Sung‐Jae Kim, Bong Gun Lee, Chi‐Hang Lee, Wan-Sun Choi, JH Kim, KH Lee,
We compared the ceiling effects of two patient-rating scores, the Disability of the Arm, Shoulder and Hand (DASH) and Patient-Rated Wrist Evaluation (PRWE), and a physician-rating score, the Modified Mayo Wrist Score (MMWS) in assessing the outcome of surgical treatment of an unstable distal radial fracture. A total of 77 women with a mean age of 64.2 years (50 to 88) who underwent fixation using a volar locking plate for an unstable distal radial fracture between 2011 and 2013 were enrolled in this ...
Tópico(s): Bone fractures and treatments
2015 - British Editorial Society of Bone & Joint Surgery | The Bone & Joint Journal
So-Ri Kim, Wan‐Sun Lee, Woong‐Chul Kim, Hea-Young Kim, Ji‐Hwan Kim,
The purpose of this study was to evaluate the digitization of alginate impressions by analyzing differences between the scan data of two types of impressions (alginate and rubber) taken from the master die and the scan data for the master die. The master die and impressions were digitized using a dental laser scanner (7 series, Dental Wings, Montreal, Canada). The crown portion of the abutment teeth in the digital data of 20 impressions was divided into three regions: cervical surface, middle surface, ...
Tópico(s): Dental Radiography and Imaging
2015 - Japanese Society for Dental Materials and Devices | Dental Materials Journal
Wan-Sun Lee, Woong‐Chul Kim, Hae-Young Kim, Wook-Tae Kim, Ji‐Hwan Kim,
This study aimed to investigate the potential clinical application of digitized silicone rubber impressions by comparing the accuracy of zirconia 3-unit fixed partial dentures (FPDs) fabricated from 2 types of data (working model and impression) obtained from a laser scanner.Ten working models and impressions were prepared with epoxy resin and vinyl polysiloxane, respectively. Based on the data obtained from the laser scanner (D-700; 3Shape A/S, Copenhagen, Denmark), a total of 20 zirconia frameworks ...
Tópico(s): Endodontics and Root Canal Treatments
2014 - | The Journal of Advanced Prosthodontics
Ji-Young Sim, Wan-Sun Lee, Ji‐Hwan Kim, Hae‐Yeong Kim, Woong‐Chul Kim,
The purpose of this study was to evaluate the shear bond strength (SBS) of veneering ceramic and zirconia fabricated by the digital veneering method.A total of 50 specimens were fabricated, i.e., 10 specimens each for the metal-ceramic (control) group and the four zirconia groups. The zirconia groups comprised specimens fabricated by the digital veneering method, the heat pressing method, and hand layering method for two groups, respectively. Furthermore, the shear bond strength was measured with ...
Tópico(s): Dental Implant Techniques and Outcomes
2015 - Elsevier BV | Journal of Prosthodontic Research
Jong-Kyoung Park, Wan-Sun Lee, Hae-Young Kim, Woong‐Chul Kim, Ji‐Hwan Kim,
To assess the marginal and internal gaps of the copings fabricated by computer-aided milling and direct metal laser sintering (DMLS) systems in comparison to casting method.Ten metal copings were fabricated by casting, computer-aided milling, and DMLS. Seven mesiodistal and labiolingual positions were then measured, and each of these were divided into the categories; marginal gap (MG), cervical gap (CG), axial wall at internal gap (AG), and incisal edge at internal gap (IG). Evaluation was performed ...
Tópico(s): Additive Manufacturing Materials and Processes
2015 - | The Journal of Advanced Prosthodontics
Jae Cheong Lee, Sun Hyo Kim, Chang Wan Sun, Chang Ho Kim, Samooel Jung, Jun Heon Lee, Cheorun Jo,
본 연구는 산란 주령과 중량에 따른 계란의 주요 성분과 내부 품질의 변화를 확인하기 위하여 수행되었다. Hy-Line Brown 품종의 18주령에서 63주령으로부터 계란을 주령별로 약 50개씩 총 2,140개를 수거하여 난각, 난황 및 난백의 중량과 난백 높이 그리고 Haugh unit을 측정하였다. 중량 규격이 높아짐에 따라 난각, 난황 및 난백의 중량은 증가하였으나, 난백 높이와 Haugh unit은 낮아짐을 나타내었다. 또한, 산란 주령이 경과함에 따라 난황은 증가하고, 난백 비율은 감소하는 경향을 나타내었으며, 산란 주령은 난각, 난황, 난백 및 전체 계란 중량과 정의 상관관계를 보였으나, 난백 높이와 Haugh unit과는 부의 상관관계를 나타내었다. 또한 계란 중량이나 주요 구성 성분의 중량이 증가함에 따라 난백 높이 및 Haugh unit은 감소하는 것으로 나타났다. The objective of this study was to compare the principle components ...
Tópico(s): Animal Nutrition and Physiology
2013 - | Korean Journal of Poultry Science
Chang‐Hun Lee, K.-H. Lee, Bong Gun Lee, D. Y. Kim, Wan-Sun Choi,
Although malunion resulting from reconstruction for scaphoid fracture nonunion is a typical complication, there has been little consideration regarding its clinical outcomes.The quality of restoration of the scaphoid anatomy may have little effect on clinical outcomes.Twenty-five patients with scaphoid fracture nonunion underwent curettage and internal fixation with bone grafting performed by a single surgeon, and they were followed up for a minimum of 5 years. Some of these patients comprised the ...
Tópico(s): Bone fractures and treatments
2015 - Elsevier BV | Orthopaedics & Traumatology Surgery & Research
Young-Hoon Jo, Bong Gun Lee, Hee-Soo Kim, Joo-Hak Kim, Chang‐Hun Lee, Sung Jae Kim, Wan-Sun Choi, Jae-Ho Lee, Kwang-Hyun Lee,
Background: The present study aimed to investigate the incidence and seasonal variation of distal radius fractures (DRFs) in Korea.Methods: We analyzed a nationwide database acquired from the Korean Health Insurance Review and Assessment Service from 2011 to 2015.We used International Classification of Diseases, 10th revision codes and procedure codes to identify patients of all ages with newly diagnosed DRFs.Results: An average of about 130,000 DRFs occurred annually in Korea.The incidence of DRF, ...
Tópico(s): Elbow and Forearm Trauma Treatment
2018 - Korean Academy of Medical Sciences | Journal of Korean Medical Science
Hope S. Rugo, Nicholas C. Turner, Richard S. Finn, Anil A. Joy, Sunil Verma, Nadia Harbeck, Norikazu Masuda, Seock‐Ah Im, Xin Huang, Sindy Kim, Wan Sun, Shrividya Iyer, Patrick Schnell, Cynthia Huang Bartlett, Stephen Johnston,
Because incidence of breast cancer and comorbidities increase with age, it is important to determine treatment benefit in elderly patients. We evaluated outcomes with palbociclib plus endocrine therapy in patients aged ≥65 years.Data were pooled from three randomised studies (NCT00721409, NCT01740427 and NCT01942135) of women with HR+/HER2- advanced breast cancer (ABC). In PALOMA-1 (open-label) and PALOMA-2 (double-blind, placebo-controlled), treatment-naïve patients received palbociclib plus letrozole ...
Tópico(s): Breast Cancer Treatment Studies
2018 - Elsevier BV | European Journal of Cancer
Young-Hoon Jo, Bong Gun Lee, Joo-Hak Kim, Chang‐Hun Lee, Sung‐Jae Kim, Wan-Sun Choi, Ja Wook Koo, Kwang-Hyun Lee,
The objective of this study was to investigate national surgical trends for distal radius fractures (DRFs) in Korea and analyze healthcare institution type-specific surgical trends. We analyzed a nationwide database acquired from the Korean Health Insurance Review and Assessment Service (HIRA) from 2011 to 2015. International Classification of Diseases, 10th revision (ICD-10) codes and procedure codes were used to identify patients aged ≥ 20 years with newly diagnosed DRFs. A total of 459,388 DRFs occurred ...
Tópico(s): Medical Malpractice and Liability Issues
2017 - Korean Academy of Medical Sciences | Journal of Korean Medical Science
Sung‐Jae Kim, C.-H. Lee, Wan-Sun Choi, Bong Gun Lee, J.-H. Kim, K.-H. Lee,
We aimed to investigate the relationship between the pulley-tendon complexes and the severity of trigger finger. The thickness of the A1 and A2 pulleys, and the cross-sectional area of the flexor tendon under the pulleys, were prospectively assessed using 17 MHz high-resolution ultrasonography, in 20 patients with trigger finger (31 fingers). A control group comprised 15 asymptomatic fingers. The thickness of the A1 pulley and the proximal part of the A2 pulley, and the cross-sectional area of the ...
Tópico(s): Musculoskeletal synovial abnormalities and treatments
2015 - SAGE Publishing | Journal of Hand Surgery (European Volume)
J.-H. Kim, K.-H. Lee, Bong Gun Lee, C.-H. Lee, Su Jung Kim, Wan-Sun Choi,
We analysed scaphoid deformity as a result of surgical treatment of scaphoid fracture nonunion and assessed the deformity associated with a dorsal intercalated segmental instability pattern of carpal malalignment. A total of 45 patients who were treated for scaphoid fracture nonunion were included in the study. The height-to-length ratio of the scaphoid was measured on computed tomographic images and used to assess scaphoid deformity. Carpal malalignment was quantified based on the radio-lunate ...
Tópico(s): Medical Malpractice and Liability Issues
2016 - SAGE Publishing | Journal of Hand Surgery (European Volume)
Wan-Sun Lee, So-Yeon Kim, Ji‐Hwan Kim, Woong‐Chul Kim, Hae-Young Kim,
The purpose of this study is to mix dental ceramic powder in varying ratios and evaluate the effect of the mixing ratio on color and translucency.The ceramic powder of shade A3 of the same product was mixed with the shade A2 of three products: IPS e.max Ceram (Ivoclar Vivadent, Schaan, Liechtenstein), Vintage Halo (SHOFU Inc., Kyoto, Japan), and Ceramco 3 (Ceramco-Dentsply, Burlington, NJ, USA) in the following fixed ratios (0 wt%, 25 wt%, 50 wt%, 75 wt%, and 100 wt%) and then fired. A total of 150 ...
Tópico(s): Pigment Synthesis and Properties
2015 - | The Journal of Advanced Prosthodontics
Sung‐Jae Kim, Young-Hoon Jo, Wan-Sun Choi, Chang‐Hun Lee, Bong Gun Lee, Joo-Hak Kim, Kwang-Hyun Lee,
This study evaluated the biomechanical properties of a new volar locking plate made by 3-dimensional printing using titanium alloy powder and 2 conventional volar locking plates under static and dynamic loading conditions that were designed to replicate those seen during fracture healing and early postoperative rehabilitation.For all plate designs, 12 fourth-generation synthetic composite radii were fitted with volar locking plates according to the manufacturers' technique after segmental osteotomy. ...
Tópico(s): Elbow and Forearm Trauma Treatment
2017 - Elsevier BV | The Journal Of Hand Surgery
Kwang-Hyun Lee, Young-Hoon Jo, Sung‐Jae Kim, Wan-Sun Choi, Chang‐Hun Lee, Joo-Hak Kim,
PurposeThe purpose of this study was to evaluate the clinical outcome of autogenous palmaris longus grafting for extensor tendon ruptures of 2 or more fingers in rheumatoid hands and to identify the factors related to the clinical outcome.MethodsBetween 2000 and 2013, a total 41 patients with advanced rheumatoid arthritis and multiple extensor tendon ruptures reconstructed with autogenous palmaris longus tendon grafts were reviewed. Extension lag at the metacarpophalangeal (MCP) joint, total active ...
Tópico(s): Peripheral Nerve Disorders
2018 - Elsevier BV | The Journal Of Hand Surgery
Wan-Sun Choi, H. J. Lee, Do Young Kim, Chi‐Hang Lee, Bong Gun Lee, Jae‐Hong Kim, KH Lee,
We performed a retrospective study to determine the effect of osteoporosis on the functional outcome of osteoporotic distal radial fractures treated with a volar locking plate. Between 2009 and 2012 a total of 90 postmenopausal women with an unstable fracture of the distal radius treated with a volar locking plate were studied. Changes in the radiological parameters of 51 patients with osteoporosis (group 1, mean age 66.9, mean T-score -3.16 (sd 0.56)) were not significantly different from those in ...
Tópico(s): Elbow and Forearm Trauma Treatment
2015 - British Editorial Society of Bone & Joint Surgery | The Bone & Joint Journal
Young Uk Park, Jaeho Cho, Doo Hyung Lee, Wan-Sun Choi, Han Dong Lee, Keun‐Soo Kim,
Background: Single or combined multiple-site peripheral nerve blocks (PNBs) are becoming popular for patients undergoing surgery on their feet or ankles. These procedures are known to be generally safe in surgical settings compared with other forms of anesthesia, such as spinal block. The purposes of this study were to assess the incidence of complications after the administration of multiple PNBs for foot and ankle surgery and to compare the rates of complications between patients who received a ...
Tópico(s): Peripheral Nerve Disorders
2018 - SAGE Publishing | Foot & Ankle International
Ha-Bin Lee, Eun-Jeong BEA, Wan‐Sun Lee, Ji‐Hwan Kim,
This study aims to measure the trueness of zirconia crowns with different build directions of materials fabricated using the stereolithography (SLA) method. The anatomic contour crown of prepped maxillary right first molar was designed using CAD software to obtain the standard tessellation language (STL) file. Two different build directions were set for the crowns using Materialize Magics software. One group was built with a margin base platform, while the other group was built in the direction opposite ...
Tópico(s): Anatomy and Medical Technology
2022 - Japanese Society for Dental Materials and Devices | Dental Materials Journal
Joseph B. Guttenplan, Kun-Ming Chen, Yuan‐Wan Sun, Wieslawa Kosinska, Ying Zhou, Seung-Jin Kim, Youngjae Sung, Krishne Gowda, Shantu Amin, Gary D. Stoner, Karam El‐Bayoumy,
Effects of black raspberry (BRB) extract and protocatechuic acid (PCA) on DNA adduct formation and mutagenesis induced by metabolites of dibenzo[a,l]pyrene (DBP) were investigated in rat oral fibroblasts. The DBP metabolites, (±)-anti-11,12-dihydroxy-11,12,-dihydrodibenzo[a,l]pyrene (DBP-diol) and 11,12-dihydroxy-13,14-epoxy-11,12,13,14-tetrahydrodibenzo[a,l]pyrene (DBPDE) induced dose-dependent DNA adducts and mutations. DBPDE was considerably more potent, whereas the parent compound had no significant ...
Tópico(s): Genomics, phytochemicals, and oxidative stress
2016 - American Association for Cancer Research | Cancer Prevention Research
Sinyoung Park, Chung Mo Nam, Sejung Park, Yang Hee Noh, Cho Rong Ahn, Wan Sun Yu, Bo Kyung Kim, Seung Min Kim, Jin Seok Kim, Sun Young Rha,
With the growing amount of clinical research, regulations and research ethics are becoming more stringent. This trend introduces a need for quality assurance measures for ensuring adherence to research ethics and human research protection beyond Institutional Review Board approval. Audits, one of the most effective tools for assessing quality assurance, are measures used to evaluate Good Clinical Practice (GCP) and protocol compliance in clinical research. However, they are laborious, time consuming, ...
Tópico(s): Ethics in medical practice
2018 - BioMed Central | BMC Medical Ethics
Wan-Sun Lee, Jong-Kyoung Park, Ji‐Hwan Kim, Hae-Young Kim, Woong‐Chul Kim, Chin-ho Yu,
The precision of two types of surface digitization devices, i.e., a contact probe scanner and an optical scanner, and the trueness of two types of stone replicas, i.e., one without an imaging powder (SR/NP) and one with an imaging powder (SR/P), were evaluated using a computer-aided analysis.A master die was fabricated from stainless steel. Ten impressions were taken, and ten stone replicas were prepared from Type IV stone (Fujirock EP, GC, Leuven, Belgium). The precision of two types of scanners was ...
Tópico(s): 3D Surveying and Cultural Heritage
2015 - Elsevier BV | Journal of Prosthodontic Research
HS Rugo, Nicholas C. Turner, RS Finn, AA Joy, Sunil Verma, Nadia Harbeck, Stacy Moulder, Norikazu Masuda, Y-H Im, Kai Zhang, S Kim, Wan Sun, Patrick Schnell, C Huang-Bartlett, DJ Slamon,
Abstract Background: At least 40% of breast cancers are diagnosed in women ≥65 y old and most are hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-). Palbociclib (PAL) is an oral, small-molecule inhibitor of cyclin-dependent kinases 4 and 6. Randomized studies of PAL combined with endocrine therapy (ET) demonstrated significantly improved progression-free survival (PFS) in patients (pts) with treatment-naive and previously treated advanced breast cancer (ABC). Methods: ...
Tópico(s): Breast Cancer Treatment Studies
2017 - American Association for Cancer Research | Cancer Research
Wan Sun, Jeehyun Jung, Xiao Yu Wang, Pilkee Kim, Jongwon Seok, Duk-young Jang,
This study focuses on the design, simulation, and load power optimization for the development of a novel frequency-tunable electromagnetic vibrational energy harvester. The unique characteristic of a magnetorheological elastomer (MRE) is utilized, that the shear modulus can be varied by changing the strength of an applied magnetic field. The electromagnetic energy harvester is fabricated, the external electric circuit is connected, and the performance is evaluated through a series of experiments. ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2014 - SAGE Publishing | Advances in Mechanical Engineering
Ha-Bin Lee, Mi-Jun Noh, Eun-Jeong Bae, Wan‐Sun Lee, Ji‐Hwan Kim,
The aim of this study is to evaluate the accuracy of zirconia crowns fabricated using stereolithography (SLA) and digital light processing (DLP) and to compare their accuracy with those fabricated using the subtractive manufacturing (SM) method. A typodont model with a prepared maxillary first molar was scanned, and the anatomical contour crown was designed using dental computer-aided-design (CAD) software. The designed file in standard tessellation language (STL) format was used to fabricate 10 crowns ...
Tópico(s): Anatomy and Medical Technology
2024 - Elsevier BV | Journal of Dentistry
Soo Young Lee, Duk-yong Jang, Xiao Yu Wang, Pilkee Kim, Wan Sun, Jongwon Seok,
This study investigates the lubrication characteristics of a textured bearing sliding on a porous layer. To properly implement the porous layer effect in the bearing, the Brinkman-extended-Darcy model is employed, which results in a modified Reynolds equation. This equation is then evaluated to examine the effects of the porous layer’s material and geometric properties on the lubrication characteristics through the use of (semi-)analytic and numerical approaches. The cavitation effect is reflected ...
Tópico(s): Aerodynamics and Fluid Dynamics Research
2015 - SAGE Publishing | Advances in Mechanical Engineering
Soon‐Gil Yoon, E. S. Kim, Nianjun Kang, Wan-Sun Lee, Yeongun Kim,
For the integration of multi-chip module required thermally stable epoxy adhesive, the effects of clay incorporation on the thermal stability of cured epoxy adhesive were investigated. Various epoxy adhesives were prepared as a function of a number of epoxy rings and the amount of hardener. Based on the relationship between the glass transition temperature (Tg) and cross-linking density obtained from the curing mechanism analyzed by FT-IR, the epoxy adhesive with Tg higher than 200°C was synthesized ...
Tópico(s): Photopolymerization techniques and applications
2008 - Ceramic Society of Japan | Journal of the Ceramic Society of Japan
Kwang-Hyun Lee, Joo-Hak Kim, Chang‐Hun Lee, Sung Jae Kim, Young-Hoon Jo, Myungsub Lee, Wan-Sun Choi,
To date, there have been few reports on the nationwide population-based epidemiology of Dupuytren's disease (DD). We investigated the prevalence and incidence of DD in Korea using the large dataset provided by the Korean Health Insurance Review and Assessment Service. This study is the second nationwide epidemiological study of DD after the study in Taiwan.Records of patients diagnosed with DD between 2007 and 2014 were extracted from the large dataset by diagnostic code searching (International Classification ...
Tópico(s): Chemotherapy-related skin toxicity
2018 - Korean Academy of Medical Sciences | Journal of Korean Medical Science
Hyun Joon Kim, Sang Soo Kang, Gyeong Jae Cho, Wan Sun Choi,
Neurosteroids are synthesized de novo and involved in a variety of physiological functions in the central and peripheral nervous systems. Although the steroidogenic acute regulatory protein (StAR) plays an essential role in the steroidogenesis of peripheral endocrine glands, its presence and role in the brain had been previously questioned because of difficulties in detecting it. However, a number of recent studies have confirmed the presence of StAR in rodent and human brains. Moreover, there is ...
Tópico(s): Neuroscience and Neuropharmacology Research
2004 - International Society Histology & Cytology | Archives of Histology and Cytology
Slippage of the upper femoral epiphysis can occur in association with endocrine disorder. A 14-year-old male patient, who complained of pain on multiple joints including both hips, was diagnosed with bilateral slipped femoral epiphysis due to primary hyperparathyroidism. At a single operation, the epiphyses were pinned-in situ, and the tumor was removed. After parathyroidectomy, the calcium and the parathyroid hormone levels promptly resolved. The pinning-in situ of both femoral heads was done for ...
Tópico(s): Orthopaedic implants and arthroplasty
2009 - Korean Orthopaedic Association | The Journal of the Korean Orthopaedic Association
Tae Hun Kim, Doo‐Hyung Lee, Kyeong Jin Han, Wan-Sun Choi, Jaeho Cho,
Pediatric patients with olecranon fractures are uncommon. The tension band suture technique was introduced to reduce the burden of implant removal and other complications. However, to our knowledge, early range of motion (ROM) exercise has not been introduced in this population of patients. Double Vicryl loops and knots with 2 cross-pins are used to maintain the benefits of the tension band suture technique and to enhance fixation tensile strength. We believe that early ROM exercises could be achieved ...
Tópico(s): Shoulder Injury and Treatment
2017 - Elsevier BV | Journal of Shoulder and Elbow Surgery