1.Analysis of gene products induced by phosphate starvation in enteric bacteria.
In A DOH ; Tae Yoon LEE ; Sung Kwang KIM
Journal of the Korean Society for Microbiology 1992;27(6):517-524
No abstract available.
Enterobacteriaceae*
;
Starvation*
2.Dislodgement resistance of modified resin-bonded fixed partial dentures utilizing tooth undercuts: an in vitro study.
The Journal of Advanced Prosthodontics 2009;1(2):85-90
STATEMENT OF PROBLEM: Over the years, resin-bonded fixed partial dentures (RBFPDs) have gone through substantial development and refinement. Several studies examined the biomechanics of tooth preparation and framework design in relation to the success rate of RBFPDs and considered retention and resistance form essential for increase of clinical retention. However, these criteria required preparations to be more invasive, which violates not only the original intentions of the RBFPD, but may also have an adverse effect on retention due to loss of enamel, an important factor in bonding. PURPOSE: The object of this in vitro study was to compare the dislodgement resistance of the new types of RBFPDs, the conventional three-unit fixed partial denture, and conventional design of RBFPD (Maryland bridge). MATERIAL AND METHODS: Fifty resin mandibular left second premolars and second molars were prepared on dentiforms, according to the RBFPD design. After model fabrication (five group, n = 10), prostheses were fabricated and cemented with zinc phosphate cement. After cementation, the specimens were subjected to tensile loading at a cross head speed of 4 mm/min in a universal testing machine. The separation load was recorded and analyzed statistically using one-way analysis of variance followed by Duncan's multiple range test. RESULTS: Group V, the pin-retained RBFPDs, had the highest mean dislodgement resistance, whereas specimens of group II, the conventional RBFPDs, exhibited a significantly lower mean dislodgement resistance compared to the other 4 groups (P < .05). There were no significant differences between group I, III, and IV in terms of dislodgement resistance (P > .05). Group V had the highest mean MPa (N/mm2) (P < .05). There was no significant difference between groups I, II, III and IV (P > .05). CONCLUSION: Within the limits of the design of this in vitro study, it was concluded that: 1. The modified RBFPDs which utilizes the original tooth undercuts and requires no tooth preparation, compared with the conventional design of RBFPDs, has significantly high dislodgement resistance (P < .05). 2. The modified RBFPDs which utilizes the original tooth undercuts and requires minimal tooth preparation, compared with the conventional FPDs, has significantly no difference in retention and dislodgement resistance)(P > .05). 3. The pin-retained FPDs showed a high dislodgement resistance compared to the conventional three-unit FPDs (P < .05).
Bicuspid
;
Biomechanics
;
Cementation
;
Collodion
;
Dental Enamel
;
Denture, Partial, Fixed
;
Head
;
Intention
;
Molar
;
Phosphates
;
Prostheses and Implants
;
Retention (Psychology)
;
Tooth
;
Tooth Preparation
;
Zinc Compounds
;
Zinc Phosphate Cement
3.Two Cases of Erythema Multiforme Following Antibiotics Treatment.
Ho Suk DOH ; Sam Beom LEE ; Byung Soo DO
Journal of the Korean Society of Emergency Medicine 1998;9(2):341-346
Erythema multiforme(EM) is related disorders of skin and mucous members which is typically associated with antecedent medications or infections, etc. EM is an erythematous maculopapular cutaneous eruption of variable form. However, the pathophysiology of the EM remains obscure. Treatment at present is symptomatic and supportive. In conclusion, the authors report two cases of EM that complained of the erythematous maculopapular cutaneous eruption following antibiotics treatment with the review of literatures.
Anti-Bacterial Agents*
;
Erythema Multiforme*
;
Erythema*
;
Skin
4.Poststreptococcal Glomerulonephritis without Abnormality of Urine.
Byung Hwan LEE ; Byung Lynl LEE ; Kwang Chan DOH ; Sung Il AHN ; Hyun Soon LEE
Journal of the Korean Pediatric Society 1982;25(10):1073-1077
No abstract available.
Glomerulonephritis*
5.Case of Variant Angina diagnosed with 24-hour Holter monitoring.
Kyung Il PARK ; Sung Yoon LEE ; Joon Hyung DOH ; June NAMGUNG ; Won Ro LEE
Korean Journal of Medicine 2005;68(2):243-243
No abstract available.
Electrocardiography, Ambulatory*
6.Development of diagnostic method of helicobacter pylori infection: I. molecular cloning and DNA sequencing of urease.
Cheol Keun PARK ; Woo Kon LEE ; Young Mi DOH ; Myung Je CHO ; Kwang Ho RHEE
Journal of the Korean Society for Microbiology 1991;26(6):541-552
No abstract available.
Cloning, Molecular*
;
DNA*
;
Helicobacter pylori*
;
Helicobacter*
;
Sequence Analysis, DNA*
;
Urease*
7.A Case of Cystic Teratoma on the Floor of the Mouth in Neonate.
Ki Cheol CHOI ; Seung Hyun LEE ; Sang Kee PARK ; Nam Yong DOH ; Ho Jong JEON
Journal of the Korean Society of Neonatology 1997;4(2):267-271
Cystic teratoma on the floor of the mouth is infrequent disease and known as congenital origin. Teratoma has no sex distribution. Treatrnent of the cystic teratoma is completely surgical excision and recurrence is rare. The authors have experienced a case of cystic teratoma on the floor of the mouth in neonate. We reported this case with review of literatures.
Humans
;
Infant, Newborn*
;
Mouth*
;
Recurrence
;
Sex Distribution
;
Teratoma*
8.Characteristics of methicillin-resistant staphylococcus aureus isolates from various clinical materials.
Yoon Jeong DOH ; Sang Nae CHO ; Yunsop CHONG ; Samuel Y LEE
Korean Journal of Clinical Pathology 1991;11(2):425-434
No abstract available.
Methicillin Resistance*
;
Methicillin-Resistant Staphylococcus aureus*
9.Modified resin-bonded fixed partial dentures utilizing tooth undercuts: a clinical case study.
The Journal of Korean Academy of Prosthodontics 2011;49(2):106-113
PURPOSE: The object of this clinical study was to evaluate the short-term outcome of modified resin-bonded fixed partial dentures which utilizes the original tooth undercuts and different path of insertion of components. MATERIALS AND METHODS: 71 units of modified RBFPDs that were used in 21 patients at the Department of Prosthodontics, College of Dentistry, Yonsei University were evaluated. The follow-up period was up to 25 months, the mean being 7 months. Survival rate, mobility, percussion, probing depth, bleeding on probing, plaque index was recorded and radiographs were taken to monitor alveolar bone loss. RESULTS & CONCLUSION: Within the limits of this short term retrospective study, it was concluded that: 1. No mechanical failure such as debonding or fracture of the framework was found during the follow-up period. 2. The periodontal apparatus was stable and no clinical change was observed after prosthetic treatment. 3. No significant marginal bone loss was found in the radiographic evaluation.
Dentistry
;
Denture, Partial, Fixed
;
Follow-Up Studies
;
Hemorrhage
;
Humans
;
Organothiophosphorus Compounds
;
Percussion
;
Prosthodontics
;
Retrospective Studies
;
Survival Rate
;
Tooth
10.Seasonsits of the First Onset in Schizophrenia and Mood Disorder: Mainly in Paranoid Schizophrenia and Bipolar I Disorder.
Bum Jeong LEE ; Doh Joon YOON ; Dong Yul OH
Journal of Korean Neuropsychiatric Association 1997;36(6):1115-1124
This study aimed 1) at determining the seasonal pattern of the first onset and 2) at examining different demographic and clinical factors by the seasonality of first onset, for shizophrenia, mood disorder and subtypes of each diagnosis. Finally, the 52 subjects with paranoid schizophrenia were selected from all patients who fulfilled DSM-IV criteria far schizophrenia who had been admitted to the National Seoul Mental Hospital from March 1994 to February 1995. And the 44 subjects with bipolar I disorder were selected from all patients who fulfilled DSM-IV criteria for mood disorder who had been admitted to the hospital from March 1994 to February 1996. This study was done by reviewing the hospital records about season of the first outset, demographic factors(sex, age, occupation, educated period, religion, marital status, residence and socioeconomic status) and clinical factors(age at the first onset, duration of illness, family history, length of admission, frequency of admission and treatment result). The seasonal pattern of the first onset and the different demographic and clinical factors by the season of the first onset in paranoid shizophrenia and I disorder were analyzed. The results were as follows: 1) There was no significant seasonal variation of the first onset for paranoid schizophrenia. 2) There was a significant seasonal variation of the first onset with a maximum in spring for bipolar I disorder. 3) There was no significant seasonal variation of the first onset in case of bipolar I disorder that began with the manic episode. 4) There was nonsignificant seasonal tendency to peak in spring/summer in the case of the first manic episode for bipolar I disorder. 5) There were no significant differences in demographic and clinical factors by the season of the first onset for paranoid schizophrenia and bipolar I disorder.
Diagnosis
;
Diagnostic and Statistical Manual of Mental Disorders
;
Hospital Records
;
Hospitals, Psychiatric
;
Humans
;
Marital Status
;
Mood Disorders*
;
Occupations
;
Schizophrenia*
;
Schizophrenia, Paranoid*
;
Seasons
;
Seoul