as its quantity at the implant interface is responsible for determining stability of the implant system. The objective of this study is to examine the nanoindentation based elastic modulus (E) at different bone regions adjacent to titanium dental implants with guided bone regeneration (GBR) treated with DBM and BMP-2 during dif...
Article
The objective of this study was to examine relationships among a variety of bone characteristics, including volumetric, mineral density, geometric, dynamic mechanical analysis, and static fracture mechanical properties. As MYO9B is an unconventional myosin in bone cells responsible for normal skeletal growth, bone characteristics of wild-type (WT),...
Article
Background: Primary stability of a dental implant system is an essential factor to maintain its long-term success. Thus, the objective of this study was to examine whether primary stability is different between threaded and porous dental implant systems placed in artificial bone blocks and human cadaveric mandibular bone. Materials and methods:...
Article
Background: The objectives of the current study were to examine the effects of mini-implant diameters on 1) primary stability before bone properties are changed by active peri-implant bone remodeling and 2) the time-dependent displacement of mini-implant systems in bone under a functional radial loading and their associations with bone mineral den...
Article
The purpose of this study was to investigate silicon-doped hydroxyapatite (HA) films deposited on Ti–35Nb–10Zr by an electrochemical and magnetron sputtering method. The Ti–35Nb–10Zr alloy was manufactured in an arc-melting furnace. Electrochemical deposition of HA was performed by pulsing the potential, using cyclic voltammetry, in the electrolyte...
Article
Full-text available
Objectives The objective of the current study was to examine whether the nanoindentation parameters can assess the alteration of bone quality resulting from different degrees of bone remodeling between bone tissue ages around the dental implant interface with different treatments and healing periods. Materials and methodsDental implants were placed...
Article
In this study, we reported the observation of highly ordered nanotubular structure on the Ti–29Nb– 5Zr alloy in various potentials and electrolytes by field emission scanning electron microscopy andscanning transmission electron microscope. From the X-ray diffraction results and microstructure analysis, Ti–29Nb–5Zr alloy had β phase. The nanotube m...
Article
The purpose of this study was to investigate nanotube nucleation phenomena of titanium dioxide on the Ti–6Al–4V alloy were investigated using anodic titanium oxide technique. Heat treatment was performed at 1000 °C for 12 hour for formation of α + β phase and water quenched. Ti–6Al–4V alloy was anodized in 1 M H3PO4 electrolytes containing 0.8 wt.%...
Article
The purpose of this study was to investigate the control of nanotube morphology using various factors for dental implant. TiO2 nanotube formation on biomedical grade α + β type Ti–6Al–4V alloy was investigated using anodization technique as a function of applied DC potential (10 V to 30 V and 30 V to 10 V) and anodization time for 60 min in 1 M H3P...
Article
The aim of this study was to investigate the electrochemical characteristics of nano crystallized Si-HA coating on Ti–Nb–Zr alloy after human osteoblast like (HOB) cell attachment. The Ti–Nb–Zr alloy was manufactured with 35 wt.% of Nb and 10 wt.% of Zr by arc melting furnace to appropriate physical properties as biomaterials. The HA and Si-substit...
Article
The purpose of this study was to investigate electrochemical deposition of Si-Ca/P on nanotube formed Ti–35Nb–10Zr alloy by cyclic voltammetry method. Electrochemical deposition of Si substituted Ca/P was performed by pulsing the applied potential on nanotube formed surface. The surface characteristics were observed by field-emission scanning elect...
Article
Full-text available
The temporomandibular joint (TMJ) bears different types of static and dynamic loading during occlusion and mastication. As such, characteristics of mandibular condylar bone tissue play an important role in determining the mechanical stability of the TMJ under the macro-level loading. Thus, the objective of this study was to examine regional variati...
Article
Full-text available
Background Resonance frequency analysis (RFA) has been introduced as a noninvasive method to clinically estimate the stability of dental implant systems.PurposeThe objective of this study was to examine whether implant stability quotient (ISQ) values of RFA can account for mechanical stability of the dental implant system, which is assessed using d...
Article
The aim of this study was to investigate the AC impedance behaviors of electrochemically deposited Si–hydroxyapatite (HA) films on nanotube-formed Ti–Nb–Zr alloys by the cyclic voltammetry method. Surface modifications were carried out sequentially during nanotube formation and the application of Si–HA coatings. The nanotube surface formed at 10 V...
Article
The aim of this study was to investigate the morphology change of HA films on highly ordered nanotubular Ti-Nb-Hf alloys as a function of electrochemical deposition cycle. The Ti-25Nb-xHf alloys were manufactured by vacuum arc-melting, heat treated for 12 h at 1000 degrees C, and water quenched. The HA deposition was carried out using a cyclic volt...
Article
The surface characteristics of hydroxyapatite coatings on nanotubular Ti-25Ta-xZr alloys prepared by electro-chemical deposition for dental implants have been investigated using various methods. The Ti-25Ta-xZr alloys were prepared by an arc melting furnace, homogenized for 12 h at 1000 degrees C in an argon atmosphere, and then water-quenched. Nan...
Article
Micro-pore formation on titanium surface can increase the adhesion strength with increment of surface area, and hydroxyapatite is effective coating materials as a main chemical constituent of bone tissue for biomedical field. The aim of this study was to investigate the surface characteristics of HA coating and micro-pore formation on the Ti–25Nb–x...
Article
Hydroxyapatite precipitation on nanotube surfaces of Ti–35Ta–xNb alloys was investigated using electrochemical methods. The alloys were prepared by arc-melting, heat treated at 1050 °C for 12 h in an Ar atmosphere, and quenched in 0 °C water. Nanotubes were created on the Ti–35Ta–xNb alloys in a 1 M H3PO4+1.2 wt.% NaF electrolyte at room temperatur...
Article
The purpose of this study was to investigate nanotube nucleation phenomena on the Ti–25Ta–xZr alloys for implant materials, using an anodic titanium oxide (ATO) technique. Ti–25Ta-(0 wt.%∼15 wt.%) Zr alloys were prepared using a vacuum arc-melting furnace. The Ti–25Ta–xZr alloys were then homogenized for 12 hr at 1000 °C, followed by water quenchin...
Article
The deposition and morphology of hydroxyapatite (HA) nanoparticles on nanotube-formed Ti-Nb-Zr alloys for dental implants has been investigated utilizing electrochemical, field-emission scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) methods. Ti-29Nb-xZr ternary alloys with 3 and 15 wt.% Zr content...
Conference Paper
Objectives: The popularity of over the counter (OTC) tooth whitening products stems from their availability, ease of use, affordability, and rapid mode of action in yielding desirable effects. Several published studies have reported detrimental effects on hard dental tissues due to bleaching, particularly affecting enamel hardness. Products are adv...
Conference Paper
Objective: Polymethylmethacrylate (PMMA) cement has been widely used to integrate trabecular bone in dental and orthopedic clinic. Objective of this study was to examine the effect of PMMA on mechanical properties of human bone tissue. Method: Two proximal tibia trabecular bone-PMMA cement specimens were obtained from human cadavers (1 male and 1...
Conference Paper
Objective: Resonance Frequency Analysis (RFA) has been introduced as a non-invasive method to estimate the stability of dental implant systems in clinic. The objective of this study was to examine whether implant stability quotient (ISQ) values of RFA can account for mechanical stability of the dental implant system using implantation in artificial...
Conference Paper
Objective: The temporomandibular joint (TMJ) bears different types of static and dynamic loading during occlusion and mastication. The objective of this study was to examine whether local mechanical properties of mandibular condyle bone tissue vary resulting from its functional adaptation to loading at TMJ. Method: Subchondral and trabecular bone...
Article
This study examined the effects of TiN (titanium nitride) and WC (tungsten carbide) coatings on the fatigue characteristics of dental implants using a sinusoidal cyclic loading machine under load between 42-420 N and 58-580 N according to the ISO 14801. In this study, an abutment screw was coated with a TiN and WC film by EB-PVD and sputtering, res...
Article
The purpose of this study was to investigate hydroxyapatite coatings on micropore-formed titanium alloy, utilizing an electrochemical deposition method. A commercially pure titanium surface was used as a substrate for calcium phosphate (CaP) deposition on micropores formed after anodization. Prepared surfaces were anodized in 1 M H3PO4 solution, an...
Article
In this study, we investigated the electrochemical characteristics of TiN/ZrN multilayers on a Ti-35Ta-xHf alloy by radio frequency (RF) magnetron sputtering. The Ti-35Ta-xHf alloy had an alpha '' + beta phase structure. The Ti-35Ta-15Hf alloy had a higher intensity beta phase peak than Ti-35Ta-3Hf and 7Hf alloy, which contained lower Hf content. T...
Article
The AC impedance behavior of silicon-hydroxyapatite doped film on the Ti–35Nb–xZr alloy by EB-PVD method was investigated in this study. The Si–HA composite coating layers were formed from Si of 0.8 wt.% with HA by EB-PVD method. The surface characteristics were analyzed by FE-SEM, EDS, and XRD. The AC impedance test was performed the frequency ran...
Conference Paper
Objective: Although cast Co-Cr and Ni-Cr alloys were widely used in prosthodontics, the casting of these alloys is technique-sensitive because of their high melting range and oxidation tendency. Laser sintering is receiving increased attention because accurate specimens can be prepared rapidly from powder, using a high-power laser and CAD files. Be...
Conference Paper
Objective: Laser-sintering is an additive manufacturing technology for dentistry that is capable of rapidly producing accurate restorations from starting powder particles, without the need for laborious technique-sensitive casting. At present, mechanical property and composition information is limited for laser-sintered restorations, and the object...
Conference Paper
Objective: Clinical studies have observed miniscrew migration in jaw bone under prolonged orthodontic functional loading. This migration may cause a serious complication if the miniscrew approaches a vital structure. Thus, the objective of this study was to examine potential factors that can influence miniscrew migration in the mandible. Method:...
Conference Paper
Objectives: Tooth whitening (bleaching) products have become extremely popular because of their relative ease of use and affordability. Several products are available which, to ensure acceptable esthetic results, require multiple applications over extended periods of time involving several days. Prolonged exposure to such products has been shown to...
Article
Full-text available
In this study, surface phenomena of hydroxyapatite (HA) film on the nanopore formed Ti-29Nb-xZr alloy by anodization for bioimplants have been investigated by electron beam physical vapor deposition (EB-PVD), field emission scanning electron microscope (FE-SEM), X-ray diffractometer (XRD), potentiostat and contact angle. The microstructure of Ti-29...
Article
Full-text available
To improve bone tissue integration on implant surfaces, nanotube formation and laser texturing techniques have been used to increase the roughness of the implant surfaces. In this study, surface film of nanotube/micropit formed Ti-3ONb-xZr and Ti-30Ta-xZr alloy with low elastic modulus have been investigated using field emission scanning electron m...
Article
Full-text available
The aim of the present study is to produce and characterize a well-controlled surface texture on Ti-35Nb-xHf alloys to promote osseointegration. Ti-35Nb-xHf (x = 0, 3, 7 and 15 wt.%) alloys were prepared by arc melting and heat treated for 12 hr at 1000 degrees C in an argon atmosphere and then water quenching. For surface texturing, an amplified T...
Article
To achieve excellent biocompatibility of metal-based implants, hydroxyapatite thin film coatings on nanotube-formed Ti–35Nb–10Zr alloys after femtosecond laser texturing have been investigated. Three groups of samples were prepared: (1) microtextured surfaces using femtosecond (FS) laser, (2) nanotube surfaces formed by anod-ization, and (3) hydrox...
Article
Nanotube growth analysis in the interface between oxide film and titanium alloy substrate has been researched using scanning transmission electron microscope and field-emission scanning electron microscopy (FE-SEM). The Ti-35Nb-xHf (x =3, 7 and 15 wt.%) alloys were prepared using the sponges of Ti, Nb and Hf. The nanotube on the alloy surface was f...
Article
The measurement of oxide thin film dissolution rate on the hydroxyapatite (HA)-coated Ti alloy was researched by scanning electron microscopy and impedance spectroscopy. For this study, Ti-35Nb-xHf alloys containing Hf from 3 wt.% to 15 wt.% were manufactured by using a vacuum furnace system. Ti-35Nb-xHf alloys were homogenized for 24 h at 1000 C....
Article
Previous research on nanotubular-structured Ti-35Nb-xZr alloys for biomaterials have employed a variety of experimental methods. The present research was focused on clarifying the morphologies of these nanotubes that form on electrochemically oxidized (anodized) Ti-35Nb-xZr alloys by using the scanning transmission electron microscope. The Ti-35Nb-...
Article
Full-text available
In this study, we have investigated the surface morphology of hydroxyapatite (HA) coated Ti alloy surface using pulsed laser plating. The HA (tooth ash) films were grown by pulsed KrF excimer laser, film surfaces were analyzed for topology, chemical composition, crystal structure and electrochemical behavior. The Ti-6Al-4V alloy showed α and β phas...
Conference Paper
Objective: Laser sintering is a recently introduced technology that has been used to prepare dental restorations from a biocompatible Co-Cr base metal alloy (Ucar et al, 2009). Two promising areas for this technology are preparation of frameworks for dental implant applications, which presently requires a time-consuming milling procedure, and waxin...
Conference Paper
Objectives: Temperomandibular joint (TMJ) osteoarthritis is characterized by degeneration of subchondral cortical and trabecular bone of mandibular condyle. When time-dependent viscoelastic daily loading including masticatory cyclic and occlusal constant loading surpass the adaptive capacity of TMJ condyle, severe degeneration of the TMJ can develo...
Article
In this paper, we investigated the electrochemical and surface behavior of hydroxyapatite (HA)/Ti films on the nanotubular Ti–35Nb–xZr alloy. The Ti–35Nb–xZr ternary alloys with 3–10 wt.% Zr content were made by an arc melting method. The nanotubular oxide layers were developed on the Ti–35Nb–xZr alloys by an anodic oxidation method in 1 M H3PO4 el...
Article
a b s t r a c t Surface phenomena of HA/TiN coatings on the nanotubular-structured beta Ti–29Nb–5Zr alloy for bioma-terials have been investigated by several experimental methods. The nanotubular structure was formed by anodizing the Ti–29Nb–5Zr alloy in 1 M H 3 PO 4 electrolytes with 1.0 wt.% NaF at room temperature. Hydroxyapatite (HA)/titanium n...
Article
Full-text available
The effect of anodizing on corrosion resistance of Ti-xHf alloys has been investigated. Ti-xHf alloys were prepared and anodized at 120, 170 and 220 V in 1 M H(3)PO(4) solution, and crystallized at 300 and 500°C. Corrosion experiments were carried out using a potentiostat in 0.15 M NaCl solution at 36.5 ± 1°C. The Ti-xHf alloys exhibited the α' and...
Article
Full-text available
The aim of this study was to investigate the formation of surface roughness on the Ti-35Nb-xZr alloy using femtosecond laser for biocompatibility. Ti-35Nb-xZr alloys exhibited equiaxed structure of phase. The femtosecond laser textured surface showed higher of R p and R a than non treated surface. The femtosecond laser textured surface showed lower...
Article
Full-text available
In this study, surface characteristics and cell proliferation of mechanical sandblasted Ti-30Ta-xNb surface have been investigated. Samples with three different surface preparations were used: 0.3um polished, 50um and 100um HA sandblasted. Cell culture on the specimen surface was performed with mouse osteoblast-like cells MC3T3-E1 for 2 days. Avera...
Article
Full-text available
Dental implant systems are subject to failure in the screw connection part which can occur due to screw loosening or fracture. For solving the problem of loosening, some researchers had carried out the TiN(titanium nitride) and WC(tungsten carbide) coating on the abutment screw, while fatigue failure may still be not researched as an issue of coati...
Article
a b s t r a c t a r t i c l e i n f o Available online 22 April 2011 Keywords: Hydroxyapatite EB-PVD Ti–35Nb–xZr alloy Elastic modulus Corrosion behavior The aim of this study was to investigate the hydroxyapatite coating on the Ti–35Nb–xZr alloy by electron beam-physical vapor deposition. The Ti–35Nb–xZr ternary alloys contained from 3 wt.% to 10...
Article
Full-text available
In this study, we investigated the electrochemical oxide nanotube formation on the Ti-35Ta-xHf alloys for dental materials. The Ti-35Ta-xHf alloys contained from 3 wt.% to 15 wt.% Hf were manufactured by arc melting furnace. The nanotube oxide layers were formed on Ti-35Ta-xHf alloy by anodic oxidation method in 1 M H3PO4 electrolytes containing 0....
Article
Full-text available
Titanium and its alloys are widely used as a dental implant material in clinical dentistry and as an orthopedic implant materials due to their good mechanical properties, corrosion resistance, and biocompatibility. In this study, nanotubular oxide surface and layer formed on the Ti-35Ta-xZr alloys for biomaterials have been investigated by using el...
Article
a b s t r a c t a r t i c l e i n f o Available online 12 January 2011 Keywords: Ti–35Nb–xZr alloy Femtosecond (FS) laser texturing Nanostructure Microstructure Hybrid topography The aim of this study was to investigate the nanostructured thin film formation on femtosecond (FS) laser-textured Ti–35Nb–xZr alloy for biomedical applications. The initi...
Article
The purpose of this research is to study the morphology of hydroxyapatite coated nanotube surface of Ti–35Nb–xHf for implant materials using various experiments. For this study, Ti–35Nb–xHf (x = 0, 3, 7 and 15 wt.%) alloys were prepared by arc melting and heat treated for 12 h at 1000 °C in an argon atmosphere and then water quenching. Nanotube for...
Conference Paper
Objectives: One aim of dental implant materials research is to employ surface modification that induces high biocompatibility. Better understanding of events at the bone-material interface is needed, as well as development of new materials and approaches that promote osseointegration. In the area of Ti implant alloys, recent research has focused on...
Conference Paper
Fracture of dental implants causes problems for clinicians and patients, although such events are fortunately rare. Objective: In this study electrochemical effects and the fracture of an implant system were investigated. Methods: A commercial abutment screw, abutment and implant fixture (KJ Meditec, Korea) were selected. TiN and WC coatings were d...
Article
Full-text available
In this study, the electrochemical behavior of nano and femtosecond laser textured titanium alloy for implant surface modification has been researched using the potentiostat equipment. Cp-Ti and Ti-6Al-4V alloy, located on X-Y motorized stage, were irradiated using femtosecond laser. The corrosion properties were examined by a potentiodynamic and A...
Article
In this study, surface characteristics of hydroxyapatite(HA) coated Ti-30Ta-xZr and Ti-30Nb-xZr alloys after nanotube formation have been investigated by EB-PVD, FE-SEM, XRD and potentiostat. The microstructures of the Ti-30Ta-xZr alloy had a needle-like morphology, and the thickness of this needle-like structure increased as the Zr content increas...
Article
Full-text available
Ti-30Nb-xZr and Ti-30Ta-xNb alloys have been investigated using various methods of surface nanotube formation. Ternary Ti-30Nb-xZr (x = 3 and 15 wt%) and Ti-30Ta-xNb (x = 3 and 15 wt%) alloys were prepared by using high-purity sponge Ti (Grade 4, G&S Titanium, USA), Ta, Zr and Nb spheres. The two groups of ternary Ti alloys were prepared using a va...
Article
In this study, surface characteristics of dental implant fixture with various manufacturing process have been researched using electrochemical methods. The dental implant fixture was selected with 5 steps by cleaning, surface treatment and sterilization with same size and screw structure; the 1st step-machined surface, 2nd step-cleaned by thinner a...
Article
Full-text available
Ti-13Nb-13Zr (TNZ) alloy has attracted considerable research attention in the last decade as a suitable substitute for the commercially used Ti-6Al-4V (TAV) alloy for orthopedic and dental implant applications. Hence, in the present work, a comparative evaluation has been performed on the electrochemical corrosion behavior of TNZ and TAV alloys in...
Article
Full-text available
Effects of TiN/Ti multilayer coating on the Ti-30Ta-xZr alloy surface were studied by using various experiments. The Ti-30Ta containing Zr (5, 10 and 15 wt%) were melted 10 times to improve chemical homogeneity by using a vacuum furnace. And then samples were homogenized for 24 hrs at . The specimens were prepared for TiN/Ti coating by cutting and...
Article
Electrochemical behavior of dental implant system before and after clinical use (in vivo and in vitro) was researched by using abutment and titanium fixture. To simulate an oral environment, the samples of clinically used and non-used implant systems as a working electrode were exposed to artificial saliva at (36.5±1) °C. Electrochemical tests were...
Article
Ti-Hf binary alloys contained 10%, 20%, 30% and 40% (mass fraction)Hf were manufactured in the vacuum furnace system. And then, specimens were homogenized for 24 h at 1 000 °C in argon atmosphere. The formation of oxide nanotubes was conducted by anodic oxidation on the Ti-Hf alloy in 1 mol/L H3PO4 electrolytes containing small amounts of NaF at ro...
Article
In this paper, Ti–Hf (10, 20, 30 and 40 wt.%) alloys were prepared by arc melting, and subjected to heat treatment for 24 h at 1000 °C in an argon atmosphere. Formation of surface nanotubes was achieved by anodizing a Ti–Hf alloy in 1.0 M H3PO4 electrolytes with small amounts of NaF at room temperature. Microstructures of the alloys and nanotube mo...
Article
Full-text available
The fit between dental implant fixture and zirconia abutment is affected by many variables during the fabrication process by CAD/CAM program and milling working. The purpose of this study was to evaluate the surface compatibility and electrochemical behaviors of zirconia abutment for prosthodontics. Zirconia abutments were prepared and fabricated u...
Article
Corrosion Science and Technolgy (Korean Journal) 2009, 8 139-142 Recently, quaternary titanium alloys of the system Ti-Nb-Ta-Zr received considerable research interest as potential implant materials because of their excellent mechanical properties and biocompatibility. However, only few reported works were available on the corrosion behavior of suc...
Article
Dental implant system is composed of abutment, abutment screw and implant fixture connected with screw. The problems of loosening/tightening and stability of abutment screw depend on surface characteristics, like a surface roughness, coating materials and friction resistance and so on. For this reason, surface treatment of abutment screw has been r...