A5006163188- Dental Implant Techniques and Outcomes
- Dental materials and restorations
- Dental Radiography and Imaging
- Bone Tissue Engineering Materials
- Orthopaedic implants and arthroplasty
- AI in cancer detection
- Endodontics and Root Canal Treatments
- Quantum Dots Synthesis And Properties
- Adipokines, Inflammation, and Metabolic Diseases
- Medical Imaging and Analysis
- Chalcogenide Semiconductor Thin Films
- Phytochemicals and Antioxidant Activities
- Radiomics and Machine Learning in Medical Imaging
- Periodontal Regeneration and Treatments
- Chemical Reaction Mechanisms
- Organic and Inorganic Chemical Reactions
- Osteoarthritis Treatment and Mechanisms
- Wind Turbine Control Systems
- Dysphagia Assessment and Management
- Medicinal Plants and Bioactive Compounds
- Spacecraft and Cryogenic Technologies
- Plant Physiology and Cultivation Studies
- Pancreatic function and diabetes
- Methane Hydrates and Related Phenomena
- Advanced Semiconductor Detectors and Materials
Ansan University
2020-2025
Korea University
2015-2025
Seoul National University
1990-2020
Korea University Medical Center
2015-2018
Korea National University of Transportation
2013
Inha University
2003
Food Research Institute
1990
: Dental panoramic radiographs (DPRs) provide information required to potentially evaluate bone density changes through a textural and morphological feature analysis on mandible. This study aims the discriminating performance of deep convolutional neural networks (CNNs), employed with various transfer learning strategies, classification specific features osteoporosis in DPRs. For objective labeling, we collected dataset containing 680 images from different patients who underwent both...
The purpose of this study was to develop a diagnostic tool automatically detect temporomandibular joint osteoarthritis (TMJOA) from cone beam computed tomography (CBCT) images with artificial intelligence. CBCT patients diagnosed disorder were included for image preparation. Single-shot detection, an object detection model, trained 3,514 sagittal the that showed signs osseous changes in mandibular condyle. region interest (condylar head) defined and classified into 2 categories—indeterminate...
The aim of this study was to evaluate the biomechanical behavior and long-term safety high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional materials. A 3D FEA model a maxillary central incisor constructed. cyclic loading force 50 N applied at angle 45° longitudinal axis tooth palatal surface crown. For comparison traditionally used materials, three materials (gold, fiberglass, PEKK) were...
The object of the present study was to evaluate shear bonding strength composite PEKK by applying several methods surface treatment associated with various materials.One hundred and fifty specimens were assigned randomly fifteen groups (n = 10) combination three different treatments (95% sulfuric acid etching, airborne abrasion 50 µm alumina, 110 silica-coating alumina) five materials (Luxatemp Glaze & Bond, Visio.link, All-Bond Universal, Single Bond Monobond Plus Heliobond). After...
The aim of this study was to evaluate the deep convolutional neural networks (DCNNs) based on analysis cephalometric radiographs for differential diagnosis indications orthognathic surgery. Among DCNNs, Modified-Alexnet, MobileNet, and Resnet50 were used, accuracy models evaluated by performing 4-fold cross validation. Additionally, gradient-weighted class activation mapping (Grad-CAM) used perform visualized interpretation determine which region affected DCNNs’ classification. prediction...
According to recent studies, patients with COVID-19 have different feature characteristics on chest X-ray (CXR) than those other lung diseases. This study aimed at evaluating the layer depths and degree of fine-tuning transfer learning a deep convolutional neural network (CNN)-based screening in CXR identify efficient strategies. The images used this were collected from publicly available repositories, classified into three classes: COVID-19, pneumonia, normal. To evaluate effect same CNN...
The purpose of this pilot study was to evaluate and compare polyetherketoneketone (PEKK) with different framework materials for implant-supported prostheses by means a three-dimensional finite element analysis (3D-FEA) based on cone beam computed tomography (CBCT) computer-aided design (CAD) data.A geometric model that consisted four maxillary implants supporting prosthesis constructed from CBCT CAD data treated patient. Three (zirconia, titanium, PEKK) were selected, their material...
This study aimed to comparatively evaluate the biomechanical behaviors of three types dental implant restorations: a screw-and-cement-retained prosthetic system (SCRP); cementless screw-retained (SRP); and novel screwless hook-retained (HRP). Three-dimensional finite element analysis (FEA) was used behavior. A comparative prostheses performed under two loading conditions: vertical load 100 N an oblique at angle 30°. Under both conditions, maximum von Mises stress values in using HRP were...
Background: Video fluoroscopic swallowing study (VFSS) is considered as the gold standard diagnostic tool for evaluating dysphagia. However, it time consuming and labor intensive clinician to manually search recorded long video image frame by identify instantaneous abnormality in VFSS images. Therefore, this aims present a deep leaning-based approach using transfer learning with convolutional neural network (CNN) that automatically annotates pharyngeal phase frames untrimmed videos such need...
This study aimed to compare bone healing and implant stability for three types of dental implants: a threaded implant, three-dimensional (3D)-printed without spikes, 3D-printed with spikes. In four beagle dogs, left right mandibular premolars (2nd, 3rd, 4th) 1st molars were removed. Twelve weeks later, titanium implants (threaded spikes) randomly inserted into the edentulous ridges each dog. Implant measurements radiographic recordings taken every two following placement. after surgery, dogs...
Digital impressions can be a useful option that reduces patient discomfort and simplifies clinical procedures such as accurate impression recordings. In this report, with partial maxillectomy was managed metal frame fabricated from digital through an intraoral scanner. The final employed the altered cast technique for fabrication of obturator.
Kinetic studies of the reactions alpha-chloroacetanilides (YC6H4NRC(=O)CH2Cl; R = H (5) and CH3 (6)) with benzylamines (NH2CH2C6H4X) were carried out in dimethyl sulfoxide at 55.0 degrees C. The Brønsted betaX values range from 0.6 to 0.9 cross-interaction constants phoXY positive: +0.21 +0.18 for 5 6, respectively. rates faster 6 than inverse secondary kinetic isotope effects involving deuterated benzylamine (ND2CH2C6H4X) nucleophiles, kH/kD < 1.0, obtained. Based on these other results, a...
We investigated the phase equilibrium boundary of tri-n-butylphosphine oxide (TBPO) semiclathrate hydrates incorporated with CH4, CO2, and H2. TBPO aqueous solutions a molality (m) (1.61 1.98) mol·kg–1 were used for hydrate formation, which corresponded to clathrate structures TBPO·34.5H2O 28H2O, respectively. The at both concentrations was shifted promotion region represented by lower pressures higher temperatures, compared each simple gas hydrate. In particular, + CO2 double presented mild...
The aim of this study was to evaluate the effects relining materials on flexural strength relined thermoplastic denture base resins (TDBRs).For shear bond testing, 120 specimens were fabricated using four TDBRs (EstheShot-Bright, Acrytone, Valplast, Weldenz) that bonded with three autopolymerizing (ADRRs: Vertex Self-Curing, Tokuyama Rebase, Ufi Gel Hard) a area 6.0 mm in diameter and assigned each group (n=10). For measuring 64.0×10.0×3.3 (ISO-1567:1999) ADRRs thickness measured 2.0 TDBR...
The aim of this study was to compare the coronal sealing ability six different dental materials: Three MTA-based cements and three established restorative materials by in vitro dye penetration method. For infiltration experiments, seventy extracted single-rooted human teeth were used. After crowns reduced, root canals prepared, filled with gutta-percha cone. Teeth randomly divided into 6 groups 10 per group. orifice each tooth prepared 3 mm depth following (I) ProRoot WMTA; (II) EndoCem Zr;...
Pachyrhizus erosus (L.) Urb. is a tropical perennial vine plant native to southern Mexico, Southeast Asia, Central America, and Africa. In this study, we analyzed identified various polyphenolic compounds isoflavones present in ethanolic P. root extracts investigated their potential anti-obesity activity as natural health food resource. The extraction process involved drying the yam bean, followed by with 70% ethanol, evaporation, freeze-drying. Fractionation was achieved through layer...
In 2016, obese patients represented 13% of the worldwide adult population, and by 2030, they are projected to make up 34%. Obesity is an incommunicable disease, but it can induce many health problems. The groups consisted a control, 65% high-fat group, 250 mg/kg P. erosus group. Several biomarkers, such as body weight gain, presence TC/LDL/HDL in serum, fat tissue, liver weight/morphology, were investigated define anti-obesity mechanisms erosus, adipogenesis pathway was studied. suppressed...
Diffuse pollution sources along a stream reach are very difficult to both monitor and estimate. In this paper, systematic method using an optimal estimation algorithm is presented for simultaneous of diffuse model parameters in water quality model. It was applied with the QUAL2E South Han River Korea kinetic constants loads river. Initial calibration results selected from sensitivity analysis reveal that source inputs nitrogen phosphorus essential satisfy system mass balance. total were...
The aim of this study was to evaluate the efficacy growth factor loaded collagen membranes on new bone formation during horizontal augmentation. Mandibular defects (4 × 4 mm) were surgically prepared in six male beagle dogs, which then protected with one three types membranes: (1) titanium mesh, (2) reinforced collagen, or (3) rhBMP-2 collagen. Animals euthanized 8 and 16 weeks after surgery, nondecalcified specimens histomorphologically investigated determine degree osteogenesis. Data...
Assessing the metastasis status of sentinel lymph nodes (SLNs) for hematoxylin and eosin-stained frozen tissue sections by pathologists is an essential but tedious time-consuming task that contributes to accurate breast cancer staging. This study aimed review a challenge competition (HeLP 2019) development automated solutions classifying patients.A total 524 digital slides were obtained from SLN sections: 297 (56.7%) Asan Medical Center (AMC) 227 (43.4%) Seoul National University Bundang...
Background: The aim of this study was to biomechanically evaluate the initial stability a patient-specific root analogue implant (RAI) design with drilling protocol by comparing it designs without through 3D finite element analysis (FEA). Methods: A surface model an RAI for upper right incisor constructed. To effect apex drilling, four modified shapes were designed press-fit implantation method: Non-modified, wedge added at surface, lattice and apex-anchor (AA). Each subjected oblique load...
Although clinical scoring systems and biomarkers have been used to predict outcomes in sepsis, their prognostic value is limited. Therefore, machine learning (ML) models proposed the of sepsis. This study aims propose ML algorithms that create robust for predicting mortality patients with sepsis diagnosed using Sepsis-3 definitions emergency department. was performed a prospectively collected registry adult between January 2016 February 2020. Among 810 patients, 607 (75%) 203 (25%) were...