1.A Study of Types and Distribution of Orthodontic Patients in the Department of Dentistry.
Sang Kil BYUN ; Hee Kyung LEE ; Byung Rho CHIN
Yeungnam University Journal of Medicine 1986;3(1):243-247
174 patients who visited in the Department of Dentistry, College of Medicine, Yeungnam University from 1983. 7. 15 to 1986. 11. 30 were surveyed on the tendency of patient distribution and the state of Angle's classification. The results were as follows 1. There was increased visiting rate of patient per year. Female outnumbered male by a ratio of 1.3:1. 2. 8-15 age group was 74% in total visiting in the most frequency. The average visiting numbers of each month were higher among the vacation and was about 74% in that period. 3. As showed the living distribution, Nam Go and Su Sung Gu's patients were 53% of the total. 4. As the motive of visiting in Dental Department, patient of 30% in total patients visited for themself to receive orthodontic treatment and other was introduced patients. 5. By classification, Class I malocclusion was 63% in total visiting patient, Class II malocclusion 17%, Class III malocclusion 20%. Crowding among Class I malocclusion was 60%.
Classification
;
Crowding
;
Dentistry*
;
Female
;
Humans
;
Male
;
Malocclusion
2.A Case of Spindle Cell Thymoma with Spinal Cord Compression.
Jong In BYUN ; Sang Min SEONG ; Kyung Tai WHANG ; Eun Deok CHANG ; Young Hee JEE
Journal of the Korean Pediatric Society 1988;31(9):1237-1242
No abstract available.
Spinal Cord Compression*
;
Spinal Cord*
;
Thymoma*
3.Surgical Treatment of Phenytoin Induced Gingival Hyperplasia: A Report of Case.
Sang Kil BYUN ; Hee Kyung LEE ; Byung Rho CHIN ; Meung Chul OH
Yeungnam University Journal of Medicine 1986;3(1):383-386
Enlargement of the gingival caused by phenytoin. An anticonvulsant used in the treatment of epilepsy, occurs in some of the patients receiving the drug. Its incidence varies from 3 to 62 percent, with the greater frequencies in younger patients. The hyperplasia is usually generalized throughout the mouth, but is more severe tendency in the maxillary and mandibular anterior regions. 18 year old male patient was admitted to our Department of Dentistry with the complaint of generalized painless gingival swelling. After the consult of the N.M. and laboratory study, the gingivectomy and gingivoplasty was performed. The periodontal pack and tin foil was applied on the attached gingival to protect a surgical site and bleeding control. We obtained a good result of improved esthetics and function.
Dentistry
;
Epilepsy
;
Esthetics
;
Gingival Hyperplasia*
;
Gingivectomy
;
Gingivoplasty
;
Hemorrhage
;
Humans
;
Hyperplasia
;
Incidence
;
Male
;
Mouth
;
Phenytoin*
;
Tin
4.Angle's Class II Division 2 Malocclusion Treated by Bioprogressive Mechanism: Report of a Case.
Sang Kil BYUN ; Hee Kyung LEE ; Byung Rho CHIN ; Meung Chul OH
Yeungnam University Journal of Medicine 1987;4(1):151-156
A 25 year and 7 month old man patient who had Angle's class II division 2 malocclusion combined with anterior crowding of upper & lower part was treated by bioprogressive mechanism. After setting out objectives through the use of V. T. O., we programmed a sequence of mechanic. The possible objectives of treatment in the class II division 2 malocclusion can be listed as follows. 1) Relief of crowding & irregularities. 2) Relief of anterior gingival trauma & correction of interincisal inclination. 3) Correction of buccal segment relationship We'd applied the class II intermaxillary elastics, Quad helix, utility arch wire and sectional arch wire in order to achieve anticipated objectives. As compared with pre & post treatment cephalogram, the result accomplished by this mechanics showed to us that interincisal angle was improved and favorable molar relationship was achieved.
Crowding
;
Elvitegravir, Cobicistat, Emtricitabine, Tenofovir Disoproxil Fumarate Drug Combination
;
Humans
;
Malocclusion*
;
Mechanics
;
Molar
5.Three dimensional finite element stress analysis of five different taper design implant systems.
Sang Ki BYUN ; Won Hee PARK ; Young Soo LEE
The Journal of Korean Academy of Prosthodontics 2006;44(5):584-593
STATEMENT OF PROBLEM: Dental implant which has been developed gradually through many experiments and clinical applications is presently used to various dental prosthetic treatments. To conduct a successful function of implant prosthesis in oral cavity for a long time, it is important that not only structure materials must have the biocompatibility, but also the prosthesis must be designed for the stress, which is occurred in occlusion, to scatter adequately of load support. Therefore, it is essential to give the consideration about the stress analysis of supporting tissues for higher successful rates. PURPOSE: Recently, many implant manufacturing company produce various taper design of root form implant, the fixture is often selected. However, the stress analysis of taper form fixture still requires more studies. MATERIAL AND METHOD: This study we make the element models that five implant fixture; Branemark system(Nobel Biocare, Gothenberg, Sweden), Camlog system(Altatec, Germany), Astra system(Astra Tech, Sweden), 3i system(Implant Innovations Inc, USA), Avana system(Osstem, Korea)were placed in the area of mandibular first premolar and prosthesis fabricated, which we compared with stress distribution using the three-dimension finite element analysis under two loading condition. RESULTS: This study compares the aspect of stress distribution of each system with the standard of Von mises stress, among many resulted from finite element analysis so that this research gets the following results. 1. In all implant system, oblique loading of maximum Von mises stress of implant, alveolar bone and crown is higher than vertical loading of those. 2. Regardless of loading conditions and type of system, cortical bone which contacts with implant fixture top area has high stress, and cancellous bone has a little stress. under the vertical loading, maximum Von mises stress is more higher in order of Branemark, Camlog, Astra, 3i, Avana. under the horizontal loading, maximum Von mises is more higher in order of Camlog, Branemark, Astra, 3i, Avana.
Bicuspid
;
Crowns
;
Dental Implants
;
Finite Element Analysis
;
Mouth
;
Prostheses and Implants
6.Postoperative radiotherapy for endometrial cancer.
Eun Cheol CHOI ; Jin Hee KIM ; Ok Bae KIM ; Sang Jun BYUN ; Seung Gyu PARK ; Sang Hoon KWON
Radiation Oncology Journal 2012;30(3):108-116
PURPOSE: To investigate the prognostic factors and effectiveness of postoperative radiotherapy alone for endometrial carcinoma. MATERIALS AND METHODS: Sixty four patients with stage I-III endometrial cancer (EC) treated with postoperative radiotherapy alone between January 1989 and December 2008 at the Keimyung University Dongsan Medical Center were chosen for the present study. Typically, total hysterectomy, salpingo-oophorectomy and lymphadenectomy were performed on the patient's pelvis. Total dose from 50.4 Gy to 63 Gy was irradiated at pelvis or extended field. Thirteen patients were treated with Co-60 or Ir-192 intracavitary radiotherapy. Follow-up periods were from 7 to 270 months, with a median of 56 months. RESULTS: Five year overall survival (OS) rate was 58.7%, respectively. Five year disease-free survival (DFS) rate was 59.2%, respectively. In univariate analysis for OS and DFS, stage, menopausal age, type of operation, serosal invasion, and lymph node involvement were found to be statistically significant. Histologic type was marginally significant. In multivariate analysis for OS and DFS, stage, types of operation, histologic type were also found to be statistically significant. Treatment failure occurred in 14 patients. The main pattern of failure was found to be distant metastasis. Time to distant metastasis was from 3 to 86 months (median, 12 months). There were no grade 3 or 4 complications. CONCLUSION: Stage, types of operation, and histologic type could be the predictive prognostic factors in patients. We contemplated postoperative radiation as effective and safe treatment method for EC. Additional treatment would be needed to reduce distant metastasis.
Disease-Free Survival
;
Endometrial Neoplasms
;
Female
;
Follow-Up Studies
;
Humans
;
Hysterectomy
;
Lymph Node Excision
;
Lymph Nodes
;
Menopause
;
Multivariate Analysis
;
Neoplasm Metastasis
;
Pelvis
;
Postoperative Care
;
Prognosis
;
Radiotherapy, Adjuvant
;
Treatment Failure
7.Comparison of Catecholamine Levels in Hemiplegic Patients with and without Reflex Sympathetic Dystrophy.
Eun Guk KIM ; Yong Geol KIM ; Sang Jin BYUN ; Hee Sang KIM ; Kyung Hoi AHN
Journal of the Korean Academy of Rehabilitation Medicine 2000;24(2):193-199
OBJECTIVE: To determine whether the cause of sympathetic dysfunction is due to increased regional sympathetic outflow or receptor supersensitivity to circulating catecholamines in the pathogenesis of reflex sympathetic dystrophy in hemiplegia. METHOD: Ten hemiplegic patients with reflex sympathetic dystrophy were instructed to refrain from smoking or using caffeine and alcohol, and medications that influence catecholamine metabolism were witheld for 24 hours before blood sampling. Patients with cardiovascular disease, diabetes or abnormal liver and renal function tests were excluded from the study. Patients with a history of sympathectomy were also excluded. Ten hemiplegic patients without reflex sympathetic dystrophy served as the control group. Both groups of patients rested in supine position in a quiet room for 30 minutes. A needle with heparin cap was inserted into the dorsal venous arches of the affected hand and patients rested for another 20 minutes, after which blood was drawn through the heparin cap. The blood samples were assayed using high-performance liquid chromatography (HPLC) and norepinephrine and epinephrine were detected electrochemically. 24 hour urine was collected during rest and vanillylmandelic acid (VMA) and metanephrine were also detected using HPLC. RESULTS: The mean plasma norepinephrine levels were 1.05 0.24 ng/ml and 0.47 0.06 ng/ml in RSD affected and unaffected groups respectively, and the plasma norepinephrine level was significantly higher in the patient group with reflex sympathetic dystrophy (p<0.05). The plasma epinephrine and 24-hour urine VMA and metanephrine levels were not significantly different in two groups. CONCLUSION: These results may support a hypothesis of increased regional sympathetic outflow in the pathogenesis of reflex sympathetic dystrophy in hemiplegia.
Caffeine
;
Cardiovascular Diseases
;
Catecholamines
;
Chromatography, High Pressure Liquid
;
Chromatography, Liquid
;
Epinephrine
;
Hand
;
Hemiplegia
;
Heparin
;
Humans
;
Liver
;
Metabolism
;
Metanephrine
;
Needles
;
Norepinephrine
;
Plasma
;
Reflex Sympathetic Dystrophy*
;
Reflex*
;
Smoke
;
Smoking
;
Supine Position
;
Sympathectomy
;
Vanilmandelic Acid
8.Long-term Results of Breast-conserving Surgery and Radiation Therapy in Early Breast Cancer.
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2009;27(3):153-162
PURPOSE: To evaluate the long-term results after breast-conserving surgery and radiation therapy in early breast cancer in terms of failure, survival, and cosmesis. MATERIALS AND METHODS: One hundred fifty-four patients with stage I and II breast cancer were treated with conservative surgery plus radiotherapy between January 1992 and December 2002 at the Keimyung University Dongsan Medical Center. According to TNM stage, 93 patients were stage I, 50 were IIa, and 11 were IIb. The affected breasts were irradiated with 6 MV photons to 50.4 Gy in 28 fractions over 5.5 weeks with a boost irradiation dose of 10~16 Gy to the excision site. Chemotherapy was administered in 75 patients and hormonal therapy in 92 patients with tamoxifen. Follow-up periods were 13~179 months, with a median of 92.5 months. RESULTS: The 5- and 10-year overall survival rates were 97.3% and 94.5%, respectively. The 5- and 10-year disease-free survival (5YDFS and 10YDFS, respectively) rates were 92.5% and 88.9%, respectively; the ultimate 5YDFS and 10YDFS rates after salvage treatment were 93.9% and 90.2%, respectively. Based on multivariate analysis, only the interval between surgery and radiation therapy (< or = 6 weeks vs. >6 weeks, p=0.017) was a statistically significant prognostic factor for DFS. The major type of treatment failure was distant failure (78.5%) and the most common distant metastatic site was the lungs. The cosmetic results were good-to-excellent in 96 patients (80.7%). CONCLUSION: Conservative surgery and radiation for early stage invasive breast cancer yielded excellent survival and cosmetic results. Radiation therapy should be started as soon as possible after breast-conserving surgery in patients with early breast cancer, ideally within 6 weeks.
Breast
;
Breast Neoplasms
;
Cosmetics
;
Disease-Free Survival
;
Follow-Up Studies
;
Humans
;
Lung
;
Mastectomy, Segmental
;
Multivariate Analysis
;
Photons
;
Survival Rate
;
Tamoxifen
;
Treatment Failure
9.Combined Surgical and Orthodontic Treatment of Bimaxillary Dento-Alveolar Protruvion: A Report of Case.
Sang Kil BYUN ; Hee Kyung LEE ; Byung Rho CHIN ; Meung Chul OH ; Tae Ju KIM ; Young Joon KIM
Yeungnam University Journal of Medicine 1985;2(1):271-279
No abstract available.
10.A Cases of Familial Spastic Paraplegia (FSP).
Jung Sang HA ; Won Hee CHOI ; Choong Seo PARK ; Yung Joo BYUN ; Bo Wan SEO
Journal of the Korean Neurological Association 1985;3(2):291-297
We present a family of FSP with review of literatures. Seeligmuller (1876) and Strumpell (1880) were the first to describe familial case of spastic paraplegia characterized by progressive weakness and spasticity of the lower limbs with little or no involvement of the upper extremities. This syndrome is heterogenous in inheritance, age of onset, severity and associated signs. A pure type without complications has been named "Strumpell's FSP". We have recently experienced a case of 17 years old male who had bilateral weakness and stiffness of lower extremities, and gait disturbance with family history. Differential diagnosis, particularly with familial amyotrophic lateral sclerosis, is discussed.
Adolescent
;
Age of Onset
;
Amyotrophic Lateral Sclerosis
;
Diagnosis, Differential
;
Gait
;
Humans
;
Lower Extremity
;
Male
;
Muscle Spasticity*
;
Paraplegia*
;
Upper Extremity
;
Wills