No abstract available.

No abstract available.
Sterilization, Tubal*

An en bloc bilateral osteotomy of the orbital roofs and frontal sinus for large or deeply situated anterior skull base tumors offers less brain retraction and a wide exposure. The authors describe en bloc bilateral osteotomy of the orbital roofs and frontal sinus, with skull base reconstruction using inner table of the patient's own frontal bone flap. The approach in this report offers the advantage of wide exposure, one-site operation and short operation time.
Brain ; Frontal Bone ; Frontal Sinus ; Orbit ; Osteotomy ; Skull Base* ; Skull*

OBJECTIVE: The purpose of this study was to review our experience with subdural empyema. Clinical presentation, methods of diagnosis, results of microbiological tests, types of therapy, and outcome of patients are presented and compared with previous reports. METHODS: The study consists of 10 patients with subdural empyema treated from January 1988 to December 1997. Clinical records and radiologic studies were reviewed retrospectively. The patient population consisted of 8 men and 2 women, whose ages ranged from 12 to 65 years(mean 49.1 years). Diagnosis of subdural empyema was confirmed with contrastenhanced CT scanning or Gadoliniumenhanced MR imaging. Seven patients received surgical treatments and three patients were treated with a multiple antibiotics only. RESULTS: The subdural empyema have been found to occur most commonly after paranasal sinusitis and postoperative infection in four cases respectively, otitis media and mastoiditis in one case respectively. The organism were found to be staphylococci in three cases, streptococci in two cases, anaerobic streptococci in one case, sterile in one case, and unknown in three cases. Relative frequency of signs and symptoms revealed fever in eight cases, headache in seven cases, vomiting in five cases, hemiparesis in three cases, and epilepsy in two cases. The outcome was revealed good in eight cases, poor in two cases. CONCLUSION: Although subdural empyema is considered a rare condition, it constitutes between 13 and 23 per cent of all intracranial infectin. It usually presents as a fulminant clinical picture and rapid neurological deterioration. In this sense, it constitutes a true neurosurgical emergency. Diagnosis of subdural empyema is best made by either CT with contrast or by MRI. Both of these tests are also helpful in establishing the presence or absence of sinusitis. Subsequently, surgery along with antibiotics help to lower mortality rate. Antibiotics therapy should be selected according to final culture results and continued for 4 to 6 weeks. The general consensus is in favour of early drainage to reduce the mortality and clinical deterioration. In our study, the overall mortality rate was 0%, and 20% of patients had neurological deficiencies at the time of discharge from the hospital. It is very important for clinician to detect this condition early to keep low mortality and morbidity.
Anti-Bacterial Agents ; Consensus ; Diagnosis ; Drainage ; Emergencies ; Empyema, Subdural* ; Epilepsy ; Female ; Fever ; Headache ; Humans ; Magnetic Resonance Imaging ; Male ; Mastoid ; Mastoiditis ; Mortality ; Otitis Media ; Paresis ; Retrospective Studies ; Sinusitis ; Tomography, X-Ray Computed ; Vomiting

Displaced fracture of the ankle are probably the most common skeletal injury managed today by open reduction and internal fixation. But, it is recommended that metallic implant might be removed to restore normal biomechanical forces on hone and to reduce discomfort directly under the skin. in order to reduce the resources needed for the removal of metallic fixation devices, absorbable impiants of biodegradable synthetic polymers were deveioped. However reports of clinical application of such implants have so far been very few. This prospective study represents the good resuits in 15 displaced non-comminuted closed malleolar fractures of the ankle treated using hiodegradahle internal fixation in department of orthopedic surgery of Kwang Myung Sung Ae general hospitai from June I 995 to December 1996. The results were as follows 1. All cases were united and the average time for union was 7.6 weeks. 2. As a results of comparison with normal side, a restriction of 10 degrees or more of dorsiflexion of the ankle joint was present in 4 cases, a restriction of 20 degrees or more of plantar tlexion was present in 2 cases, a restriction of supination was present in 3 cases and a restriction of plantar flexion was present in 4 cases. 3. According to Phillips functional scoring scale, 4 cases were excellent, 7 cases good, 4 cases fair and no cases were poor. 4. There were no complications in all cases.
Ankle ; Ankle Joint ; Orthopedics ; Polymers ; Prospective Studies ; Skin ; Supination

Purpose: Research comparing and evaluating the properties of various dental materials is an important topic in the field of dentistry. This study aims to evaluate the fluoride release and microhardness properties of various fluoride-containing restorative materials used in dental treatments. Materials and Methods: Thirty specimens of four restorative materials were pre-pared (5 mm × 2 mm, cylindrical): alkasite-based material (Cention N, CN), Self-cure glass Ionomer (Riva self cure, RS), Resin-modified glass ionomer cement (Fuji LC II, FL) and composite resin (Filtek Z350XT, FZ). Fluoride release measurements were conducted on 25 specimens at intervals of 1, 2, 6, 13, 20, and 27 days with a fluoride electrode connected to the pH/ISE Meter (Orion Star A214, Thermo Scientific, USA) and cumulative fluoride release was calculated. Vickers microhardness measurements were performed on five specimens from each material with microhardness tester (DM2D, AFFRI, Italy). Results: As a result of measuring the amount of fluoride release over 27 days, the amount of fluoride release in CN showed a gradual increase, while the amount of fluoride release in RS, FL, and FZ gradually decreased. The cumulative fluoride release amount for 28 days was significantly higher in CN and FL than in RS (P < 0.05). FZ and RS demonstrated significantly higher microhardness compared to CN and FL (P < 0.05). FZ and RS showed similar microhardness, and FL showed the lowest microhardness. Conclusion Cention N (CN) exhibited superior fluoride release compared to Glass Ionomer Cement (RS), making it a promising option for preventing secondary caries. However, it displayed a lower microhardness than the composite resin (FZ), indicating potential limitations in terms of mechanical strength. Therefore, if an anti-caries action is required, Cention N may be considered first; however, it appears to be difficult to use in posterior permanent teeth.

Purpose: Research comparing and evaluating the properties of various dental materials is an important topic in the field of dentistry. This study aims to evaluate the fluoride release and microhardness properties of various fluoride-containing restorative materials used in dental treatments. Materials and Methods: Thirty specimens of four restorative materials were pre-pared (5 mm × 2 mm, cylindrical): alkasite-based material (Cention N, CN), Self-cure glass Ionomer (Riva self cure, RS), Resin-modified glass ionomer cement (Fuji LC II, FL) and composite resin (Filtek Z350XT, FZ). Fluoride release measurements were conducted on 25 specimens at intervals of 1, 2, 6, 13, 20, and 27 days with a fluoride electrode connected to the pH/ISE Meter (Orion Star A214, Thermo Scientific, USA) and cumulative fluoride release was calculated. Vickers microhardness measurements were performed on five specimens from each material with microhardness tester (DM2D, AFFRI, Italy). Results: As a result of measuring the amount of fluoride release over 27 days, the amount of fluoride release in CN showed a gradual increase, while the amount of fluoride release in RS, FL, and FZ gradually decreased. The cumulative fluoride release amount for 28 days was significantly higher in CN and FL than in RS (P < 0.05). FZ and RS demonstrated significantly higher microhardness compared to CN and FL (P < 0.05). FZ and RS showed similar microhardness, and FL showed the lowest microhardness. Conclusion Cention N (CN) exhibited superior fluoride release compared to Glass Ionomer Cement (RS), making it a promising option for preventing secondary caries. However, it displayed a lower microhardness than the composite resin (FZ), indicating potential limitations in terms of mechanical strength. Therefore, if an anti-caries action is required, Cention N may be considered first; however, it appears to be difficult to use in posterior permanent teeth.

Purpose: Research comparing and evaluating the properties of various dental materials is an important topic in the field of dentistry. This study aims to evaluate the fluoride release and microhardness properties of various fluoride-containing restorative materials used in dental treatments. Materials and Methods: Thirty specimens of four restorative materials were pre-pared (5 mm × 2 mm, cylindrical): alkasite-based material (Cention N, CN), Self-cure glass Ionomer (Riva self cure, RS), Resin-modified glass ionomer cement (Fuji LC II, FL) and composite resin (Filtek Z350XT, FZ). Fluoride release measurements were conducted on 25 specimens at intervals of 1, 2, 6, 13, 20, and 27 days with a fluoride electrode connected to the pH/ISE Meter (Orion Star A214, Thermo Scientific, USA) and cumulative fluoride release was calculated. Vickers microhardness measurements were performed on five specimens from each material with microhardness tester (DM2D, AFFRI, Italy). Results: As a result of measuring the amount of fluoride release over 27 days, the amount of fluoride release in CN showed a gradual increase, while the amount of fluoride release in RS, FL, and FZ gradually decreased. The cumulative fluoride release amount for 28 days was significantly higher in CN and FL than in RS (P < 0.05). FZ and RS demonstrated significantly higher microhardness compared to CN and FL (P < 0.05). FZ and RS showed similar microhardness, and FL showed the lowest microhardness. Conclusion Cention N (CN) exhibited superior fluoride release compared to Glass Ionomer Cement (RS), making it a promising option for preventing secondary caries. However, it displayed a lower microhardness than the composite resin (FZ), indicating potential limitations in terms of mechanical strength. Therefore, if an anti-caries action is required, Cention N may be considered first; however, it appears to be difficult to use in posterior permanent teeth.

Purpose: Research comparing and evaluating the properties of various dental materials is an important topic in the field of dentistry. This study aims to evaluate the fluoride release and microhardness properties of various fluoride-containing restorative materials used in dental treatments. Materials and Methods: Thirty specimens of four restorative materials were pre-pared (5 mm × 2 mm, cylindrical): alkasite-based material (Cention N, CN), Self-cure glass Ionomer (Riva self cure, RS), Resin-modified glass ionomer cement (Fuji LC II, FL) and composite resin (Filtek Z350XT, FZ). Fluoride release measurements were conducted on 25 specimens at intervals of 1, 2, 6, 13, 20, and 27 days with a fluoride electrode connected to the pH/ISE Meter (Orion Star A214, Thermo Scientific, USA) and cumulative fluoride release was calculated. Vickers microhardness measurements were performed on five specimens from each material with microhardness tester (DM2D, AFFRI, Italy). Results: As a result of measuring the amount of fluoride release over 27 days, the amount of fluoride release in CN showed a gradual increase, while the amount of fluoride release in RS, FL, and FZ gradually decreased. The cumulative fluoride release amount for 28 days was significantly higher in CN and FL than in RS (P < 0.05). FZ and RS demonstrated significantly higher microhardness compared to CN and FL (P < 0.05). FZ and RS showed similar microhardness, and FL showed the lowest microhardness. Conclusion Cention N (CN) exhibited superior fluoride release compared to Glass Ionomer Cement (RS), making it a promising option for preventing secondary caries. However, it displayed a lower microhardness than the composite resin (FZ), indicating potential limitations in terms of mechanical strength. Therefore, if an anti-caries action is required, Cention N may be considered first; however, it appears to be difficult to use in posterior permanent teeth.

A technique for Thallium-201 imaging after two separate injections of the tracer, which took less than I hour, was performed to evaluate if this technique could be used clinically as a noninvasive screening test of angina pectoris. 29 patients who complained of chest pain were included in this study: 18 patients were proven to have coronary artery disease by coronary angiography and 11 patients had normal coronary arteries. With the patient supine at rest, 1.0 mCi of Thallium was injected intravenously and imaging was performed in the anterior and 50degrees left anterior oblique projections for a preset time according to Okada's protocol. Immediately after acquisition of the rest images, without moving the camera head, an infusion of dipyridamole was done at the rate of 0.14 mg/Kg/min for 4 minutes. Two minutes after stopping the infusion, 1.0 mCi of Thallium was injected intravenously and 50degrees left anterior oblique and anterior projection images were acquired. Images of the same projection were realigned using computer image registration approach (PDP-11/34 computer of DEC company). The rest image was then subtracted from the realigned dipyridamole image to produce an image representing perfusion during dipyridamole induced hyperemia (subtraction image). The results were as follows; 1) All of the subtraction images were of adequate quality for interpretation. 2) 16 cases in 18 patients of angina pectoris and 1 case in 11 normal control showed perfusion defects, so the over all sensitivity and specificity of the subtraction versus rest Thallium image technique for diagnosis of angina pectoris were 89% and 91%, respectively. 3) All patients (8 cases) whose left ventriculography revealed abnormality of regional wall motion showed perfusion defects in corresponding segments. But qualitative analysis of Thallium image could not predict if the patient whose Thallium image revealed perfusion defect has abnormality of regional wall motion. 4) segmental analysis was performed to know the association between the site of coronary artery stenosis and the perfusion defects in Thallium scan, which revealed the sensitivities for detecting stenosis of LCX, LAD & RCA were 50-60% in range and the range of specificities were 89-92%. 5) Adverse effects of dipyridamole were headache (2 cases) and chest pain (4 cases) but aminophylline was not needed in any case. In conclusion, split dose Thallium dipyridamole scan can be used as a noninvasive screening test of angina pectoris reducing the total duration of imaging to less than one hour. Futher applications of this technique may include the assessment of myocardial perfusion before and immediately after coronary angioplasty and coronary artery bypass graft and the evaluation of the impact of pharmacotheraphy on regional myocardial perfusion.
Aminophylline ; Angina Pectoris* ; Angioplasty ; Chest Pain ; Constriction, Pathologic ; Coronary Angiography ; Coronary Artery Bypass ; Coronary Artery Disease ; Coronary Stenosis ; Coronary Vessels ; Diagnosis* ; Dipyridamole* ; Head ; Headache ; Humans ; Hyperemia ; Mass Screening ; Perfusion ; Sensitivity and Specificity ; Thallium ; Transplants