1.Giant Osteochondroma from the Rib: A report of One Case
Byung Yun HWANG ; Sang Hyun LEE
The Journal of the Korean Orthopaedic Association 1977;12(3):539-541
The osteochondroma is a common benign tumor with osteocartilaginous exostosis. It may arise from any bone, but is observed most often on long tubular bones, particularly on their metaphyseal region. Osteochondroma may also arise from the rib but seldom grow to giant size. We experienced a rare case of giant osteochondroma arising from the left 5th rib. The patient, 41 years old man, had an adult fist sized mass on the left lower chest with mild aching pain on respiration. The large mass was examined by biopsy. It showed characteristic microscopic findings of osteochondroma. No evidence of malignant change was seen in this large tumor.
Adult
;
Biopsy
;
Humans
;
Osteochondroma
;
Respiration
;
Ribs
;
Thorax
2.Crush-Cleavage Fracture in Thoracolumbar and Lumbar Spine: Comparative Study with Type B Burst Fracture
Kyung Jin SONG ; Hak Ji KIM ; Ki Young CHANG ; Sang Soon CHOI ; Byung Yun HWANG
The Journal of the Korean Orthopaedic Association 1996;31(4):702-710
We noticed a group of thoracolumbar and lumbar spine fractures showing a unique fracture pattern that consisted of 1) superior disc injury, 2) crush fracture of the upper half of the vertebral body, 3) sagittal fracture of the lower half of the vertebral body, 4) bone fragments in the spinal canal, and 5) lamina fracture. Some of these fracture patterns were present in type B burst fracture of Denis classification. The purpose of this study was to compare the difference between crush-cleavage fracture and type B burst fracture in the viewpoint of neural canal involvement and neurologic status, and functional outcome with surgical treatment. Ten cases were identified as crush-cleavage fractures in 22 type B burst fractures during a 5 year period from Mar. 1989 to Jun. 1993 at the Department of Orthopedic Surgery of Chonbuk National University Hospital. Four out of 10 crush-cleavage fractures and 4 out of 12 type B burst fractures were paraparetic. Crush-cleavage fracture must be an unstable thoracolumbar comminuted fracture, but there were no significant differences in the neural canal involvement, incidence of neurologic deficit, and in the functional outcome, compared with type B burst fracture (P>0.05). It could be classified as a progressed form of type B burst fracture in Denis classification, or as a burst-split fracture in Magerl classification in the anatomical viewpoint. In conclusion, crush-cleavage fracture must be a variant of burst fracture.
Classification
;
Fractures, Comminuted
;
Incidence
;
Jeollabuk-do
;
Neural Tube
;
Neurologic Manifestations
;
Orthopedics
;
Spinal Canal
;
Spine
3.Individualized Ideal Occlusal Plane for Orthognathic Surgery and Orthodontic Treatment (Preliminary Study)
Yun Jung HWANG ; Sang Duck YANG ; Jin Young CHOI
Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons 2009;31(2):143-148
Dental Occlusion
;
Female
;
Humans
;
Incisor
;
Jaw
;
Lip
;
Male
;
Mandible
;
Orthodontics
;
Orthognathic Surgery
;
Reference Values
4.A case of rupture of the common carotid artery by gunshot injury.
Hwang Min YUN ; Jeong Pyo BONG ; Sang Yoo PARK ; Ki Yeun KIM ; Dong Joon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(5):1038-1042
No abstract available.
Carotid Artery, Common*
;
Rupture*
5.Sleep Disorders and Restless Legs Syndrome in Alcohol Dependence Patients.
Moon In LEE ; Hong Joo JUNG ; Han Sok KIM ; In Bok HWANG ; Jae Jung SIN ; Sang Bum KANG ; Woo Sang YUN ; Sang Hoon KIM
Sleep Medicine and Psychophysiology 2010;17(1):16-20
OBJECTIVES: We review the sleep problems of the alcohol dependence patients. Especially we are interested in the prevalence, the severity of symptoms, anxiety, depression, and sleep quality of restless legs syndrome (RLS) in the alcohol dependence patients. METHODS: We recruit 86 alcohol dependence patients who were admitted from October 6th, 2008 to October 17th, 2008. We interviewed each patient and evaluated sleep questionnaires such as the Sleep Disorder Questionnaire (SDQ), the Pittsburgh Sleep Quality Index (PSQI) and the International Restless Legs Syndrome Study Group (IRLSSG) rating scale. The presence of RLS and its severity were assessed using the IRLSSG diagnostic criteria and the IRLSSG severity scale, respectively. Depression and anxiety were evaluated by the Beck Depression Inventory (BDI) and the Beck anxiety inventory (BAI). RESULTS: Of all 86 patients, 59 patients have insomnia, 33 patients have RLS, 30 patients have Periodic limb movement disorder (PLMD), 29 patients have nightmare. RLS patients have more high score in the BAI (21.70+/-10.36 vs 14.67+/-11.98), and their sleep quality was poor in the PSQI (11.09+/-4.08 vs 7.92+/-3.91) than non-RLS patients. CONCLUSION: This study shows that alcohol dependence patients show many sleep problems such as insomnia and RLS. So we should notice that the sleep problems of alcohol dependence patients are important in clinical approach and treatment.
Alcoholism
;
Anxiety
;
Depression
;
Dreams
;
Humans
;
Nocturnal Myoclonus Syndrome
;
Prevalence
;
Surveys and Questionnaires
;
Restless Legs Syndrome
;
Sleep Wake Disorders
;
Sleep Initiation and Maintenance Disorders
6.A comparative study on radiopacity of canal filling and retrograde root-end filling materials.
Yong Sang KIM ; Seo Kyong KIM ; Yun Chan HWANG ; In Nam HWANG ; Won Mann OH
Journal of Korean Academy of Conservative Dentistry 2008;33(2):107-114
This study was performed to assess the radiopacity of a variety of canal filling and retrograde root-end filling materials according to the specification concerning root canal obturation materials. Ten materials including Gutta-percha pellets, amalgam, Fuji II LC, Dyract(R) AP, Super EBA(R), IRM(R), AH 26(R), Sealapex(TM), Tubli-Seal(TM) and dentin were evaluated in this study. In the first part, densitometric reading of an each step of aluminum step wedge on occlusal film were performed at 60 kVp (0.2, 0.3, 0.4 s), 70 kVp (0.2, 0.3, 0.33 s) to decide appropriate voltage and exposure time. In the second part, ten specimens which are 5 mm in diameter and 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 mm in thickness, were fabricated from each material studied. The specimens were radiographed simultaneously with an aluminum step wedge under decided condition (60 kVp, 0.2 s). The mean radiographic density values of the materials were transformed into radiopacity expressed equivalent thickness of aluminum (mm Al). The following results were obtained. 1. Among the various conditions including 0.2 s, 0.3 s, 0.4 s at 60 kVp and 0.2 s, 0.3 s, 0.33 s at 70 kVp, the appropriate voltage and exposure time that meet the requirement of density from 0.5 to 2.0 was 0.2 s at 60 kVp. 2. All of the materials in this study had greater radiopacity than the minimun level recommended by ISO No. 4049 standards. 3. Most of the materials had greater radiopacity than 3 mm Al requirement of ANSI/ADA specification No. 57 (2000) and ISO No. 6876 (2001) standards except for Fuji II LC and Dyract. It suggests that all experimental canal filling and retrograde root-end filling materials have a sufficient radiopacity that meet the requirement concerning root canal obturation materials except for Fuji II LC and Dyract.
Aluminum
;
Compomers
;
Dentin
;
Glass Ionomer Cements
;
Gutta-Percha
;
Resins, Synthetic
;
Root Canal Obturation
7.Conservative approach for anterior crown-root fractured teeth: forced eruption
Ji-Eun KIM ; Sung-Hyeon CHOI ; Hoon-Sang CHANG ; Yun-Chan HWANG ; In-Nam HWANG ; Won-Mann OH
Journal of Dental Rehabilitation and Applied Science 2020;36(1):48-54
In the case of crown-root fracture due to traumatic injury in anterior tooth and the fracture margin is located subgingivally,forced eruption has been proposed for the reconstruction of deficient bone and soft tissue. Forced eruption is one of the easiestorthodontic approaches that can have an acceptable outcome and prognosis, and has a low incidence of relapse. However, using heavy forces or very fast movements can also cause tissue damage or ankylosis. The following case reports present forced eruption as treatment option of crown fracture in maxillary anterior teeth.
8.Effects of CTHRC1 on odontogenic differentiation and angiogenesis in human dental pulp stem cells
Jong-soon KIM ; Bin-Na LEE ; Hoon-Sang CHANG ; In-Nam HWANG ; Won-Mann OH ; Yun-Chan HWANG
Restorative Dentistry & Endodontics 2023;48(2):e18-
Objectives:
This study aimed to determine whether collagen triple helix repeat containing-1 (CTHRC1), which is involved in vascular remodeling and bone formation, can stimulate odontogenic differentiation and angiogenesis when administered to human dental pulp stem cells (hDPSCs).
Materials and Methods:
The viability of hDPSCs upon exposure to CTHRC1 was assessed with the WST-1 assay. CTHRC1 doses of 5, 10, and 20 µg/mL were administered to hDPSCs.Reverse-transcription polymerase reaction was used to detect dentin sialophosphoprotein, dentin matrix protein 1, vascular endothelial growth factor, and fibroblast growth factor 2. The formation of mineralization nodules was evaluated using Alizarin red. A scratch wound assay was conducted to evaluate the effect of CTHRC1 on cell migration. Data were analyzed using 1-way analysis of variance followed by the Tukey post hoc test. The threshold for statistical significance was set at p < 0.05.
Results:
CTHRC1 doses of 5, 10, and 20 µg/mL had no significant effect on the viability of hDPSCs. Mineralized nodules were formed and odontogenic markers were upregulated, indicating that CTHRC1 promoted odontogenic differentiation. Scratch wound assays demonstrated that CTHRC1 significantly enhanced the migration of hDPSCs.
Conclusions
CTHRC1 promoted odontogenic differentiation and mineralization in hDPSCs.
9.The Determinant of the Severity Who was Hospitalized with Asthma-like Symptoms in Influenza A (H1N1) Season.
Yoon Ha HWANG ; Sang Yun CHOI ; Sung Won KIM
Pediatric Allergy and Respiratory Disease 2012;22(2):147-153
PURPOSE: The aim of study was to identify the predictors of severe asthma exacerbation with influenza A (H1N1) infection so that intensive care could be initiated immediately. METHODS: Patients were diagnosed influenza A (H1N1), using a real-time reverse transcriptase polymerase chain reaction (RT-PCR) from the nasal aspirates in St. Mary's Medical Center, Busan, Korea, between September, 2009 and February, 2010. Medical records were retrospectively reviewed to collect data. Data were analyzed in two groups by severity of asthma exacerbation. The groups were severe groups and mild-moderate. Statistical analysis was performed by SPSS ver. 12.0. RESULTS: A total of 1,054 children were diagnosed influenza A (H1N1) infection. Of 1,054, 318 (30.1%) were hospitalized. There were 200 boys (62.9%) and median age was 5.0 years (0.1 to 18.0 years). Among hospitalized, 25.2% (80/318) were diagnosed asthma exacerbation. Among 80 patients, 16 (20.0%) were severe group. and 64 (80.0%) were mild-moderate. High leukocyte counts, neutrophil counts, and C-reactive protein (P<0.05) in serum had a greater risk for severe asthma exacerbation. Age, gender, early antiviral medication, gastrointestinal or neurological cosymptoms, allergic family history, sinusitis in water's view, total immunoglobulin E, Dermatophagoides pteronyssinus, Dermatophagoides farinae, mycoplasma coinfection, eosinophil and fever duration (P> or =0.05) were not reliable predictors. CONCLUSION: Among who had influenza A (H1N1) infection with asthma-like symptoms, patients who had not been managed asthma before, had high leukocyte, neutrophil, and C-reactive protein in serum, are likely to progress severe asthma exacerbation.
Asthma
;
C-Reactive Protein
;
Child
;
Coinfection
;
Dermatophagoides farinae
;
Dermatophagoides pteronyssinus
;
Eosinophils
;
Fever
;
Humans
;
Immunoglobulin E
;
Immunoglobulins
;
Influenza A virus
;
Influenza, Human
;
Critical Care
;
Korea
;
Leukocyte Count
;
Leukocytes
;
Medical Records
;
Mycoplasma
;
Neutrophils
;
Retrospective Studies
;
Reverse Transcriptase Polymerase Chain Reaction
;
Seasons
;
Sinusitis
10.Sialography And Salivary Scan Study Of Salivary Diseases.
Yun Kyoung PARK ; Eui Hwan HWANG ; Sang Rae LEE
Journal of Korean Academy of Oral and Maxillofacial Radiology 1999;29(1):175-189
The purpose of this study was to established the characteristic radiographic features in salivary gland diseases by means of sialography and scintigraphy. Sialograms and scintigrams with diseases of salivary gland were examined. In this group were 5 salivary stones, 14 sialadenitis, 17 Sj gren's syndromes and 8 benign tumors. The obtained results were as follows; 1. In the configuration of the shape of main duct, those revealed that modified curvilinear and curvilinear types were predominant in Sj gren's syndromes but reverse sigmoid and angular types were in sialolithiasis and sialadenitis combined with sialodochitis. 2. In the configuration of the course of main duct, those revealed that smooth types were predominant in sialadenitis and irregular types were predominant in Sj gren's syndromes and benign tumors and irregular types were seen in all salivary stones and sialadenitis combined with sialodochitis, 3. In the type of intraglandular pattern, those revealed that destructive changes of salivary duct system and parenchyma were severe in sialadenitis and salivary stones and predominantly severe in Sj gren's syndromes. 4. The function of salivary gland was decreased severely in Sj gren's syndrome. and also decrease in salivary stone and sialadenitis. In benign tumor, the uptake of radioisotope was not seen in lesion and the function of salivary gland decreased in its remaining normal parenchyma.
Colon, Sigmoid
;
Radionuclide Imaging
;
Salivary Ducts
;
Salivary Gland Calculi
;
Salivary Gland Diseases
;
Salivary Glands
;
Sialadenitis
;
Sialography*