• Journal of the korean academy of Pediatric Dentistry
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• v.24 no.3
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• pp.710-717
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• 1997

Autotransplantation is the transplantation of embeded, impacted, or unerupted tooth, into extraction socket or surgically prepared socket in the same individual. Clinically, successful autotransplantation must show radiolucent space(periodontal ligament space) between transplanted tooth and supporting bone, lamina dura, no root resorption, no ankylosis, no inflammatory change, and physiologic tooth mobility. It is important that procedure is atraumatic, and the instruments should not contact the root surface during procedure. We performed autotransplantation of impacted mandibular canine that transversely located beneath the apices of the mandibular incisors with uncompletely developed apex. In radiographs and clinical evaluation, this transplant showed successful clinical finding except irregularity of mesial root surface after 14 months. It is conclued that transplantation of canine with $\frac{1}{2}{\sim}\frac{3}{4}$ root development provides a good chance of pulp survival, limited risk of root resorption and ensures sufficient final length, and is thus recommended.

• Journal of Chest Surgery
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• v.33 no.6
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• pp.525-527
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• 2000

Subarachnoid-pleural fistula after routine thoracotomy is a rare complication but a very serious problem. Twenty one cases have been reported in the literature. We report a care of subarchnoid-pleural fistula that dveloped after the esecation of posterior mediastinal neurogenic tumor. The patient presented with large amount of clear pleural fluid with mild headache and dizziness. Surgical intervention following a trial of conservative therapy was undertaken because we strongly suspected subarachnoid-pleural fistula. A dural tear was found at the level of resected intercostal nerve root. The dura was closed by way of direct suture and fibrin glue. In this case, the recognition of subarachnoid-pleural fistula formation is difficult because the patient had not presented any neurologic deficit.

• Journal of Korean Neurosurgical Society
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• v.60 no.3
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• pp.367-370
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• 2017

Dural injury during spinal surgery can subsequently give rise to a remote cerebellar hemorrhage (RCH). Although the incidence of such injury is low, the resulting hemorrhage can be life threatening. The mechanism underlying the formation of the hemorrhage is not known, but it is mostly thought to develop after venous infarction. Cerebellar mutism (CM) is a frequent complication of posterior fossa operations in children, but it is rarely seen in adults. The development of CM after an RCH has not been described. We describe the case of a 65-year old female who lost cerebrospinal fluid after inadvertent opening of the dura during surgery. Computerized tomography performed when the patient became unable to speak revealed a bilateral cerebellar hemorrhage.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.10 no.1
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• pp.29-33
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• 1980

An ameloblastoma produces more extensive resorption of the teeth on which it encroaches than do most of the other lesions. In this study, intraoral and extraoral radiographs of 78 cases of ameloblastoma were observed and the root resorption associated with ameloblastoma was classified into four types of resorption. With these, the following conclusions were obtained. 1. The root resorption was observed in 72 cases of ameloblastoma. (92.3%) 2. In the aspect of resorptive changes of 424 roots observed, 342 roots showed smooth resorption. (80.6%) 3. The 424 roots associated with ameloblastoma revealed the following radiographic features. a) Root apex resorption in contact with the lesion appeared in 189 roots. (44.5%) b) The resorption of roots projected into the lesion appeared in 147 roots. (34.6%) c) Slight resorption of root surface in contact with the lesion was observed in 56 roots. (13.2%) d) Loss of lamina dura and periodontal space without root resorption were observed in 32 roots. (7.7%)

• Proceedings of the KSME Conference
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• 2000.11a
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• pp.370-375
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• 2000

To study the effect of a disc creep on the cauda-equina occlusion, 3D-viscoelastic FE model including dura mater was developed. The model was analyzed according to various loading conditions and studied the contact between cauda-equina and nearby elements with time. With this contact the volume of the cauda-equina was changed. The contact and change of the volume were happened most highly in extension with time. By this result, it was concluded that the extension is the most fatal motion to cauda-equina in lumbar spine in all time region.

• Journal of the Korean institute of surface engineering
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• v.27 no.6
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• pp.347-358
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• 1994

Estimation of durability for corrugated steel pipe(CSP) has been evaluated by using several analytical methods. This study, using a plain hot-dip galvanized CSP as the base line, addresses additional coatings such as polymers sand bituminous coatings that may be used to achieve a desired design life of at least 50years. The behavior of both the soil side and the effluent side of the pipe have been studied. It is estimated that CSP generally provides outstanding dura-bility with regard to soil side effects, and that virtually any required service life can be attained by selecting appropri-ate coatingss and/or thickness of steel substrate. This study is limited to storm drainage systemss carrying naturally oc-curring surface water only. The recommendation in this report do not apply to sanitary or industrial waste sewers or other conduits used to carry corrosive effluents.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.14 no.1
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• pp.169-172
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• 1984

The author observed a cystic lesion which had new radiographic entities in the 6 years old male patient and obtained the following features. 1. The main clinical feature is the swelling. 2. The lesion is situated on the buccal surface of a erupting mandibular first molar. 3. The affected molar is tilted, so that the apices are adjacent to the lingual plate of the mandible. 4. The affected molar is of normal morphology, caries-free and vital. 5. The radiographic feature is the cystic radiolucency which is extended over the buccal surface of the roots of the affected molar and slightly inferior to the root apices. 6. The dental papilla of the affected molar shows the lamina dura of relatively normal density and definitition. 7. The buccal surface shows the laminated new bone formation. 8. The inferior concave border of the lesion is delineated by a thick and calcified layer of cortical bone. 9. The lesion causes displacement of the developing second molar of which anterior cortex is partially destroyed.

• Annals of Clinical Neurophysiology
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• v.18 no.1
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• pp.11-13
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• 2016

Idiopathic hypertrophic cranial pachymeningitis (ICHP) is diffuse inflammatory process of the dura mater. ICHP can produce similar presentation with Tolosa-Hunt syndrome (THS) if it involves cavernous sinus. A-29-year old male with persistent headache and no definite neurologic dysfunction was noted. Two weeks later, he complained of ophthalmoplegia, and his symptoms were thought to be manifestations of THS. Brain magnetic resonance images revealed diffuse thickened, enhanced pachymeninges in left tentorium. The patient was diagnosed with IHCP. We report a IHCP patient who showed very similar presentation as THS.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.7 no.1
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• pp.43-48
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• 1977

The authors had observed a rare case of osteopetrosis from 8 years old male who had complained nasal obstruction at, Department of Dental Radiology, Kyung Hee University. In the serial roentgenograms the following results were revealed. 1. This osteopetrosis was considered to be malignant rather than benign. 2. In the skull, the greatest degree of radiopacity was found in the base. The pituitary fossa appeared to be small and posterior clinoid process revealed clubbing and thickening. 3. In the frontal and nasal bones were slightly enlarged with marked radiopacity and paranasal sinuses were obscured. 4. The maxilla was markedly affected and bony trabeculae were seen to be coarse and thickened but mandibular posterior segment slightly. 5. There were long retardation of the tooth eruption and physiologic resorption of the deciduous teeth, and tooth root revealed stunted and dwarfed appearance in the both jaws. 6. In this case, the thickened alveolar lamina dura was indistinguishable.

• Investigative Magnetic Resonance Imaging
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• v.19 no.4
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• pp.252-255
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• 2015

Intracranial involvement in multiple myeloma patients takes up around 1%, and is usually known to be present in the parietal bone or skull base in cases of skull vault involvement, while it presents in the dura and parenchyma in cases of intracranial involvement. Primary pachymeningeal invasion is even rarer with extremely rapid progression and very poor prognosis. It is our intent to report a case in which we had to differentiate multiple myeloma with other metastatic tumors, lymphoma, and leukemia with intracranial involvement. Our patient showed an osteolytic lesion of the skull with dural involvement and subdural mass formations.