STATEMENT OF PROBLEM: Regardless of any restoration, most of case, we used in screw connection between abutment and implant. For this reason, implant screw loosening has been remained problem in restorative practices. PURPOSE: The purpose of this study was to compare surface of coated/plated screw with titanium and gold alloy screw and to evaluate physical property of coated/plated material after scratch test in FESEM investigation. MATERIAL AND METHODS: GoldTite, titanium screw provided by 3i (Implant Innovation, USA) and TorqTite, titanium screw by Steri-Oss (Nobel Biocare, USA) and gold screw, titanium screw by AVANA (Osstem Implant, korea) - were selected for this study. Each abutment screw surface was observed at 100 times, and then screw crest, root, and slope were done more detailed numerical value, at 1000 times with FESEM. A micro-diamond needle was also prepared for the scratch test. Each abutment screw was fixed, micro-diamond scratch the surface of head region was made at constant load and then was observed central region and periphery of fine trace through 1000 times with FESEM. RESULTS: The surface of GoldTite was smoother than that of other kinds of screw and had abundant ductility and malleability compared with titanium and gold screw. The scratch test also showed that teflon particles were exfoliated easily in screw coated with teflon. Titanium screw had a rough surface and low ductility. CONCLUSION: It was recommended that the clinical use of gold-plated screw would prevent a screw from loosening.
Alloys ; Head ; Needles ; Polytetrafluoroethylene ; Titanium

Nerve conduction studies help delineate the extent and distribution of the neural lesion. The nerve conduction was studied on upper (median, ulnar and radial nerves) and lower (personal, posterior tibial and sural nerves) extremities in 83 healthy subjects 23 to 66 years of age, and normal values were established (Table 1). The mean motor terminal latency (TL): median, 3.6 (±0.6) milliseconds; ulnar, 2.9 (±0.5) milliseconds; radial nerve, 2.3 (±0.4) milliseconds. Mean motor nerve conduction velocity (MNCV) along distal and proximal segments: median, 61.2 (±9.1) (W-E) and 57.8 (±13.2) (E-Ax) meters per second; ulnar, 63.7 (±9.1) (W-E) and 50.6 (±10.0) meters per second. Mean sensory nerve conduction velocity (SNCV): median, 34.7 (±6.7) (F-W), 63.7 (±7.1) (W-E) and 62.8 (±12.3) (E-Ax) meters per second; ulnar, 38.0 (±6.7) (F-W), 63.4 (±7.5) (W-E) and 57.0 (±10.1) (E-Ax) meters per second; radial, 45.3 (±6.8) (F-W) and 64.2 (±11.0) (W-E) meters per second; sural nerve, 43.4 (±6.1) meters per second. The amplitudes of action potential and H-reflex were also standardized. Mean H latency was 28.4 (±3.2) milliseconds. And, the fundamental principles, several factors altering the rate of nerve conduction and clinical application of nerve stimulation techniques were reviewed.
Action Potentials ; Adult* ; Extremities ; H-Reflex ; Healthy Volunteers ; Humans ; Neural Conduction* ; Radial Nerve ; Reference Values ; Sural Nerve

PURPOSE: To quantify the cardiac dose reduction during breathing adapted radiotherapy using Real-time Position Management (RPM) system in the treatment of left-sided breast cancer. MATERIALS AND METHODS: Twenty-two patients with left-sided breast cancer underwent CT scans during breathing maneuvers including free breathing (FB), deep inspiration breath-hold (DIBH), and end inspiration breath-hold (EIBH). The RPM system was used to monitor respiratory motion, and the in-house self respiration monitoring (SRM) system was used for visual feedback. For each scan, treatment plans were generated and dosimetric parameters from DIBH and EIBH plans were compared to those of FB plans. RESULTS: All patients completed CT scans with different breathing maneuvers. When compared with FB plans, DIBH plans demonstrated significant reductions in irradiated heart volume and the heart V25, with the relative reduction of 71% and 70%, respectively (p < 0.001). EIBH plans also resulted in significantly smaller irradiated heart volume and lower heart V25 than FB plans, with the relative reduction of 39% and 37%, respectively (p = 0.002). Despite of significant expansion of lung volume using inspiration breath-hold, there were no significant differences in left lung V25 among the three plans. CONCLUSION: In comparison with FB, both DIBH and EIBH plans demonstrated a significant reduction of radiation dose to the heart. In the training course, SRM system was useful and effective in terms of positional reproducibility and patient compliance.
Breast Neoplasms* ; Cardiac Volume ; Feedback, Sensory ; Heart ; Humans ; Lung ; Patient Compliance ; Radiotherapy* ; Respiration* ; Tomography, X-Ray Computed

Complications of tracheal intubation are well documented. However, iatrogenic aspiration of a broken metallic stylet following tracheal intubation has been infrequently reported. A 60-year-old woman, 10 days after shoulder arthroscopic surgery under endotracheal general anesthesia, was admitted to our hospital because of right chest pain. Chest radiographs showed a 8 cm length of metallic foreign body in the lower lobe of the right lung. Attempts at retrieval, including thoracoscopy, were unsuccessful. Open thoracostomy was performed. The removed foreign body was a part of metallic stylet. We report a case of iatrogenic aspiration of a broken metallic stylet.
Anesthesia, General ; Arthroscopy ; Chest Pain ; Female ; Foreign Bodies ; Humans ; Intubation ; Lung ; Middle Aged ; Radiography, Thoracic ; Shoulder ; Thoracoscopy ; Thoracostomy

PURPOSE: To determine feasibility of RapidArc in sequential or simultaneous integrated tumor boost in whole brain radiation therapy (WBRT) for poor prognostic patients with four or more brain metastases. MATERIALS AND METHODS: Nine patients with multiple (> or =4) brain metastases were analyzed. Three patients were classified as class II in recursive partitioning analysis and 6 were class III. The class III patients presented with hemiparesis, cognitive deficit, or apraxia. The ratio of tumor to whole brain volume was 0.8-7.9%. Six patients received 2-dimensional bilateral WBRT, (30 Gy/10-12 fractions), followed by sequential RapidArc tumor boost (15-30 Gy/4-10 fractions). Three patients received RapidArc WBRT with simultaneous integrated boost to tumors (48-50 Gy) in 10-20 fractions. RESULTS: The median biologically effective dose to metastatic tumors was 68.1 Gy10 and 67.2 Gy10 and the median brain volume irradiated more than 100 Gy3 were 1.9% (24 cm3) and 0.8% (13 cm3) for each group. With less than 3 minutes of treatment time, RapidArc was easily applied to the patients with poor performance status. The follow-up period was 0.3-16.5 months. Tumor responses among the 6 patients who underwent follow-up magnetic resonance imaging were partial and stable in 3 and 3, respectively. Overall survival at 6 and 12 months were 66.7% and 41.7%, respectively. The local progression-free survival at 6 and 12 months were 100% and 62.5%, respectively. CONCLUSION: RapidArc as a component in whole brain radiation therapy for poor prognostic, multiple brain metastases is an effective and safe modality with easy application.
Apraxias ; Brain ; Disease-Free Survival ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Neoplasm Metastasis ; Paresis ; Radiotherapy, Intensity-Modulated

No abstract available.
Facies*

Fibromatosis of the breast is a rare tumor. We describe here a case of mammary fibromatosis in a 37-year-old woman. The mass from the right breast was 3 cm at the greatest dimension. The lesion was poorly circumscribed, firm and white-gray on the cut surface. Histologically, the lesion infiltrated into the lobules of the breast, and the tumor was composed of relatively uniform fibroblasts and collagen. Neither mitotic activity nor cellular atypia was seen. On the immunohistochemistry, the cells were positive for vimentin and they were focally positive for smooth muscle actin. Staining results for estrogen receptor and progesterone receptor were negative.
Actins ; Adult ; Breast Neoplasms ; Breast* ; Collagen ; Estrogens ; Female ; Fibroblasts ; Fibroma* ; Humans ; Immunohistochemistry ; Muscle, Smooth ; Receptors, Progesterone ; Vimentin

PURPOSE: The current work is aimed at illustrating the feasibility and assessing the efficacy of laparoscopic surgery in the treatment of gastric and duodenal diseases. METHODS: 27 patients who suffered from various gastroduodenal diseases were operated on between Feb. 1996 and July 1997. Operating times, procedures associated with pathologic diagnosis, bleeding during operation, mean starting times of oral intake, postoperative hospital stays, and complications were examined using the operating records and the medical charts. RESULTS: The procedures and the associated pathologic conditions were a feeding jejunostomy (gastric cancer peritonei), 12 wedge resections (1 duodenal diverticulum, 1 Brunner's gland hyperplasia, 2 gastric polyps, 6 gastrointestinal stromal tumors, and 2 early gastric carcinomas, 3 gastrojejunostomies (unresectable gastric cancers), 10 subtotal gastrectomies (9 complicated peptic ulcers and early gastric cancer), and a radical (D1 alpha) subtotal gastrectomy. The average operating times were 85 minutes in the feeding jejunostomy, 132 minutes in the wedge resections, 95 minutes in the gastro jejunostomies, 208 minutes in the subtotal gastrectomies (Billroth-I: 160 min; Billroth-II: 262 min.), and 300 minutes in the radical operation. The mean intraoperative bleeding was 80-800 cc. The mean start ing time of solid oral intake and postopeative hospital stay were shorter than in open surgery (oral intake: 1-5 day; hospital stay: 6-9 days). There were six postoperative complications. One patient died due to a cerebral infarction during the operation. one wound infection, one stump leakage, one pulmonary edema, and two cases of postoperative bleeding occurred, but they were treated conventionally without reoperation. CONCLUSION: Minimally invasive surgery appears to be an invaluable tool for treating gastroduodenal diseases. Furthermore, it is a valid option in experienced hands and in selected cases of gastric cancer, allowing patients to benefit from a less cumbersome hospital stay and from more satisfaction.
Cerebral Infarction ; Diagnosis ; Diverticulum ; Duodenal Diseases* ; Gastrectomy ; Gastric Bypass ; Gastrointestinal Stromal Tumors ; Hand ; Hemorrhage ; Humans ; Hyperplasia ; Jejunostomy ; Laparoscopy* ; Length of Stay ; Peptic Ulcer ; Polyps ; Postoperative Complications ; Pulmonary Edema ; Reoperation ; Stomach Neoplasms ; Surgical Procedures, Minimally Invasive ; Wound Infection

PURPOSE: The current work is aimed at illustrating the feasibility and assessing the efficacy of laparoscopic surgery in the treatment of gastric and duodenal diseases. METHODS: 27 patients who suffered from various gastroduodenal diseases were operated on between Feb. 1996 and July 1997. Operating times, procedures associated with pathologic diagnosis, bleeding during operation, mean starting times of oral intake, postoperative hospital stays, and complications were examined using the operating records and the medical charts. RESULTS: The procedures and the associated pathologic conditions were a feeding jejunostomy (gastric cancer peritonei), 12 wedge resections (1 duodenal diverticulum, 1 Brunner's gland hyperplasia, 2 gastric polyps, 6 gastrointestinal stromal tumors, and 2 early gastric carcinomas, 3 gastrojejunostomies (unresectable gastric cancers), 10 subtotal gastrectomies (9 complicated peptic ulcers and early gastric cancer), and a radical (D1 alpha) subtotal gastrectomy. The average operating times were 85 minutes in the feeding jejunostomy, 132 minutes in the wedge resections, 95 minutes in the gastro jejunostomies, 208 minutes in the subtotal gastrectomies (Billroth-I: 160 min; Billroth-II: 262 min.), and 300 minutes in the radical operation. The mean intraoperative bleeding was 80-800 cc. The mean start ing time of solid oral intake and postopeative hospital stay were shorter than in open surgery (oral intake: 1-5 day; hospital stay: 6-9 days). There were six postoperative complications. One patient died due to a cerebral infarction during the operation. one wound infection, one stump leakage, one pulmonary edema, and two cases of postoperative bleeding occurred, but they were treated conventionally without reoperation. CONCLUSION: Minimally invasive surgery appears to be an invaluable tool for treating gastroduodenal diseases. Furthermore, it is a valid option in experienced hands and in selected cases of gastric cancer, allowing patients to benefit from a less cumbersome hospital stay and from more satisfaction.
Cerebral Infarction ; Diagnosis ; Diverticulum ; Duodenal Diseases* ; Gastrectomy ; Gastric Bypass ; Gastrointestinal Stromal Tumors ; Hand ; Hemorrhage ; Humans ; Hyperplasia ; Jejunostomy ; Laparoscopy* ; Length of Stay ; Peptic Ulcer ; Polyps ; Postoperative Complications ; Pulmonary Edema ; Reoperation ; Stomach Neoplasms ; Surgical Procedures, Minimally Invasive ; Wound Infection

No abstract available.
Carcinoma, Renal Cell* ; Melena*