1.A STUDY ON FRACTURE STRENGTH OF COLLARLESS METAL CERAMIC CROWN WITH DIFFERENT METAL COPING DESIGN.
Jong Wook YUN ; Jae Ho YANG ; Ik Tae CHANG ; Sun Hyung LEE ; Hun Young CHUNG
The Journal of Korean Academy of Prosthodontics 1999;37(4):454-464
The metal ceramic crown is currently the most popular complete veneer restoration in dentistry, but in many cases, the metal cervical collar at the facial margin is unesthetic and unacceptable. Facial porcelain margin has been used in place of it. But this dose not solve the problems, such as dark gingival discoloration and cervical opaque reflection of porcelain veneer. Recently, metal copings which were designed to terminate its labio-cervical end on the axial walls coronal to the shoulder have been clinically used to solve the esthetic problem of metal ceramic crown. But in this design, porcelain veneer of labio-cervical area which is not supported by metal may not be able to resist the stress during cementation and mastication. The purpose of this study was to evaluate fracture strength and fractured appearance of crowns according to different coping designs. A resin maxillary left central incisor analogue was prepared for a metal ceramic crown, and metal dies were made with duplication mold. Metal copings were made and assigned to one of four groups based on facial framework designs: group 1, coping with 0.5mm metal collar; group 2, metal extended to the shoulder; group 3, metal extended to 1 mm coronal to the shoulder; group 4, metal extended to 2mm coronal to the shoulder. Copings and crowns were adjusted to be same size and thickness, and cemented to metal dies with zinc phosphate cement by finger pressure. Fracture strength was measured with Instron Universal Testing Machine. Metaldies were anchored in Three-way-vice at 3mm below finish line and at 130degree inclined to the lone axis of the crown. Load was directed lingually at 2mm below midincisal edge. Load value at initial crack and at catastrophic fracture was recorded. The results obtained were as follows: 1. Fracture strength values at initial crack were higher in groups 1, 2 than in groups 3, 4 but this difference was not statistically significant(P<0.05). 2. Conventional metal collared crown had greater catastrophic fracture strength than any other collarless crowns. 3. The greater the labial metal coping reduction, the lower the catastrophic fracture strength of crowns but when more than 1mm of labial metal reduction was done, the difference in strengths was not statistically significant(p<0.05). 4. The strongest collarless coping design was group 2.
Axis, Cervical Vertebra
;
Cementation
;
Ceramics*
;
Crowns*
;
Dental Porcelain
;
Dentistry
;
Fingers
;
Fungi
;
Incisor
;
Mastication
;
Shoulder
;
Zinc Phosphate Cement
2.Urinary Incontinence in the Patients with Dementia.
Kyu Sung LEE ; Wook OH ; Jong Min YUN ; Dae Kyung KIM ; Duk Lyul NA
Korean Journal of Urology 2000;41(8):1004-1011
No abstract available.
Dementia*
;
Humans
;
Urinary Incontinence*
3.Effect of functional endoscopic sinus surgery on olfactory disturbance caused by bilateral chronic sinusitis with nasal polyposis.
Chul Min PARK ; Sung Tae HONG ; Wan Suk JUN ; Jong Wook YUN ; Jae Seon LIM
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(4):693-697
No abstract available.
Sinusitis*
4.Bromfenac as Adjunctive Treatment with Intravitreal Bevacizumab in Branch Retinal Vein Occlusion of Macular Edema
Jong Myoung YUN ; Young Wook CHO ; Jong Won MOON
Journal of the Korean Ophthalmological Society 2020;61(2):183-189
PURPOSE: To evaluate the effectiveness of 0.1% topical bromfenac as an adjunctive treatment with intravitreal bevacizumab (IVB) injection for branch retinal vein occlusion (BRVO) patients.METHODS: We retrospectively evaluated 68 eyes of 68 patients with macular edema (ME) secondary to BRVO who were treated with IVB injection and followed up for at least 12 months. Of the 68 eyes, 38 were treated with IVB combined with 0.1% topical bromfenac and 30 were treated with IVB alone. IVB reinjection was performed in cases of recurrence. The primary outcome measurement was the number of IVB injections. Changes in the best-corrected visual acuity (BCVA) and central foveal thickness (CFT) during the 12-month follow-up were compared.RESULTS: There was no significant difference in the BCVA or CFT between the two groups at the initial and final examinations. However, the number of IVB injections was significantly lower in the 0.1% bromfenac-treated eyes (p < 0.01) than in the control eyes (4.1 ± 0.7 vs. 5.0 ± 0.6 times).CONCLUSIONS: Compared to IVB monotherapy, topical bromfenac as an adjunctive treatment with IVB injection of eyes with ME secondary to BRVO did not affect visual outcomes, but it reduced the number of IVB injections.
Bevacizumab
;
Follow-Up Studies
;
Humans
;
Macular Edema
;
Recurrence
;
Retinal Vein Occlusion
;
Retinal Vein
;
Retinaldehyde
;
Retrospective Studies
;
Visual Acuity
5.Systemic Lupus Erythematosus-like paraneoplastic syndrome associated with lung cancer.
Yun Jong LEE ; Ki Chul SHIN ; Seong Wook KANG ; Chang Wan HAN ; Yeong Wook SONG
Korean Journal of Medicine 1998;54(6):833-839
Systemic lupus erythematosus (SLE) has been described very rarely in association with underlying malignancy. We experienced a 68-year-old male with systemic erythematosus lupus associated with squamous cell lung cancer. He had radiation therapy as a primary treatment modality. Ten months after the radiation therapy, he suffered from intermittent fever, myalgia, multiple arthralgia, dry cough, and dyspnea. He had leukocytosis and lymphopenia. Anti-nuclear antibody was positive. He had bilateral pleural effusion, pericardial effusion, and proteinuria (2405 mg/day). He had peripheral neuropathy with lower extremity weakness. There was no evidence of recurrence of lung cancer. He was treated with naproxen (1 gm/day) with symptomatic improvement. We describe a clinical course of paraneoplastic SLE in patient with lung cancer, and review the literatures.
Aged
;
Arthralgia
;
Cough
;
Dyspnea
;
Fever
;
Humans
;
Leukocytosis
;
Lower Extremity
;
Lung Neoplasms*
;
Lung*
;
Lupus Erythematosus, Systemic
;
Lymphopenia
;
Male
;
Myalgia
;
Naproxen
;
Paraneoplastic Syndromes*
;
Pericardial Effusion
;
Peripheral Nervous System Diseases
;
Pleural Effusion
;
Proteinuria
;
Recurrence
6.A Case of Infectious Arthritis due to Staphylococcus lugdunensis in Seronegative Rheumatoid Arthritis, Diabetes Mellitus Patient, after Intraarticular Hyaluronic Acid Injection.
Ji Wook CHOI ; Yeong Seop YUN ; Young Jae DOO ; Kyung Joong KIM ; Jong Wook KIM ; Ji Min OH
Journal of Rheumatic Diseases 2016;23(5):321-325
Intra-articular hyaluronic acid injections for symptomatic treatment of osteoarthritis are widely used but can result in complications, such as infectious arthritis. Staphylococcus lugdunensis is a common normal skin flora but can cause severe infectious disease, such as infective endocarditis. We present the first report of infectious arthritis caused by methicillin-sensitive S. lugdunensis after intra-articular hyaluronic acid injection in an immunocompromised patient in Korea.
Arthritis, Infectious*
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Arthritis, Rheumatoid*
;
Communicable Diseases
;
Diabetes Mellitus*
;
Endocarditis
;
Humans
;
Hyaluronic Acid*
;
Immunocompromised Host
;
Korea
;
Osteoarthritis
;
Skin
;
Staphylococcus lugdunensis*
;
Staphylococcus*
7.A Case of Jaccud's Arthropathy in a Patient with Idiopathic Parkinsonism.
Yun Jong LEE ; Ki Chul SHIN ; Seong Wook KANG ; Eun Bong LEE ; Han Joo BAEK ; Yeong Wook SONG
The Journal of the Korean Rheumatism Association 1998;5(2):256-260
No abstract available.
Hand Deformities
;
Humans
;
Parkinsonian Disorders*
8.Development of Rheumatoid Arthritis during Treatment of Cushing's Disease.
Han Joo BAEK ; Ki Chul SHIN ; Yun Jong LEE ; Seong Wook KANG ; Eun Bong LEE ; Yeong Wook SONG
Korean Journal of Medicine 1998;55(2):245-249
Exogenous glucocorticoid has anti-inflammatory effect to reduce symptoms and signs of rheumatoid arthritis. However there are few reports about the role of endogenous glucocorticoid in rheumatoid arthritis. Recently we experienced a case of rheumatoid arthritis developed in a female patient with Cushing's disease as her cortisol level decreased during medical management of hypercortisolemia. She underwent trans-sphenoidal surgery for Cushing's disease (pituitary microadenoma). Six years after surgery she had disease recurrence and received brain radiotherapy and ketoconazole medication. Four years later she developed seronegative rheumatoid arthritis. 24 hour urine cortisol level was below the normal value at that time. Polyarthralgia improved with prednisolone (5mg/day). But polyarthralgia was aggravated as cortisol level decreased below the normal value after prednisolone was discontinued. This case and previous reports suggest that the development and aggravation of rheumatoid arthritis is associated with relative cortisol deficiency, or alteration of balance between neuroendocrine system(hypothalamic- pituitary-adrenal axis) and inflammatory process.
Arthralgia
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Arthritis, Rheumatoid*
;
Brain
;
Female
;
Humans
;
Hydrocortisone
;
Ketoconazole
;
Prednisolone
;
Radiotherapy
;
Recurrence
;
Reference Values
9.A Clinical Study on the Anti-Hypertensive Effect of Fosinopril in Mild to Moderate Hypertensive Patients.
Jong Won HA ; Sang Wook LIM ; Namsik CHUNG ; Won Heum SHIM ; Seoug Yun CHO ; Sung Soon KIM
Korean Circulation Journal 1994;24(1):175-181
BACKGROUND: The angiotensin-converting enzyme inhibitors have been found to be safe and efficacious in the treatment of essential hypertension. Fosinopril is the first angiotensin-converting enzyme inhibitor from a new class of agents containing phosphorus. This drug is known to be metabolized to almost and equal extent by the hepatic and renal pathways. METHODS: This study was performed to investigate the efficacy and safety of oral fosinopril, a new class of phosporus-containing angiotensin converting enzyme inhibitor, on essential hypertension. A single daily dose of 10mg to 20mg fosinopril was administered in 21 hypertensive patients with diastolic blood pressure in the range of 95mmHg-115mmHg while off all other anti-hypertensive agents for 10 weeks. Blood pressure and heart rate were measured every 4 weeks. The complete blood count, blood chemistry by SMA-12, serum electrolytes and urinalysis were performed at 12th week of therapy. RESULTS: 1) Baseline systolic and diastolic blood pressures after 2 weeks of placebo at sitting position were 158.8+/-15.7 and 99.4+/-6.3mmHg respectively. There was a statistcally significant reduction of blood pressure after 4 week treatment of fosinopril which was maintained up to 12 weeks of follow-up(158.8+/-15.7-99.4+/-6.3mmHg vs 139.3+/-18.2/86.6+/-10.3mmHg, p<0.05). 2) The proportion of responders defined by diastolic blood pressures less than 90mmHg or decline more than 10mmHg at 4, 8 and 12 weeks after treatment with fosinopril were 90.5, 95.2, and 95.2% respectively. 3) THere were no significant changes in blood chemistry, serum electrolytes, hematologic findings and heart rate over the treatment period. 4) Three patients experienced severe non-productive cough that required to discontinue the medication. CONCLUSION: In patients with mild to moderate hypertension, once-daily fosinopril(10mg and 20mg) provided significant anti-hypertensive effects without serious side effects. The 10mg dose was effective in majority of patients and may be considered as a starting dose.
Angiotensin-Converting Enzyme Inhibitors
;
Antihypertensive Agents
;
Blood Cell Count
;
Blood Pressure
;
Chemistry
;
Cough
;
Electrolytes
;
Fosinopril*
;
Heart Rate
;
Humans
;
Hypertension
;
Peptidyl-Dipeptidase A
;
Phosphorus
;
Urinalysis
10.A Clinical Study On the Anti-Hypertensive Effect of Cicletanine in Mild to Moderate Hypertensive Patients.
Jong Won HA ; Sang Wook LIM ; Byung Soo KIM ; Namsik CHUNG ; Won Heum SHIM ; Seung Yun CHO ; Sung Soon KIM
Korean Circulation Journal 1994;24(3):507-515
BACKGROUND: Cicletanine bydrochloride is a newly developed anti-hypertensive agent. The presence of a furopyridine group characterizes its uncommon chemical structure as an antihypertensive molecule. This clinical trial was performed to confirm the efficacy and safety of cicletanine for the treatment of hypertension as a monotherapy. METHODS: In order to investigate the efficacy and safety of oral cicletanine, a now class of antihypertensive durgs, the furopyridines, on essential hypertension, a single daily dose of 50mg to 100mg cicletanine was administered in 46 hypertensive patients with diastolic blood pressure in the range of 95mmHg-115mmHg. The patients were asked to cut off other anti hypertensive agents for 10 weeks prior to this clinical trial. Blood pressure and heart rate were measured every 4 weeks. The complete blood count, blood chemistry done by SMA-12, serum electrolytes and urinalysis were performed at the 12th week of therapy. RESULTS: 1) Baseline blood pressures after 2 weeks of placebo at sitting and standing positions were 158.7+/-16.1/102.9+/-6.2 and 148.7+/-14.5/102.7+/-6.7mmHg, respectively. The overall slope which represents the tendency of blood pressure decline over the treatment period with cicletanine for all the patients in each position are as follows ; -0.726(SE : 0.150) for sitting systolic blood pressure(BP), -0.390(SE : 0.080) for sitting diastolic BP, -0.214(SE : 0.183) for standing systolic BP and -0.341(SE : 0.139) for standing diastolic BP. 2) The slope of sitting systolic BP line in cicletanine 100mg treated group was significantly stiffer than that of cicletanine 50mg treated group(-0.445 vs -1.021, p=0.0336). 3) There were no significant interval changes in heart rate over the treatment period. 4) There were no significant interval changes in blood chemistry, electrolytes, hematologic findings and urinalysis over the treatment period. 5) Several side effects were observed in six patients(epigastric discomfort in 4, easy fatigue and insomnia in one patient, respectively). CONCLUSION: Treatment with cicletanine was well-tolerated and the incidence of side effects was relatively low. Because of its unique anti-hypertensive mechanism and moderated antihypertensive effects, cicletanine may be well suited in the treatment of hypertension combined with other classes of antihypertensive agents.
Antihypertensive Agents
;
Blood Cell Count
;
Blood Pressure
;
Chemistry
;
Electrolytes
;
Fatigue
;
Heart Rate
;
Humans
;
Hypertension
;
Incidence
;
Sleep Initiation and Maintenance Disorders
;
Urinalysis