A5065159274- Reconstructive Surgery and Microvascular Techniques
- Dental Implant Techniques and Outcomes
- Periodontal Regeneration and Treatments
- Reconstructive Facial Surgery Techniques
- Facial Trauma and Fracture Management
- Dental Radiography and Imaging
- Bone Tissue Engineering Materials
- Cleft Lip and Palate Research
- Cancer Diagnosis and Treatment
- Oral and Maxillofacial Pathology
- Orthopaedic implants and arthroplasty
- Oral health in cancer treatment
- Facial Nerve Paralysis Treatment and Research
- Bone health and treatments
- Tracheal and airway disorders
- Head and Neck Cancer Studies
- Head and Neck Surgical Oncology
- Sinusitis and nasal conditions
- Tissue Engineering and Regenerative Medicine
- Terahertz technology and applications
- Tumors and Oncological Cases
- Dental materials and restorations
- Dysphagia Assessment and Management
- Bone fractures and treatments
- Neuroscience and Neural Engineering
Asan Medical Center
2014-2024
University of Ulsan
2014-2024
Ulsan College
2015-2023
University of Southern California
2012
Seoul National University
2003-2011
Cancer Clinic
2011
National Cancer Center
2011
Ulsan University Hospital
2008
Yonsei University
2007
Seoul National University Dental Hospital
2005
The feasibility of terahertz (THz) imaging at frozen temperature for the clinical application oral cancer detection was investigated by analyzing seven tissues resected from four patients.The size, shape, and internal position cancers were mapped THz radiation in frequency range 0.2-1.2THz 20 °C 20 °C, compared with those identified histological examination.THz tissue found to offer greater sensitivity distinguishing cancerous areas surrounding a larger THz-frequency spectral difference...
Abstract Ridge resorption can result in insufficient bone volume for implant surgery, necessitating substitutes to restore the area. Recent advances computer-aided design and manufacturing enable use of alloplastic graft materials with customizable compositions or shapes. This randomized study evaluated clinical effectiveness a customized three-dimensional (3D) printed material. Sixty patients requiring guided regeneration installation following tooth extraction due alveolar were recruited...
Abstract Biodegradable polymer/ceramic scaffolds can overcome the limitations of conventional ceramic bone substitutes. However, methods scaffold fabrication often use organic solvents, which might be harmful to cells or tissues. Moreover, fabricated with have limited exposure on surface since polymer solution envelopes particles during process. In this study, we developed a novel method for efficient onto surface, would enhance osteoconductivity and wettability scaffold. Poly( D , L...
Implant surgery has become popular with the advance of surgical techniques such as sinus lifting, guided bone regeneration, and block graft. However, there were no data about frequency graft during implant surgery. The purpose this study was to report types depending on dental patients' profile complement database regarding surgery.The operations had been performed from January 2006 October 2014. upper lower jaws divided into six sextants. A total 792 sextants included in study. Patient...
This study evaluated the predictive factors for survival of patients with oral squamous cell carcinoma (OSCC) and investigated overall disease-specific (DSS) outcomes.A total 67 consecutive who underwent surgery OSCC from January 2006 to November 2014 were included in this study. Patients classified according age, sex, pTNM stages, primary sites, smoking alcohol drinking habits, depth invasion, perineural lymphovascular differentiation postoperative radiotherapy. Kaplan-Meier methods used...
Dysphagia is a common clinical condition characterized by difficulty in swallowing. It sub-classified into oropharyngeal dysphagia, which refers to problems the mouth and pharynx, esophageal body esophagogastric junction. can have significant negative impact one's physical health quality of life as its severity increases. Therefore, proper assessment management dysphagia are critical for improving swallowing function preventing complications. Thus guideline was developed provide...
Abstract Purpose If less than 4 mm of residual bone is remained in posterior maxilla, two‐stage operation recommended for implant installation. However, if primary stability could be obtained using tapered designed implants, one‐stage surgery performed with reliable success rate severely resorbed maxilla. The purpose this prospective study was to evaluate survival and rates the implants simultaneously placed into grafted sinus rough‐surfaced implant. Materials Methods A total two hundred...
We imaged a single case of oral malignant melanoma using terahertz (THz) reflection imaging at room temperature (20 °C) and below freezing (-20 °C). A nodule beneath the tissue surface was visualized 2-D B-scan THz techniques. The images were well correlated with histological findings. found to have lower water content than that normal cells, this effect may influenced refractive index absorption coefficient 20 °C. spectroscopic image frozen -20 °C showed better contrast because lack liquid...
Osteoradionecrosis is the most dreadful complication after head and neck irradiation. Orocutaneous fistula makes patients difficult to eat food. Fibular free flap choice of for mandibular reconstruction. Osteocutaneous can reconstruct both hard soft tissues simultaneously. This study was investigate success rate results fibular osteoradionecrosis mandible which side should be harvested better reconstruction.A total eight consecutive who underwent fibula reconstruction due jaw necrosis from...
Abstract Background Osteonecrosis of the jaws in patients treated with bisphosphonates is mostly associated intravenous while incidence oral not significant. Purpose The purpose this paper to describe a series cases jaw osteonecrosis that may be dental implant placement who had taken nitrogen containing via and/or route. Patients Six female were for after placement. An average age was 71.8 ± 6.5 years old and they history bisphosphonate use. Two suffered from cancer other osteoporosis....
Abstract Background Bisphosphonate-induced osteonecrosis of the jaw (BRONJ) presents with a typical pattern necrosis in patients who have been prescribed bisphosphonates (BPs) and other antiangiogenetic drugs to treat osteoporosis or bone-related complications cancer. Methods This study divided 38 BRONJ into two groups according prescribing causes: cancer ( n = 13) 25), underwent whole exome sequencing compared them normal controls 90). To identify candidate genes variants, we conducted...
Teeth extraction is inevitable in the case of progressive or alveolar bone destructing chronic periodontitis. Unfortunately, resulting defects may lead to many side effects. Here, we developed a novel dental-bone substitute preserve socket for hemostasis and regeneration. Hyaluronic acid-gelatin hydrogel (HG) polymers, β-tricalcium phosphate (TCP), biphasic calcium (BCP) ceramics were fabricated using freeze-drying methods. The HG/TCP/BCP plug was prepared be easily applied by pouring...
Endoscopic thyroid surgery is gaining wide acceptance; however, existing endoscopic methods for thyroidectomy have shown several limitations. Recently, a transoral technique using video assistance and endoscopy has been reported thyroidectomy. The aim of this study was to define new mandibular periosteal approach complement other types natural orifice minimally invasive surgery.Transoral thyroidectomies were performed in seven living pigs evaluate the feasibility safety approach. Total all...
Microvascular reconstruction is the treatment of choice after oral cancer ablation surgery. There are few published studies free flap survival among Korean populations. This study aimed to determine rate 121 consecutive cases maxillofacial microvascular and analyze complications associated with microsurgery.This included patients who underwent microsurgical flaps, from January 2006 through September 2019, performed by a single surgeon at surgery department tertiary medical center. A total...
Background Migration of a dental implant into the paranasal sinuses may be result sinus membrane perforation, loss osseointegration, and lack initial stability. The majority displaced implants migrate maxillary sinus, which cause sinusitis. Purpose purpose this study is to report an extremely rare ethmoid migration after crestal approach in resorbed posterior maxilla. Materials Methods A 60-year old Korean male with noncontributory medical history was referred from local clinic remove...
Idiopathic bone cavity (IBC) is an uncommon intra-osseous of unknown etiology. Clinical features IBC are not well known and treatment modalities controversial. The purpose this study was to investigate the clinical characteristics 27 patients who underwent surgical exploration.A total consecutive surgery due a jaw from April 2006 February 2016 were included in study. Nine male 18 female enrolled. Patients examined retrospectively regarding primary site, history trauma, graft material,...
In the present study, reproducibility and postoperative stability of a 3D printed surgical guide were evaluated in mandibular reconstruction with an osteocutaneous free flap (OCFF), including fibular (FFF) deep circumflex iliac artery (DCIA). Fifteen patients enrolled, was fabricated by simulation surgery using preoperative (T0) Computed tomography (CT) images. Mandibular performed OCFF guide. Postoperative CTs taken immediately, 1 week (T1), 6 months (T2) after surgery, to evaluate condyle...
Abstract: The purpose of this study was to fabricate bioartificial mucosa using cultured oral keratinocytes (OKCs) on an amniotic membrane (AM), and evaluate the possibility developing a prelaminated myomucosal flap fabricated local muscle flap. Buccal harvested from male New Zealand rabbits ( n = 40, 2.5–3.0 kg) primary cultivation performed. OKCs were seeded AM submerged culture Prelamination performed latissimus dorsi (LD) rabbits. Survival rate, layer OKCs, Cinamon’s score (CS) based...
Resection of mandibular tumors without proper reconstruction may lead to unfavorable esthetic and function results. The purpose this case series was describe clinical results a technique prevent tissue loss using nonvascular iliac grafts immediately following tumor resection long-term stability the implants.Three female patients presented with oral neoplasms (2 ameloblastoma 1 ossifying fibroma). performed nonvascularized simultaneous removal. Subsequently, 10 dental implants were placed 6 9...
Among the surface treatment methods suggested to enhance adhesion of resin cement fiber-reinforced composite posts, conflicting results have been obtained with silanization. In this study, effects silanization, heat activation after on bond strength between post and were determined.Six groups (n=7) established evaluate two types fiber (FRC Postec Plus, D.T. Light Post) three treatments (no treatment; air drying; drying at 38℃). Every specimen bonded dual-curing (Variolink N) stored in...