This study was performed to investigate the retrievability of the cementation type implant abutments. The cements used in this study were Cavitec, Tembond and Zine Phosphate Cement. The types of surface conditioning were no treatment, 50 microne sandblasting, 250 microne sandblasting, fine diamond finishing point and coarse diamond point. The retention of cast crown was measured with Instron University Testing Machine(Instron Engineering Co., U.S.A.) The results were as follows: 1. The Maximium retention was obtained by the group of Z.P.C. cementation and Coarse diamond point surface conditioning. 2. Z.P.C. shows maximum retention, and reduced in orders Tembond, Cavitec, No cement. 3. The value of retention of surface condition was highest in coarse diamond point, lowest in no tretment. 4. The similar results were obtained between fine diamond point and 50 microne sandblasting, coarse diamond point and 250 microne sandblasting. 5. The were no direct corelation between mechanical retetnion and cementation retention.
Cementation* ; Crowns ; Diamond

Recent development of dignostic tools such as video-endoscopy, chromoscopy, magnifying endoscopy, and endoscopic ultrasonography has made it possible to do the accurate staging of colorectal cancer. Dysplasia confined to mucosa or upper one-third of submucosa of rectal wall can be treated with mucosal resection or local resection for cure. The involvement of perirectal lymph node by cancers can be confirmed by endoscopic ultrasonography-guided fine needle aspiration cytology (EUS-FNA). Positron emission tomography is useful for the detection of recurrent and metastatic tumor after surgical resection. Colonoscopy is cost-effective for the screening of cancer, however, But the virtual colonoscopy with MR or CT can play the role of colonoscopy without risk. Stool DNA test is a promising tool. In addition to traditional diagnostic tools such as colonoscopy, CT and pathology, emerging knowledge from molecular biology of cancer gives information on predicts the prognosis of colorectal cancer patients.
Biopsy, Fine-Needle ; Colonography, Computed Tomographic ; Colonoscopy ; Colorectal Neoplasms* ; Diagnosis* ; DNA ; Endoscopy ; Endosonography ; Humans ; Lymph Nodes ; Mass Screening ; Molecular Biology ; Mucous Membrane ; Pathology ; Positron-Emission Tomography ; Prognosis

No abstract available.
Diagnostic Errors*

A case of familiar benign chronic pemphigus is reported. A 41 years old housewife has recurrent history of developing grouped vesicular eruptions with erythematous erosion on the intertrigenous area since 29 years of her age. The lesions were used to aggrevated in summer and improved in autumn. Familiar history revealed same disease of her grand mother, father, 44 year old elder sister and 39 year old younger sister. All of whom had similar clinical signs and symptoms. Routine physical and laboratoryfindings were within normal limits. The histopathological findings, from vesicular eruption of the lateral aspect of neck, showed multilocular suprabasal clefts with acantholsis, villi formation and hyperkeratosis. The lesions were-improved hy the local application of corticosteroidoid ointment only.
Adult ; Fathers ; Humans ; Mothers ; Neck ; Pemphigus, Benign Familial* ; Siblings

A case of hereditary anhidrotic ectodermal dysplasia associated with atopic dermatitis in 16 month old male is reported. He has been suffered from multiple symptoms of anhidrosis, hypotrichosis, anodontia and atopic dermatitis. The skin showed pale, shiny, thin and dry and hairless on whole body except in the scalp. Without sweat gland and flattening of epidermis on skin biopey is compatible with an hereditary anhidrotic ectodermal dysplasia.
Anodontia ; Dermatitis, Atopic ; Ectodermal Dysplasia* ; Epidermis ; Humans ; Hypohidrosis ; Hypotrichosis ; Infant ; Male ; Scalp ; Skin ; Sweat Glands

No abstract available.
Humans ; Peptic Ulcer*

The 16 out of 19 cases with combined oral administration oral of Descrespet and Tetracycline hydrochloride were considerably more effective in treatment of severe acne than Tetracycline hydrochloride alone or placebo in this study. 10 cases of atopic dermatitis and 6 severe acne with side effect for tetracycline hydrochlorid, such as aMominal discomfortness, also treated with Descresapt: 7 cases of atopic dermatitis and 4 acne cleared definitely faster than in patient not given Descresept Conclusively, it is cnosidered that the Descresept is effective in the tretment of severe acne and atopic dermatitis.
Acne Vulgaris ; Administration, Oral ; Dermatitis, Atopic ; Humans ; Tetracycline

No abstract available.
Dental Arch* ; Incisor*

We aimed to investigate the effect of in vitro allergen challenge on activation of eosinophils and expression of intercellular adhesion molecule-1(ICAM-1) in the epithelial and endothelial cells of the nasal mucosa of allergic rhinitics. MATERIALS AND METHODS: Inferior turbinate mucosal specimens which were obtained from 16 perennial allergic rhinitics and sensitized to D. farinae during conchotomy operations were used. Each mucosal specimen was divided into six pieces. The first two pieces were used as basic control group without culture, the second two pieces as culture-control group which was cultured with diluent only, and the last two pieces as antigen-challenge group cultured with D. farinae solution for 24 hours. Specimens were immunohistochemically stained using monoclonal antibody against eosinophil cationic protein(EG1 for all eosinophils and EG2 for activated forms) and ICAM-1. RESULTS: Average counts of EG1 cells and EG2+ cells within 1 mm of lamina propria of nasal mucosa were 14 and 11 respectively in the basic control group, 17 and 19 in culture control group, and 16 and 16 in the antigen-challenge group. ICAM-1 expression on vessels was observed more than half of t,he vessels in the nasal mucosa and there was no significant difference between groups, however, its expression on the epithelial cells was most prominent in the antigen-challenge group (2.1 in basic control group, 3.3 in culture control group, and 6.2 in antigen-challenge group). CONCLUSION: Most of the eosinophils infiltrating into the nasal mucosae out of vessels in allergic rhinitics are activated forms. Significant up-regulation of epithelial ICAM-1 expression by antigen-challenge suggests that ICAM-1 contributes to the transmigration of eosinophils from the subepithelial tissue into the epithelial cell layer and then finally into the nasal secretion.
Endothelial Cells ; Eosinophils* ; Epithelial Cells ; Intercellular Adhesion Molecule-1* ; Mucous Membrane ; Nasal Mucosa* ; Turbinates ; Up-Regulation

Colorecal cancer undergo relatively long preneoplastic processes before being invasive. Fecal occult blood test (FOBT) has been a useful tool to detect the advanced colorectal cancers with cost-effectiveness. However, the patient’s compliance to FOBT was poor because of low sensitivity and annual sampling. The sigmoidoscopy and colonoscopy have the ten-year preventive effect for the advanced cancer. Recently the DNA stool test for detection of mutations has showed excellent sensitivity and specificity. It has several adventages such as collection of samples and automated analysis. Virtual colonoscopy, especially CT colonograpy, can be a viable option for the colorecal cancer screening. In November 2001, the Korean Society of Coloproctology (KSCP) and the Natinal Cancer Center (NCC) developed the guidelines on screening and surveillance for early detection of colorectal cancers in Korea. Average-risk men and women should start colonoscopic examination with a 10-year interval at the age of 50. Individuals with increased risk such as those with a family or personal history of colorectal cancer or colorectal adenomas, or family history of familial adenomatous polyposis, hereditary non-polyposis colorectal cancer should consult their surveillance to the specialty-physicians. The ideal screening tools may change by age.
Adenoma ; Adenomatous Polyposis Coli ; Colonography, Computed Tomographic ; Colonoscopy ; Colorectal Neoplasms* ; Compliance ; DNA ; Early Detection of Cancer ; Female ; Humans ; Korea ; Male ; Mass Screening* ; Occult Blood ; Sensitivity and Specificity ; Sigmoidoscopy