• The korean journal of orthodontics
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• v.47 no.6
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• pp.384-393
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• 2017

Fusion of teeth is a developmental anomaly. It occurs at the stage of tooth formation, which determines the shape and size of the tooth crown, when one or more teeth fuse at the dentin level during the morphodifferentiation of the dental germs. Such teeth show macrodontia and may cause crowding, as well as esthetic and endodontic problems. In this article, we report a rare case of a maxillary central incisor fused to a supernumerary tooth showing labial and palatal talon cusps, which was orthodontically moved across the midpalatal suture. A 13-year-old Caucasian boy sought treatment for the unesthetic appearance of his maxillary central incisor and anterior crowding. He was rehabilitated successfully via a multidisciplinary approach involving orthodontic, nonsurgical endodontic, periodontal, and prosthodontic treatments. After a 26-month treatment period, the patient's macroesthetics and microesthetics were improved. The overall improvement of this macrodontic tooth and its surrounding tissues through multidisciplinary treatment was documented using cone-beam computed tomography.

• Journal of Oral Medicine and Pain
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• v.39 no.1
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• pp.29-33
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• 2014

Mucormycosis is a rare but fatal fungal infection with low survival rate in immune-compromised patients. It is caused by a fungus belonging to the Mucoraceae family of the Zygomycetes class. Mucormycosis is classified as rhino-orbital-cerebral, pulmonary, cutaneous, gastrointestinal, disseminated, and miscellaneous types according to its clinical manifestations. Early diagnosis and treatment along with correction of the underlying medical condition is important for favorable results. This case presentation describes mucormycosis involving the anterior maxillary region in a leukemic patient with prolonged neutropenia. The patient benefited from a timely biopsy and immediate treatment with amphotericin B, and was successfully managed with an interdisciplinary team approach consisting of dental and several medical specialists.

• International Journal of Industrial Entomology and Biomaterials
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• v.18 no.2
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• pp.77-82
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• 2009

The egg shell of the tropical tasar silkworm, Antheraea mylitta is formed from the substances secreted by the follicular epithelium during the late vitellogenic stage. TEM study reveals the inner travecular and outer lamellar layer of chorion. The travecular layer is composed of the innermost wax layer, inner and outer chorionic layer. The inner and outer chorionic layers are connected to each other by vertical pillers forming of cavities. The lamellar layer is perforated by the aeropyles. SEM study reveals the differentiation of an anterior surface of the egg shell into four zones-micropylar, edge, aeropyles crown and disc zone. In the mycosis infected eggs the aeropyles and egg-shell surface are fully packed with the hyphae of the fungus, Aspergillus sydowi blocking of plastron respiration and causing the death of developing embryo so that mycosis infected eggs become sterile.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.1 no.1
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• pp.37-48
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• 1995

The correlation between mobility abnormalities and positional findings(pelvic asymmetry) is essential for complete pelvic girdle evaluation. For mobility tests, there are four tests include : 1. Standing forward bending test. 2. Seated forward bending test. 3. Posterior anterior sacral pressures. 4. Kinetic test. To determine specific pelvic dysfunction, positional findings should bo assessed with bony landmarks. According to the assessment findings, the suggested order of treatment is as follows. 1. Pubic malalignment. 2. Sacroiliac dysfunction. 3. Iliosacral dysfunction. Many of the pelvic dysfunctions will respond to the simplified approach as shown in this paper but some dysfunctions will require more specific treatment.

• Journal of Korean Neurosurgical Society
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• v.30 no.4
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• pp.509-513
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• 2001

Sacral schwannoma is a rare lesion with a tendency to reach large proportions. The benign schwannoma rarely involves the vertebral bodies extensively. The authors report a case of giant intrasacral schwannoma in 30-year-old woman who had intermittent lower back pain during 3 years period. CT and MRI showed a destructive mass lesion within the upper part of sacrum with a large mass extending into the presacral space. The patient underwent combined surgery consisted of anterior transabdominal approach and posterior sacral laminectomy and total removal of tumor. The characteristics of the lesion were discussed with a review of literatures.

• Journal of Korean Neurosurgical Society
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• v.52 no.3
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• pp.257-260
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• 2012

Spinal extradural arachnoid cysts usually cause symptoms related to spinal cord or nerve root compression. Here, we report an atypical presentation of a spinal extradural arachnoid cyst combined with congenital hemivertebra which was presented as a retroperitoneal mass that exerted mass effects to the abdominal organs. On image studies, the communication between the cystic pedicle and the spinal arachnoid space was indistinct. Based on our experience and the literature of the pathogenesis, we planned anterior approach for removal of the arachnoid cyst in order to focus on mass removal rather than ligation of the fistulous channel. In our estimation this was feasible considering radiologic findings and also essential for the symptom relief. The cyst was totally removed with the clogged 'thecal sac-side' end of the cystic pedicle. The patient was free of abdominal discomfort by one month after the surgery.

• Journal of Chest Surgery
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• v.47 no.6
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• pp.545-547
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• 2014

A coronary artery fistula was surgically ligated in a 38-year-old woman via a left anterior mini-thoracotomy without the use of cardiopulmonary bypass. In selected cases, this surgical approach can provide an excellent surgical exposure for coronary artery fistula ligation. It also offers an excellent cosmetic result and shorter hospital stay.

• Journal of Korean Physical Therapy Science
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• v.2 no.1
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• pp.431-443
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• 1995

The correlation between mobility abnormalities and positional findings(pelvic asymmetry) is essential for complete pelvic girdle evaluation. For mobility tests, there are four tests include : 1. Standing forward bending test. 2. Seated forward bending test. 3. Posterior anterior sacral pressures. 4. Kinetic test. To determine specific pelvic dysfunction, positional findings should bo assessed with bony land-marks. According to the assessment findings, the suggested order of treatment is as follows. 1. Pubic malalignment 2. Sacroiliac dysfunction. 3. Iliosacral dysfunction. Many of the pelvic dysfunctions will respond to the simplified approach as shown in this paper but some dysfunctions will require more specific treatment.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.8
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• pp.21-29
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• 2013

The functional behaviors of human standing postural control were investigated when they were exposed to long-term horizontal vibration in the sagittal plane. For complexity of human postural control, a useful alternative method that has been based on a black-box approach was taken; that is, where the feedback mechanism was lumped into a single element. A motor-driven support platform was designed as a source of vibration. The AC Servo-controlled motors produced continuous anterior/posterior (AP) motion. The data were analyzed both in the time and frequency domain. The cross-correlation and coherency functions were estimated. Subjects behaved as a non-rigid pendulum with a mass and a spring throughout the whole period of the platform motion, as consistent with the plan chosen for this study.

• Journal of Korean Neurosurgical Society
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• v.45 no.3
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• pp.196-198
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• 2009

Hemifacial spasm (HFS) is almost always induced by vascular compression but in some cases the cause of HFS are tumors at cerebellopontine angle (CPA) or vascular malformations. We present a rare case of hemifacial spasm caused by epidermoid tumors and the possible pathogenesis of HFS is discussed. A 36-year-old female patient presented with a 27-month history of progressive involuntary facial twitching and had been treated with acupuncture and herb medication. On imaging study, a mass lesion was seen at right CPA. Microvascular decompression combined with mass removal was undertaken through retrosigmoid approach. The lesion was avascular mass and diagnosed with an epidermoid tumor pathologically. Eventually, we found a offending vessel (AICA : anterior inferior cerebellar artery) compressing facial nerve root exit zone (REZ). In case of HFS caused by tumor compression on the facial nerve REZ, surgeons should try to find an offending vessel under the mass. This case supports the vascular compression theory as a pathogenesis of HFS.