The purpose of this study was to evaluate the effects of thermocycling on the shear bond strength of Co-Cr alloy to denture base resin. PMMA denture base resin such as heat-cured Vertex-RS , self-cured Vertex-SC and 4-META denture base resin such as heat-cured Meta-Dent , self-cured Meta-Fast was bonded to Co-Cr alloy. Samples were divided into 3 groups : no thermocycling group as control, thermocycling between 5degrees C and 55degrees C with 15 second dwell time as group 1, thermocycling with 1 minute dwell time as group2. The shear bond strength was measured and the interface between metal and resin was observed by SEM. The results were as follows. 1. The shear bond strength decreased significantly according to thermocycling and dwell time(P<0.001). 2. The bond strength of Co-Cr alloy and 4-META denture base resin was significantly higher than that of Co-Cr alloy and PMMA denture base resin(P<0.001). 3. IN SEM, there was no gap in control group, but there was much and large gap in group 1, 2. The longer dwell times, the lower bond strength. PMMA denture base resin had more gap than 4-META denture dwell times, the lower bond strength. PMMA denture base resin had more gap than 4-META denture base resin in the interface. These results revealed that thermocycling decreased the bond strength between Co-Cr alloy and denture base resin and dwell time of thermocycling changed the effect of thermocycling. The results suggested that oral temperature change affect the bond strength of prosthesis.
Alloys* ; Denture Bases* ; Dentures* ; Polymethyl Methacrylate ; Prostheses and Implants

No abstract available.
Child* ; Humans ; Scrub Typhus*

No abstract available.

No abstract available.
Catheterization, Central Venous* ; Central Venous Catheters* ; Jugular Veins*

PURPOSE: The objective of this study was to survey potential candidates for bariatric/metabolic surgery for procedure preferences. METHODS: Questions asked were divided into 5 categories: (1) demographic and anthropometric data, comorbidities, and favored surgery; (2) awareness of safety, effectiveness, and complications of each type of surgery; (3) discordances in opinion between self-selected and medically recommended procedures; and (4, 5) reasons for/against particular surgery. RESULTS: From 1 October to 15 November 2018, 104 respondents adequately responded and were included in the analysis. The number (%) of female respondents was 79 (76.0%). The number (%) of respondents by decade was 17 (16.3%) in their 20s, 65 (62.5%) in their 30s, 19 (18.3%) in their 40s, and 3 (2.9%) in their 60s, respectively. Mean body mass index was 37.1 ± 6.3 kg/m2. Comorbidities were type 2 diabetes in 34 (32.7%) and hypertension in 35 (33.7%). The most favored procedure was sleeve gastrectomy (SG) in 78 (75.0%), adjustable gastric band (AGB) surgery in 12 (11.5%), Roux-en-Y gastric bypass (RYGB) in 6 (5.8%), and gastric plication (GP) in 8 (7.7%). Major reasons for choosing procedures were; “adjustable” for AGB, “stomach sparing” for GP, “excellent weight loss” for SG, and “comorbidity resolution” in RYGB. CONCLUSION Candidates for bariatric/metabolic surgery favored SG followed by AGB, GP, and RYGB, and their choices were compatible with current evidence-based clinical practice.

Purpose: This study investigated the complications and patterns of implants that confronted with the extruded natural teeth. Materials and Methods: Among patients who received implant treatment between 2006 and 2018 at Chosun University Dental Hos-pital, only implants that had a maintenance period of at least 5 years and that both implants and confronting natural teeth could bemeasured and compared on a radiograph were selected. They were divided into two groups. Group 1, experimental group consisted of Implants confronting the extruded natural posterior teeth (n = 167: maxilla (Group 1max ) = 92, mandible (Group 1man ) = 75) and Group 2, control group consisted of Implants confronting the normal natural posterior teeth (n = 656: maxilla (Group 2max ) = 272, mandible (Group 2man ) = 384). Results: The incidence of complications between Group 1 and Group 2 was statistically significant. In particular, there was a statistically significant difference between the frequency of marginal bone loss and the amount of marginalbone loss. Conclusion The extruded natural tooth may cause more frequent complications including bone resorption in the oppos-ing implant.

BACKGROUND: Generally, for patients with cancer, chronic disease, burn injury or pediatric patients to whom oral medication is difficult or whose vessels are fragile, it is difficult to inject analgesics parenterally. To know the effect of subcutaneous infusion which would be directly used by patients themselves or their care givers, we compared subcutaneous patient-controlled analgesia (SQ PCA) with intravenous patient-controlled analgesia (IV PCA) morphine for acute postoperative pain. METHODS: We undertook a study to prospective, randomized, controlled patients (n = 30) undergoing elective total hysterectomy to compare SQ PCA with IV PCA morphine for postoperative pain control. We prepared a 5 mg/ml solution of morphine for the SQ PCA group (n = 15) and a 1 mg/ml solution of morphine for the IV PCA group (n = 15). The regimen of morphine was a basal rate 20 microgram/kg/h, 1 mg bolus, 10 min lockout interval, 1 hour limit of 8 mg. We evaluated the VAS score at rest and at coughing after postoperative 6, 12, 18, 24, 30, 36, 42 and 48 hours, 6 hourly doses of morphine, total requirement of infused morphine for 48 hours and delivery to demand ratio. Side effects and satisfactory score were checked too. RESULTS: The Visual analogue scale (VAS) pain score at rest and with coughing, the 6 hourly doses of morphine, the total requirement of infused morphine for 48 hours, the delivery to demand ratio, side effects and the satisfactory score were not significantly different in the two groups (P<0.05). CONCLUSION: Thus SQ PCA morphine represents a clinically acceptable alternative to IV PCA in the treatment of postoperative pain control.
Analgesia, Patient-Controlled* ; Analgesics ; Burns ; Caregivers ; Chronic Disease ; Cough ; Humans ; Hysterectomy ; Infusions, Subcutaneous ; Morphine* ; Pain, Postoperative ; Passive Cutaneous Anaphylaxis ; Prospective Studies

Strumal carcinoma of the ovary is rare tumor of germ cell origin characterized by intimate mixture of thyroid tissue and carcinoid. We report a strumal carcinoid tumor associated with ipsilateral follicular cyst and contralateral mature cystic teratoma of the ovary in a 47-year-old woman. Histologically it was composed largely of trabeculae partly of insular carcinoid and focally of individual thyroid follicles. Many cells in the carcinoid areas and even some follicular areas contained abundant argyrophile granules, and they also, in the corresponding areas, demonstrated thyroglobulin. Electron microscopic findings revealed abundant neurosecretory granules and colloid material in the same cell. We agree that this tumor is derived from hybrid showing thyroid and neuroendocrine differenciation.
Female ; Humans ; Cysts

PURPOSE: To investigate the CT findings of acute right colonic diverticulitis, and to determine the differencebetween these and published reports deseribing left colonic, especially sigmoid, diverticulitis. MATERIAL AND METHODS: In 13 patients with acute right lower quadrant pain who underwent ultrasonography a normal appendix wasdemonstrated and acute right colonic diverticulitis was suspected. CT was performed within 24 hours and thefindings were analysed by two radiologists. For further confirmation of diverticulitis, follow-up barium enemaswere performed in ten patients. RESULTS: Inflamed diverticula were visible in all cases, and were solitary. Ninecases occured in the ascending colon and four in the cecum; in particular, eleven occurred around the ileocecalvalve. In three cases, the inflamed diverticulum was less than 1cm in diameter;in five cases, 1-2cm;in three,2-3cm, and in two, 3-4cm. These were able to be classified into two major forms. In three cases it was nodularwith hyperattenuation and some inhomogeneity, and ten shows the target form with thick walls and a central cavity.In five of these target lesions, the wall pattern was partially or completely inhomogenous, or multilayered. Thematerials filling the central cavity were gas in five cases, fecalith in two, and fluid in three. Abnormalpericoloic fat infiltrations were seen in twelve cases(92%), segmental colonic wall thickening in eleven(85%),other not-inflamed diverticula in five(38%), mesenteric lymph node enlargement in three(23%), free pericecal fluidcollection in three(23%), and perirenal fascial thickenings in two(15%). The complications such as remote abscesscavity, colonic obstruction, fistula or perforation were not found. On barium colon study, diverticulitis was inall cases confirmed by the presence of barium in the deformed diverticulum. CONCLUSION: Among CT findings foracute right colonic diverticulitis, the most important and pathognomonic is inflamed diverticula; the forms ofthese vary, and include gangrenous diverticulitis. The CT findings of early right colonic diverticulitis inKoreans might not, however, reveal the complications which sigmoid diverticulitis frequently involves; in patientswith right lower quadrant pain imaging studies are performed promptly, and for the mesentery, the anatomical basebetween right and left colons is different.
Appendix ; Barium ; Cecum ; Colon* ; Colon, Ascending ; Colon, Sigmoid ; Diverticulitis ; Diverticulitis, Colonic* ; Diverticulum ; Fecal Impaction ; Fistula ; Follow-Up Studies ; Humans ; Lymph Nodes ; Mesentery ; Ultrasonography

Extraskeletal chondromas are relatively uncommon benign cartilaginous tumors of the soft tissue and well known to pose a considerable diagnostic problem because of histological variations including the immature appearance of their tumor cells. Recently, we have experienced a case of extraskeletal chondroma mimicking benign chondroblastoma. The patient was a 47-year-old woman who complained of a painful subcutaneous swelling on the radial aspect of 4th proximal interphalangeal (PIP) joint in the left hand for 6 months. Radiologic examination of the 4th finger revealed a 1cm-sized soft tissue mass. Histologically, the tumor was characterized by a lobulated mass which was composed of dense proliferation of chondroblast-like cells admixed with a few multinucleated giant cells of osteoclastic type. However, there were focal areas of typical chondroma which showed lace-like intense calcification around the differentiated chondrocytes.
Chondroblastoma ; Chondrocytes ; Chondroma* ; Female ; Fingers ; Giant Cells ; Hand ; Humans ; Joints ; Middle Aged ; Osteoclasts