ABSTRACT
PURPOSE: The aims of this study were to suggest a method of fabrication of the record base using a light-polymerized resin by applying the two-phase fabrication method for the improvement of the fit of the record base and to compare the degree of fit according to the separation site. MATERIAL AND METHODS: In the edentulous cast of maxilla, four test groups were considered. In the first, second, third, and fourth test groups (n = 12 in each group) the separation was done at 0, 5, 10, and 15 mm, respectively below the alveolar crest along the palatal plane. For the control group, the record base was made without separating the two sections. The light-body silicone material was injected into the fitting surface of the record base. It was then placed onto the cast and finger pressure was applied to stabilize it in a seated position followed by immediate placement onto the universal test device. Finally, the mass of the impression material was measured after it was removed. ANOVA was performed using the SAS program. For the post-hoc test, the Wilcoxon Rank-Sum test and the Tukey-Kramer HSD test were performed (alpha = 0.05). RESULTS: The control group and Group 3, 4 showed significant differences. The Group 3 and 4 showed significantly smaller inside gaps than the control group which was not made with the two-phase fabrication method. CONCLUSION: The two-stage polymerized technique can improve the fit of the denture base particularly when the separation was made at 10 to 15 mm from the alveolar crest.
Subject(s)
Collodion , Denture Bases , Fingers , Maxilla , Phenothiazines , Polymers , SiliconesABSTRACT
Seizures are a common presenting manifestation in patients in a nonketotic hyperglycemic(NKH) hyperosmolar state and the MR findings are typically hyperintense on T2 weighted (T2-W) and fluid attenuated inversion recovery (FLAIR) images. We recently experienced a case of the patient with partial seizure and nonketotic hyperglycemia who showed T2-W and FLAIR hypointensities with T1 weighted (T1-W) contrast enhancement.
Subject(s)
Humans , Hyperglycemia , SeizuresABSTRACT
OBJECTIVE: Personal Digital Assistants (PDAs) have the potential to improve clinical trial data collection; however, most current PDA-based clinical data collection systems typically collect and store data in the offline mode, and then transfer the data to an operational database. The purpose of this study was to explore the usefulness of a wireless clinical data collection system for an irritable bowel syndrome trial compared with the traditional paper based data collection. METHODS: We have developed a PDA-based data capture system for clinical trials, and tested it in a double-blind trial. Sixty four patients with irritable bowel syndrome were randomly selected and divided into a control group that used the standard paper report forms (CRF) and an intervention group that used the electronic report forms (e-CRF), daily for five weeks. There were 630 data sets consisting of six questions each, and thus 3,570 data points total were collected. RESULTS: The response rate of the control group was significantly higher than that of the intervention group. However, the completeness of the response in the intervention group was higher and the number of input errors per person for the PDA group was lower than in the paper group. CONCLUSION: A PDA based electronic diary improved the response rate and decreased input errors in an IBS trial. We conclude that mobile devices can be very useful, especially when the proposed design and connectivity aspects have been taken into account.
Subject(s)
Humans , Cell Phone , Computers, Handheld , Data Collection , Electronics , Electrons , Irritable Bowel SyndromeABSTRACT
Intracranial dermoid cysts are rare benign lesions and account for approximately 0.3% of all brain tumors. Rupture of a dermoid cyst with spillage of its contents into a subarachnoid space or ventricles is a potentially serious complication that can lead to meningitis, seizures, cerebral vasospasm and hydrocephalus. Here, we present a case of intracranial dermoid cyst rupture with cerebral infarction in the right midbrain and thalamus.
Subject(s)
Brain Neoplasms , Cerebral Infarction , Dermoid Cyst , Hydrocephalus , Meningitis , Mesencephalon , Rupture , Seizures , Subarachnoid Space , Thalamus , Vasospasm, IntracranialABSTRACT
BACKGROUND: Transient global amnesia (TGA) is one of the most striking syndromes in clinical neurology. In recent years, with the development of new types of imaging methods, particularly the clinical application of PET may have helped the medical personnel to understand the nature of this remarkable syndrome. The purpose of this study is to evaluate the common lesion of TGA by 18FDG-PET through Statistical Parametric Mapping (SPM) analysis and compare them with the results of the neuropsychological tests. METHODS: We studied prospectively 10 patients diagnosed clinically as TGA. They received brain MRI and/or CT and PET of the brain with 18FDG as the tracer. The results of the brain PET imaging of patients were analyzed with SPM and were compared with those of 15 normal controls. They also received SNSB and the Korean version of the Rey-Kim memory test. RESULTS: No obvious abnormality was found in the visual analysis of MRI or CT scans of the 10 patients with TGA. However SPM analysis of the brain PET imaging displayed low metabolic areas in the left primary motor and sensory cortex, bilateral anterior cingulate gyrus and right posterior thalamus. SNSB revealed multiple cognitive dysfunctions including visuospatial functions, visual memory, verbal memory, calculation, attention and frontal executive functions. In 5 patients, memory quotients were within the low average range. CONCLUSIONS: SPM analysis of PET imaging displayed multiple low metabolic areas and these lesions were roughly correlated with the results of neuropsychological tests which showed defects of visuospatial functioning and frontal executive functioning.
Subject(s)
Humans , Amnesia, Transient Global , Brain , Executive Function , Fluorodeoxyglucose F18 , Gyrus Cinguli , Magnetic Resonance Imaging , Memory , Neuroimaging , Neurology , Neuropsychological Tests , Positron-Emission Tomography , Prospective Studies , Strikes, Employee , Thalamus , Tomography, X-Ray ComputedABSTRACT
Differential diagnosis of benign giant tumors includes a circumscribed fibrocystic disease, giant fibroadenoma, juvenile fibroadenoma, lipoma, cystosarcoma phylloides, and hamartoma. Current general surgery textbooks describe excision through an inframammary incision and state that reconstructive procedures with flap rotation and prosthesis are inappropriate because the breast remnant generally returns to a normal configuration and contour following removal of a benign breast tumor. Although we agree with this recommendation for smaller fibroadenomas, the distortion and asymmetric stretching that occur with the larger tumors call for a breast reconstructive technique to achieve symmetry. We report 3 cases of giant benign tumors which were treated by excision and reconstruction using mastopexy technique. It's highly recommended that patients with benign giant tumors of breast should be treated by plastic surgeons with reconstructive techniques.
Subject(s)
Humans , Breast Neoplasms , Breast , Diagnosis, Differential , Fibroadenoma , Hamartoma , Lipoma , Phyllodes Tumor , Prostheses and ImplantsABSTRACT
In this paper, a new superimposition scheme using a computer vision system was proposed with pairs of skull and ante-mortem photographs, which were already identified through other tests and DNA fingerprints at the Korea National Institute of Scientific Investigation. In this computer vision system, an unidentified skull was caught by video-camcoder with the MPEG and the other ante-mortem photograph was scanned by scanner. These two images were processed and superimposed using pixel processing. This recognition of individual identifications by anatomical references can be performed on the two superimposed images for many big cases like as Guam KAL accident in 1997.