1.COMPARISON OF THE ACCURACY OF STONE CASTS MADE FROM ALGINATE IMPRESSION MATERIAL BY MIXING METHODS AND APPLICATION OF TRAY ADHESIVE.
Jin Hyung KIM ; Moon Kyu CHUNG
The Journal of Korean Academy of Prosthodontics 2001;39(5):492-501
The use of alginate impression materials today is prevalent because of its efficiency and simplicity in clinical settings. Unfortunately, the simplicity of the procedure tends to lull the dentist into a sense of well-being, and lead him into using careless or sloppy technique. Alginate impression materials are used to fabricate diagnostic and preliminary casts, and the final cast. Incorrect use of this material is known to affect the accuracy of the final prosthesis. The purpose of this study was to compare the effect of different mixing methods of alginate impression material and tray adhesive on the accuracy of the stone cast produced by each method. A total of 30 stone casts were produced by using 3 different types of mixing methods (10 stone cast for each mixing method, respectively) The first method utilized an automatic-mixing machine to mix alginate while the second method was carried out manually, strictly following manufacturer's instructions. The third method also involved manual mixing, but did not follow the manufacturer's instructions and was done in a random fashion. Also, 20 additional stone casts were produced by using alginate with or without tray adhesives were included in the study to evaluate effects of tray adhesives on the accuracy of alginate impression. 10 stone casts were produced by adding tray adhesives to the interior surface of the impression tray prior to taking the impression. The other 10 excluded this step. A total of 50 stone casts were analyzed by the three-dimensional measuring machine to measure and compare the dimensional changes of the impression material of each group. The results are as follows. 1. No significant difference was found between the automatic mixing group and the manually-mixing group(p>0.05). 2. For the group that followed manufacturer's instructions, less dimensional changes were recorded than the group that didn't in measuring distance d4(p<0.05) 3. The group that used tray adhesives showed less dimensional changes(p<0.05). The findings revealed that mechanical methods of mixing alginate impression materials had little influence on dimensional changes. However, it is proven that following manufacturers instructions in alginate impression taking is an important step in acquiring accurate impressions and tray adhesives may play an important role in enhancing the results.
Adhesives*
;
Dentists
;
Humans
;
Prostheses and Implants
2.X-ray findings of bronchogenic cyst
Journal of the Korean Radiological Society 1986;22(3):339-345
Bronchogenic cyst is relatively uncommon disease in clinical practice, 15 cases of bronchogenic cyst wereobtained and X-ray findings were analized retrospectively. The results are as follows: 1. 5 patients were symptomfree (30%) and common symptoms and signs were hemoptysis, dyspnea, chest pain in order of frequency. 2. 9 patientswere female and 6 patients were male. The most common age group was 21 years old to 30 years old(40%) and the nexcomon age group was 31 years old to 40 years old (20%) 3. 9 cases of intrapulmonary bronchogenic cyst and 6 casesof mediastinal bronchogenic cyst were obtained. 4. The average size of bronchogenic cyst was about 8x7x6cm. 5. Thecommon location of intrapulmonary bronchogenic cyst was lower lobe (56%) and common x-ray findings was thin walledcyst with air fluid level(78%). 6. Bronchography was performed in 3 cases of intrapulmonary bronchogenic cyst andonly one case demonstrated comunication with bronchus. 7. All 6 cases of mediastinal bronchogenic cyst showed wellmarginated soft tissue mass density. 3 cases were performed CT scanning and average precontrast Hounsfield numberwas 51 unit. No case showed contrast enhancement.
Bronchi
;
Bronchogenic Cyst
;
Bronchography
;
Chest Pain
;
Dyspnea
;
Female
;
Hemoptysis
;
Humans
;
Male
;
Retrospective Studies
;
Tomography, X-Ray Computed
3.Systemic Cytotoxic Drugs Depletes Epidermal Langerhans Cells in Guinea Pigs.
Jin Wou KIM ; Jeung Kyu KIM ; Won HOUH
Annals of Dermatology 1989;1(1):10-15
No abstract available.
Animals
;
Guinea Pigs*
;
Guinea*
;
Langerhans Cells*
4.Preventing Varus Deformity in Senile Patients with Proximal Humerus Fractures and Poor Medial Support.
Young Kyu KIM ; Suk Woong KANG ; Jin Woo KIM
Clinics in Shoulder and Elbow 2016;19(4):216-222
BACKGROUND: We investigated the effectiveness of fibular strut allograft augmentation of proximal humerus fractures to prevent varus deformity in patients over the age of 65 years with insufficient medial support. METHODS: We analyzed the clinical and radiological outcomes of locking plate fixation with adjunct fibular strut allograft augmentation in 21 patients with proximal humeral fractures. The inclusion criteria were age (65-year-old or older); presence of severe medial comminution; inadequate medial support; and those who could participate in at least a one year follow-up. The average age was 76.4 years. We analyzed each patient's Constant score, our indicator of clinical outcome. As radiological parameters, we analyzed time-to-bone union; restoration of the medial hinge; difference between the immediately postoperative and the last follow-up humeral neck-shaft angles;; and anatomical reduction status, which was assessed using the Paavolainen method. RESULTS: A successful bone union was achieved in all patients at an average of 11.4 weeks. We found that the average Constant score was 74.2, showing a satisfactory outcome. The average difference in the humeral neck-shaft angles between the immediately postoperative time-point and at the final follow-up was 3.09°. According to the Paavolainen method, the anatomical reduction was rated excellent. The medial hinge was restored in 14 of 21 patients. Although we did not find evidence for osteonecrosis, we found that a single patient had a postoperative complication of screw cut-out. CONCLUSIONS: Fibular strut allografting as an adjunct treatment of proximal humeral fractures may reduce varus deformity in patients with severe medial comminution.
Allografts
;
Congenital Abnormalities*
;
Follow-Up Studies
;
Humans
;
Humerus*
;
Methods
;
Osteonecrosis
;
Postoperative Complications
;
Shoulder Fractures
;
Transplantation, Homologous
5.Radiographic findings of mycoplasma pneumonia in adult.
Sang Jin KIM ; Mi Hye KIM ; Kyu Ok CHOE
Journal of the Korean Radiological Society 1991;27(3):373-376
No abstract available.
Adult*
;
Humans
;
Mycoplasma*
;
Pneumonia, Mycoplasma*
6.The Effect of Pelvic Floor Muscle Training with Biofeedback and Functional Electrical Stimulation for Genuine Stress Urinary Incontinence.
Jong Min YUN ; Sang Jin KIM ; Kyu Sung LEE
Korean Journal of Urology 2000;41(5):627-632
No abstract available.
Biofeedback, Psychology*
;
Electric Stimulation*
;
Pelvic Floor*
;
Urinary Incontinence*
7.CT findings of thoracic involvement of lymphoma.
Hee Jin KIM ; Kyu Ok CHOE ; Hee Kyung CHO
Journal of the Korean Radiological Society 1993;29(2):223-229
Chest CT scans of 70 patents with malignant lymphoma were reviewed to evaluate the thoacic manifestation of malignant lymphoma. Sixteen patients had Hodgkin's disease and 54 patients had non-Hodgkin's lymphoma. The thoracic involvement of malignant lymphoma was observed i 47 patients (67.1%) and 11 of these patients had Hodgkin's disease, and 36 had non-Hodgkin's lympoma. The most common finding was mediastinal lymphadenopathy and the most frequently involved sites were anterior mediastinal and paratracheal lymph nodes. Pulmonary parenchymal involvement was seen in 11 patients (15.7%), and CT scan showed thickening of bronchovascular bundle, parenchymal consolidation and nodules. Pleural effusion was seen in 18 patients (25.7%), however, without any evidence of parietal pleural thickening in all cases. Involvement of chest wall and breast was seen in two patient(2.9%). The data obtained through the current study showed no differences from those of previous reports, except the fact that there was no CT evidence of pleural thickening in patients who had pleural effusion.
Breast
;
Hodgkin Disease
;
Humans
;
Lymph Nodes
;
Lymphatic Diseases
;
Lymphoma*
;
Lymphoma, Non-Hodgkin
;
Pleural Effusion
;
Rabeprazole
;
Thoracic Wall
;
Tomography, X-Ray Computed
8.Follow-up Study of Hyperthyrotropinemia Detected by Neonatal Screening Test.
Kyung Hoon PAIK ; Sung Hye KIM ; Dong Kyu JIN
Journal of Korean Society of Pediatric Endocrinology 2002;7(2):215-220
PURPOSE: To understand natural course of transient hyperthyrotropinemia, so that the unnecessary treatment could be avoided. METHODS: Total 182 healthy newborns whose TSH levels in newborn screening test had been higher than 20 microIU/mL were recalled. Their serum levels of TSH, T4, free T4 were checked. RESULTS: Among 182 newborns, 10 newborns had congenital hypothyroidism. 68.1 % of healthy newborns who had high TSH levels were normalized within 2 months and all of the rests were normalized within 5 months. CONCLUSION: Transient hyperthyrotropinemia in newborns improves spontaneously. The unnecessary treatment of transient hyperthyrotropinemia should be avoided.
Congenital Hypothyroidism
;
Follow-Up Studies*
;
Humans
;
Infant, Newborn
;
Mass Screening
;
Neonatal Screening*
9.CT findings of small cell bronchogenic carcinoma.
Chang Su AHN ; Sang Jin KIM ; Kyu Ok CHOE
Journal of the Korean Radiological Society 1991;27(3):358-362
No abstract available.
Carcinoma, Bronchogenic*
10.Pulsus alterans.
Nam Ho KIM ; Seok Kyu OH ; Jin Won JEONG
Korean Journal of Medicine 2002;62(6):685-686
No abstract available.