• Korean Journal of Head & Neck Oncology
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• v.31 no.1
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• pp.47-49
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• 2015

An osteoma of the external auditory canal(EAC) is an uncommon benign tumor. If a canal obstruction occurs, ear fullness or conductive hearing loss can arise. But, the association of an osteoma with a cholesteatoma is extremely rare. Therefore, we report a case of a 35-year-old female patient with osteoma of temporal bone that was complicated with EAC cholesteatoma.

• Journal of Oral Medicine and Pain
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• v.30 no.1
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• pp.57-67
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• 2005

The aim of this study was to evaluate bone scan(SUR) and SPECT(hot spot) in patients with TMJ osteoarthritis. 99mTc-MDP bone scan and SPECT were done in 27 patients, total 54 temporomandibular joints were examined with clinical examination, plain radiography. 42 TMJs were osteoarthritis and 12 TMJs were normal case, clinically diagnosed. We compared osteoarthritis group and control group of bone scan(SUR) and SPECT(hot spot). thus we compared before and after treatment of bone scan(SUR) and bone SPECT(hot spot) according to history, contributing factor, symptom degree, treatment, treatment period. The obtained results were as follows. 1. Bone scan(SUR) and SPECT(hot spot) activity of osteoarthritis group were higher than control group(P<0.05, P<0.01). 2. Bone scan(SUR) and SPECT(hot spot) activity were decreased after treatment at TMJ with osteoarthritis(P<0.01). 3. Bone scan(SUR) and SPECT(hot spot) activity were decreased at treatment group with splint(P<0.01, P<0.05). 4. Bone scan(SUR) and SPECT(hot spot) activity were decreased at Chronic group(P<0.01, P<0.05). 5. Bone scan(SUR) and SPECT(hot spot) activity were decreased at low noise NAS(<6) group(P<0.01,P<0.05). 6. Bone scan(SUR) and SPECT(hot spot) activity were decreased at TMD patient with parafunctional habit and without trauma history, psychosocial factor. 7. Bone scan(SUR) and SPECT(hot spot) activity were higher at before treatment required more treatment period.

• Journal of Dental Rehabilitation and Applied Science
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• v.29 no.2
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• pp.203-207
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• 2013

Psoriatic arthritis is a chronic inflammatory form of arthritis that is associated with psoriasis. A 54-yr-old male with chronic psoriatic temporomandibular joint arthritis and myofascial pain was treated using methotrexate and a myofascial pain protocol. Jaw pain improved after 3 weeks, however, tenderness to palpation of muscles remained. Comprehensive evaluation and multidisciplinary clinical treatment is required for the treatment of patients with psoriatic temporomandibular joint arthritis.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.295-296
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• 2010

• Journal of Oral Medicine and Pain
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• v.33 no.4
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• pp.387-394
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• 2008

Purpose : The purpose of this study was to verify the usefulness and feasibility of ultrasonographic imaging for the detection of the disorders of the surrounding supporting structure such as articular capsule, retrodiscal tissue and related ligaments, osteoarthritic evidence and associated disc displacement at the temporomandibular joint(TMJ) Materials and Methods : 20 patients(40 joints) with periodic lock and crepitations were investigated prospectively using 12 MHz array transducer. Ultrasonographic Imagings were assessed for osteoarthritic surface changes of condyle, extent of disc displacement and disorders of surrounding structures. Ultrasonographic images were compared with clinical investigations, conventional radiography and Dental Computed Tomographic scans. Results : In clinical and conventional radiography, osteoarthritic changes were diagnosed in 8 joints. Ultrasonographically 7 of the 8 osteoarthritic changes were diagnosed correctly. Sensitivity, specificity, and accuracy of ultrasonography in the osteoarthritic detections were 87.5%, 62.5%, and 67.5% respectively. About the detection of disc displacement, disc displacement were diagnosed in 21 joints clinically. Ultrasonographically 19 of the 21 disc displacements were diagnosed correctly. Sensitivity, specificity, and accuracy of ultrasonography in the osteoarthritic detections were 95%, 90%, and 92.5% respectively. when the disorders of supportive structure were figured out, the disorders of supportive structure were diagnosed in 18 joints clinically. Ultrasonographically 1 of the 18 the disorders of supportive structure were diagnosed correctly. Sensitivity, specificity, and accuracy of ultrasonography in the osteoarthritic detections were 5.5%, 4.5%, and 55% respectively. Conclusion : Ultrasonography is an relatively reliable diagnostic tool for the detection of disc displacement and some of osteoarthritic changes. But it's not an insufficient imaging technique for the detection of the disorders of the surrounding structure.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.27 no.2
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• pp.183-187
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• 2005

The coronal approach has been used for over a century by neurosurgeons to access to the anterior cranium. Indications for the coronal approach expanded from use in the correction of congenital skeletal anomalies to applications in acute maxillofacial trauma and secondary deformity correction, oncologic surgery and reconstruction, and esthetic surgery. Complications were such as injury to frontal branch of the facial nerve, motor nerve paralysis, hematoma under flap, trismus, ptosis, epiphora, infection and anterior temporal depression. $Medpor^{(R)}$ is made up of dense polyethylene connected in porous structures. It is easily shapable without collapsing the pores due to it's hardness and tissue growth takes place at the porosities. Based on these advantages, $Medpor^{(R)}$ has been used in augmentation and restoration in craniofacial defect. A temporal depression after the coronal approach for treatment of Le Fort III fracture was successfully reconstruction with $Medpor^{(R)}$ and we report this case with review of literature.

• Journal of Oral Medicine and Pain
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• v.31 no.3
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• pp.237-243
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• 2006

The aims of this study was to investigate the clinical and radiographic features of temporomandibular dysfunction in the patients with RA to elucidate whether the RA patients would be a risk group for TMD. The 35 patients with temporomandibular joint dysfunction were included for this study, of which 15 had rheumatoid arthritis diagnosed by a rheumatologist, and other 20 was control group and they didn't have any history or clinical signs related to it. Clinical symptoms and signs of temporomandibular joint disorders, radiographic and MRI findings of temporomandibular joint were investigated. The results were compared between two groups. In RA group bilateral pain, morning stiffness, reduced opening range, and crepitations were more frequently reported than control group. Radiologic findings such as sclerosis and flattening of condylar head, marginal proliferation, and erosion of glenoid fossa were more frequently observed in RA group than control group. Disk destruction, cortical bone erosion, and intraarticular enhancement were more prominenet in RA group. From theses results, it can be concluded that many RA patients will develop TMD symptoms and the structural changes of TMJ is more extensive than the usual TMD cases.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.5.1-5
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• 1979

Fibrous dysplasia of the temporal bone is a extremely rare condition in otological field with a total of 11 cases in the English literature so far. Authors experienced a case in 18 year old boy with complete obliteration of the external auditory canal and long standing keratosis obturance. The purpose of this paper is to discuss principles and methods of canalplasty and meatoplasty with literature review and presentation of authors case.

• Journal of Oral Medicine and Pain
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• v.33 no.4
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• pp.383-386
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• 2008

Osteomyelitis is considered an inflammatory condition of bone that usually begins as an infection of the medullary cavity and quickly extends to periosteum of the area. Early acute osteomyelitis of the mandible is usually characterized by deep, intense pain, high intermittent fever, paresthesia or anesthesia of the lower lip and a clearly identifiable cause. If the disease is not controlled or inadequately treated after onset, acute osteomyelitis progresses to a chronic form. The diagnosis of mandibular osteomyelitis rests on processing for identification of microbiologic isolates and on imaging studies to determine the extent of disease. Mandibular osteomyelitis often is associated with involvement of the masticator space and can exhibit symtoms similar to temporomandibular disorder including orofacial pain and limited mouth opening. Advanced imaging modalities can be helpful in obtaining a proper diagnosis.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.4 no.1
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• pp.29-34
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• 2010

The fully implantable hearing devices (FIHDs) have been studied to compensate the defect of conventional hearing aids. Typically, a microphone for FIHDs was implanted under the skin of the temporal bone. So, implantable microphone characteristics can be affected by the eating food, chattering teeth and moving artifact. In this paper, we fabricated the physical model that was similar to characteristics of human temporal bone and skin, and we measured implanted microphone sensitivity for effect of bone conducted noise signal. For the measurement of microphone sensitivity, we applied 1 kHz pure sounds that were transmitted to implanted microphone and sine wave vibrations of varied frequency were simultaneously transmitted through the artificial bone. As a result, sensitivity of implanted microphone can be modified by bone conducted signal and this phenomenon was confirmed at varied frequency band.