STATEMENT of THE PROBLEM: The record base in fabricating procedures of the complete denture, as a temporary form for reproducing denture base, is used to record upper and lower jaw relation and to align artificial teeth and try-in it in the mouth. The accuracy of jaw relation record is affected by the accuracy, stiffness and stability of the record base. So, the accuracy of record base is the most important requirements of jaw relation records. PURPOSE of STUDY: The purpose of this study was to evaluate the gap that occurred over the palatal area of a maxillary record base fabricated with autopolymerizing resin and light-curingresin. METHODS AND MATERIAL: The maxillary record bases were fabricated out of autopolymerizing resin that is used the most frequently in clinics and light-curing resin that attracts special attentionfor its several merits. The light-curing resin was made by two kinds of polymerization methods, which are one step curing method and multiple step curing method. All record bases were cut in certain positions of the master cast 1 hour and 1 day later after fabrication and the accuracy of the master cast was measured and analyzed with a microscope. RESULTS: A pattern of gap formation between the record base and the maxillary cast was observed in all specimens. According to kinds of resins, autopolymerizing resin was significantly more accurate than light-curing resin. There was no statistical difference according to time lapse, and in all three groups, the maximum discrepancy occurred at the posterior border in the midpalatal region. CONCLUSLON: The autopolymerizing resin is better than light-curing resin, and multiple step curing method is more accurate than one step curing method when using light-curing resin.
Denture Bases ; Denture, Complete* ; Jaw ; Jaw Relation Record ; Mouth ; Polymerization* ; Polymers* ; Tooth, Artificial

The usual form of neurofibromatosis is characterized by cafe-au-Iait skin pigmentation and pedunculated fibrous skin tumors but in the severe form, malformations and tumors of the central nervous system may be associated with von Recklinghausen's disease. Schwannoma of the spinal sensory roots, of the vestibular part of 8th cranial nerve, and of the sensory root of the 5th cranial nerve are particularly common. Outside the central nervous system, other neuroectodermal tumors may develop including renal, pancreas, and suprarenal tumors. Recently, neurofibromatosis is subdivided into type 1 and 2, according to the site of involvement. Type 1 is classic von Recklinghausen's disease, and type 2 represents bilateral acoustic neurinomas. The authors experienced 2 cases neurofibromatosis type 1 and 1 case of neurofibromatosis type 2 in which neurofibromas involve both cerebello-pontine angles, multiple levels of spinal cord and cauda equina.
Cauda Equina ; Central Nervous System ; Cranial Nerves ; Neurilemmoma ; Neuroectodermal Tumors ; Neurofibroma ; Neurofibromatoses* ; Neurofibromatosis 1 ; Neurofibromatosis 2 ; Pancreas ; Skin ; Skin Pigmentation ; Spinal Cord

OBJECTIVE: This study was conducted to analyze and compare the classifications of a prehospital triage system and an in-hospital triage system. METHODS: The records of patients transferred from the ‘119’ emergency service for 5 months (from January 1 to May 31, 2016) were collected and records of first aid activities were assessed. We examined cases classified as four (urgent, semi-urgent, potentially urgent, and non-urgent) of five stages, excluding death. In the hospital, data were collected from medical records and classifications made using the five Korean Triage and Acuity Scale (KTAS) stages (1, resuscitation; 2, emergency; 3, urgent; 4, less urgent; and 5, non-urgent) were analyzed. RESULTS: The number of patients enrolled in the study was 3,457. Of them, 2,301 were discharged after treatment and 1,156 were hospitalized. According to the prehospital triage classification, 726 of the 3,457 cases were urgent, 593 were semiurgent, 1,944 were potentially urgent, and 194 were non-urgent. The results of the in-hospital triage were as follows: 114 KTAS 1 (3.3%), 491 KTAS 2 (14.2%), 1,345 KTAS 3 (38.9%), 1,227 KTAS 4 (35.5%), and 280 KTAS 5 (8.1%). The odds ratio trend for hospitalization showed a larger decrease according to in-hospital staging (95% CI, 0.32–0.39) than according to prehospital staging (95% CI, 0.50–0.60). The odds ratio trend for intensive care unit (ICU) admission also showed a larger decrease according to in-hospital staging (95% CI, 0.16–0.22) than according to prehospital staging (95% CI, 0.37–0.48). CONCLUSION: We found little correspondence in classifications made according to the KTAS and prehospital triage systems. However, the tendencies toward decreases in the hospitalization and ICU admission rates were similar.
Classification ; Emergencies ; First Aid ; Hospitalization ; Humans ; Intensive Care Units ; Medical Records ; Odds Ratio ; Patient Acuity ; Resuscitation ; Triage*

Thirty consecutive patient seen in a pediatric out patient and emergency department, in whom the diagnosis of intussusception was considered, had an ultrasound examination of the abdomen before the barium enema. The peak age was 5~12 month (range 4~34 month). Intussusception was detected by ultrasonography in all 25 cases proved by barium enema (sensitivity 100%). Normal findings on ultrasonography correlated with a negative barium enema results in 5 of 5 cases (negative predictive value=100%). No intussusception was missed by ultrasonography. To determine which patient would most benefit from ultrasonography, we divided patients into either a high risk group (100% intussusception) or a low risk group (37.5% intussusception) on the basis of clinical symptoms. We conclude that ultrasonography can be used as a rapid sensitive screening procedure in the diagnosis or exclusion of childhood intussusception. Probability of surgical reduction was associated with size of of total thickness and external rim thickness.
Abdomen ; Barium ; Child* ; Diagnosis* ; Emergency Service, Hospital ; Enema ; Humans ; Infant* ; Intussusception* ; Mass Screening ; Ultrasonography*

Endoscopic variceal ligation (EVL) is effective for the management of bleeding esophageal varices, and its use is widespread now. EVL necessitates the use of overtubes. Two primary techniques have been used for overtube placement; one is with endoscope, and the other is with bougie dilator. Overtube placement with endoseope is not without risk. There are reportd of esophageal or pharyngeal laceration or perforation. Overtube placement with bougie dilator circumvents this risk, but it is rather cumbersome to use. The authors devised a safe and easy method for overtube placement, and applied it to a number of patients to test its safety and convenience. First, overtube-dilator assembly was prepared as follows. A Rigiflex achalasia dilator (balloon 30mm OD, 10cm length; Microvasive Co) was lubricated and inserted into the overtube. A tenth of the balloon tip was protruded out of the overtube, then the balloon was insufflated with air at 10-15 psi. Second, standard endoscopy was performed, followed by placement of guide wire in the stomach. Overtube-dilator assembly was lubricated and introduced over the wire as a rail. Once the overtube was properly positioned, the balloon was deflated, and the balloon and wire were removed as a whole, which completed overtube placement. For 65 patients with esophageal variceal bleeding, 82 procedures of EVL were performed using the new technique. Overtube-dilator assembly was easy to prepare and handle. This technique added little time to the procedure and minimizes patients discomfort. No patient suffered major complications such as bleeding, laceration or perforation. This novel method for overtube placement was safe and convenient for use in EVL. It can also be applied to other procedures using overtube such as endoscopic foreign body removal.
Endoscopes ; Endoscopy ; Esophageal Achalasia ; Esophageal and Gastric Varices ; Foreign Bodies ; Hemorrhage ; Humans ; Lacerations ; Ligation* ; Stomach

Much has been learned of the pathogenesis and pathophysiology of the toxic shock syndrome (TSS) since the initial description in 1978 by Dr. James K, Todd. The clinical illness is defined by the criteria listed in the case definition formulated for epidemiologic studies. With the advent of widespread recognition of TSS, there have been numerous published reports describing the clinical and laboratory findings, primarily in menstruating females. And there have been also reported about six cases in Korea. Moreover, TSS is uncommon in the prepubertal age group and no case report in infant in Korea. We experienced two cases of TSS in infants aged 11/2 yrs and 9 months associated with respiratory infection-pneumonia, pyopneumothorax and localized skin abscess that were confused with Kawasaki disease (KD). The diagnosis was made on the basis of clinical features and laboratory findings, and the cases met the Centers of Disease Control case definition of TSS. And thus we report these cases and review related literatures.
Abscess ; Diagnosis ; Female ; Humans ; Infant* ; Korea ; Mucocutaneous Lymph Node Syndrome ; Shock, Septic* ; Skin

Background: The coronavirus disease (COVID-19) can manifest in a range of symptoms, including both asymptomatic systems which appear nearly non-existent to the patient, all the way to the development of acute respiratory distress syndrome (ARDS). Specifically, COVID-19–associated pneumonia develops into ARDS due to the rapid progression of hypoxia, and although arterial blood gas analysis can assist in halting this deterioration, the current environment provided by the COVID-19 pandemic, which has led to an overall lack of medical resources or equipment, has made it difficult to administer such tests in a widespread manner. As a result, this study was conducted in order to determine whether the levels of oxygen saturation (SpO2) and the fraction of inhaled oxygen (FiO2) (SF ratio) can also serve as predictors of ARDS and the patient’s risk of mortality. Methods: This was a retrospective cohort study conducted from February 2020 to Mary 2020, with the study’s subjects consisting of COVID-19 pneumonia patients who had reached a state of deterioration that required the use of oxygen therapy. Of the 100 COVID-19 pneumonia cases, we compared 59 pneumonia patients who required oxygen therapy, divided into ARDS and non-ARDS pneumonia patients who required oxygen, and then investigated the different factors which affected their mortality. Results: At the time of admission, the ratios of SpO2, FiO2, and SF for the ARDS group differed significantly from those of the non-ARDS pneumonia support group who required oxygen (p<0.001). With respect to the predicting of the occurrence of ARDS, the SF ratio on admission and the SF ratio at exacerbation had an area under the curve which measured to be around 85.7% and 88.8% (p<0.001). Multivariate Cox regression analysis identified that the SF ratio at exacerbation (hazard ratio [HR], 0.916; 95% confidence interval [CI], 0.846–0.991; p=0.029) and National Early Warning Score (NEWS) (HR, 1.277; 95% CI, 1.010–1.615; p=0.041) were significant predictors of mortality. Conclusion The SF ratio on admission and the SF ratio at exacerbation were strong predictors of the occurrence of ARDS, and the SF ratio at exacerbation and NEWS held a significant effect on mortality.

PURPOSE: The universal vaccination against hepatitis B during early infancy is the only effective way to control hepatitis B infection in highly endemic areas in Korea. The purpose of this study was to assess the effectiveness of simultaneous hepatitis B vaccination with DPT and oral polio at 2, 4, 6 months of age in babies of HBs antigen negative mothers. METHODS: One hundred and eighty-one infants who were admitted to the Neonatal Intensive Care Unit (NICU), Chonnam University Hospital from August, 1994 to December, 1995 were enrolled in this study. Infants received Hepavax-B 0.5ml (10 microgram) at contralateral thigh intramuscularly, simultaneously with DPT vaccination. Antibody was assessed by MEIA (microparticle enzyme immunoassay) at seven to nine months of age. RESULTS: The seroconversion rate of Hepatitis B after vaccination was 98.3%. There were no significant differences in positive rate of antibody according to gestational age, birth weight and sex. Seroconversion rate to hepatitis B in twins was lower than in singlets. Twenty-two infants among 23 infants, who were able to assess antibody titer, showed effective antibody titer, above 100mIU/ml. CONCLUSION: The results suggest that the simultaneous administration of hepatitis B vaccine with DPT/TOPV is very effective and simplifies schedule. Moreover, this schedule will improve the compliance of vaccination.
Appointments and Schedules ; Birth Weight ; Compliance ; Gestational Age ; Hepatitis B Vaccines* ; Hepatitis B* ; Hepatitis* ; Humans ; Infant ; Infant, Newborn ; Intensive Care, Neonatal ; Jeollanam-do ; Korea ; Mothers ; Poliomyelitis* ; Thigh ; Twins ; Vaccination

Due to improvements in medical care, the socioeconomic level and public health, life expectancy has dramatically increased. Thus, advances in the development of life-support systems and the control of infection have resulted in many surgical and anesthetic procedures being performed on extremely elderly patients. In contrast to younger patients, elderly patients may manifest more than one pathologic process associated with progressive degenerative changes in various organs of the aged, especially in the heart, brain, and kidney. Since both progressive degenerative change occurring in the elderly population and the cumulative incidence of disease in that population result in death intraoperatively or during the immediate postoperative period, the anesthesiologist must be particularly alert to the possibility of anesthetic risks in the elderly. The elderly patient is more likely to have hypertension, congestive heart failure, cardiac dysrhythmias, chronic pulmonary disease, and diabetes. Preoperative evaluation and treatment of those conditions must be extensively reviewed prior to the induction of anesthesia. To evaluate geriatric anesthetic experiences, 539 cases of patients aged over 60 years of 4,266 anesthetic cases admitted to P.M.C. from January to December, 1986 were analyzed according to age, sex, physical status, anesthetic technique an6 agents, surgical department, preoperative chest X-ray findings, preoperative E.C.G findings, and postoperative complications. The results are as follows. 1) Of 4,266 anesthetic patients 539(12.6%) were over 60 3ears of age and 322(59.7%) were males and 217(40.3%) females. 2) In the classification of physical status, the most common evidence was class 2 in 303 cases. Emergency surgery comprised 27.1%. 3) The anesthesia technique employed was usually general anesthesia and this suggested that balanced anesthesia used with narcotics offers several advantages to geriatric patients. 4) In the surgical department, 310 cases(57.5%) were for general surgery, 75 cases(13,9%), orthopedic surgery; 57 cases(10.6%), urology; and 49 cases(9.1%), neurosurgery, respectively. Cancer was present in 198 cases(36.7%), 5) Preoperative chest X-ray findings: The most common finding was pulmonary tuberculosis in 44 cases(8.2%). Pneumonia, pulmonary emphysema, and so forth were also observed. 6) Preoperative E.C.G findings: The most common findings was myocardial ischemia in 48 cases(8.9%). Also myocardial infarction observed in 8 cases(1.5%) 7) Postoperative complications were as follows: The most common incidence was wourid infection in 29 cases(5.4%) followed by pneumonia. There were a number of miscellaneous complications. but postoperatively, they did not present any significant problems. 8) The overall mortality rate was 3.5%(19 cases). The difference in the mortality rate related to age was not statistically significant(p>0.1), but the mortality rate related to physical status was statistically significant(p<0.001). 9) Optimizing a patient's preoperative condition by the anesthesiologist, consultants, and other physicians was assumed to reduce perioperative morbidity and mortality.
Aged ; Anesthesia* ; Anesthesia, General ; Arrhythmias, Cardiac ; Balanced Anesthesia ; Brain ; Classification ; Consultants ; Emergencies ; Female ; Heart ; Heart Failure ; Humans ; Hypertension ; Incidence ; Kidney ; Life Expectancy ; Lung Diseases ; Male ; Mortality ; Myocardial Infarction ; Myocardial Ischemia ; Narcotics ; Neurosurgery ; Orthopedics ; Pneumonia ; Postoperative Complications ; Postoperative Period ; Public Health ; Pulmonary Emphysema ; Thorax ; Tuberculosis, Pulmonary ; Urology

PURPOSE: This study was undertaken to evaluate the clinical features and complication such as esophageal stricture in children with corrosive esophagitis. METHODS: We retrospectively reviewed medical records of 31 children who accidentally ingested corrosive materials and visited to emergency room of Chonnam National University Hospital from Jan. 1992 to Dec. 1999. Twenty-one children were examined by upper gastrointestinal(UGI) endoscopy to evaluate location and severity of caustic injury. RESULTS: 1) Among 31 patients, there were 20 males and 11 females and the ratio of male to female was 2:1. Average age at diagnosis was 2.3 years (12months to 9.8 years). Twenty-seven(87.1%) patients were accidentally ingested vinegar. 2) Initial presenting symptoms were dysphagia(54.8%), vomiting(48.3%), chemical burn on lips and skin(45.2%), excessive salivation(45.2%), coughing and respiratory grunting(32.3%) and aspiration pneumonia(9.8%). 3) UGI endoscopic examination showed caustic injury in 17 children : grade I in 8, grade II in 7 and grade III in 2. The region of caustic injury was proximal esophagus in 5, distal esophagus in 3, entire esophagus in 9 and stomach in 6. 4) Corrosive esophageal strictures developed in 6 children(19.4%) and gastric outlet stricture in 1(3.2%). All of them showed grade II or III caustic injury on endoscopic examination. CONCLUSION: The development of esophageal stricture was related to the severity of the caustic injury. Early UGI endoscopic examination in caustic ingestion seems to be useful for prediction of development of caustic stricture.
Acetic Acid ; Burns, Chemical ; Child* ; Constriction, Pathologic ; Cough ; Diagnosis ; Eating ; Emergency Service, Hospital ; Endoscopy ; Esophageal Stenosis ; Esophagitis* ; Esophagus ; Female ; Humans ; Jeollanam-do ; Lip ; Male ; Medical Records ; Retrospective Studies ; Stomach