No abstract available.

No abstract available.
Adenoma, Pleomorphic ; Mouth Mucosa

No abstract available.

No abstract available.
Carcinoma, Verrucous ; Lip

Adult ; Connective Tissue ; Extremities ; Head ; Histiocytoma, Malignant Fibrous ; Humans ; Maxilla ; Neck ; Radiotherapy ; Sarcoma

As jaws of children differ from those of adults in the aspects of architectural and mechanical properties, site, form and treatment modality of pediatric fractured jaws are somewhat different from those of adults. This study takes stastics of 33 pediatric patients with mandibular fractures (55 fracture sites) who were admitted to the department of oral and maxillofacial surgery. Kyung-hee university from May 1986 to March 1995, aged up to 15years with primary or mixed dentition, by age, cause, site and treatment modality. The results are as follows. 1. The mandibular fracture has sexual predilection for male, 0 to 3 years group. 2. The main cause of mandibular fracture is falling from various position, followed by traffic accident. 3. The highest incidence of fracture site is symphysis and/or condyle area. 4. Circumferential wiring is widely used for pediatric mandibular fracture.
Accidents, Traffic ; Adult ; Child ; Dentition, Mixed ; Humans ; Incidence ; Jaw ; Male ; Mandibular Fractures* ; Surgery, Oral

Retinal implants have been developed as a promising way to restore partial vision for the blind. The observation and analysis of neural activities can offer valuable insights for successful prosthetic electrical stimulation. Retinal ganglion cell (RGC) activities have been investigated to provide knowledge on the requirements for electrical stimulation, such as threshold current and the effect of stimulation waveforms. To develop a detailed ‘stimulation strategy’ for faithful delivery of spatiotemporal visual information to the brain, it is essential to examine both the temporal and spatial characteristics of RGC responses, whereas previous studies were mainly focused on one or the other. In this study, we investigate whether the spatiotemporal visual information can be decoded from the RGC network activity evoked by patterned electrical stimulation. Along with a thorough characterization of spatial spreading of stimulation current and temporal information encoding, we demonstrated that multipixel spatiotemporal visual information can be accurately decoded from the population activities of RGCs stimulated by amplitude-modulated pulse trains. We also found that the details of stimulation, such as pulse amplitude range and pulse rate, were crucial for accurate decoding. Overall, the results suggest that useful visual function may be restored by amplitude modulation-based retinal stimulation.
Brain ; Electric Stimulation* ; Heart Rate ; Retinal Ganglion Cells ; Retinaldehyde*

Basal cell nevus syndrome is inherited as an autosomal dominant trait with variable expressivity. This syndrome comprises a number of abnormalities such as multiple nevoid basal cell carcinomas of the skin, skeletal abnormalities as bifid rib and fusion of vertebrae, central nervous system abnormalities as mental retardation, eye abnormalities, and multiple odontogenic kerato cysts. In 1960, Gorlin and Goltz first described the features of this disease as constituting a true syndrome; since then, it has been realized that it is much more complex and encompassing than initially thought. This patient has many symtoms of basal cell nevus syndrome. we has known multiple jaw cysts through panorama and facial computed tomography. He has hyperchromatism on basal cell through skin biopsy. In ophthalmologic consult, he has blindness on right. On his past medical history, amputation was done on his toes for polyductalism. - So we report with literature reviews
Amputation ; Basal Cell Nevus Syndrome* ; Biopsy ; Blindness ; Carcinoma, Basal Cell ; Central Nervous System ; Eye Abnormalities ; Humans ; Intellectual Disability ; Jaw Cysts ; Odontogenic Cysts ; Ribs ; Skin ; Spine ; Toes

The osteochondroma, also known as osteocartilaginous exostosis, is one of the most common benign tumors of the axial skeleton. These tumours rarely affect the facial skeleton and a true osteochondroma of the mandibular condyle is a very uncommon entity. The tumors are usually slow growing, and symptoms develop over a long time. The most common presentation of the condylar osteochondroma consists of a changing occlusion, the development of facial asymmetry, and a posterior open bite on the affected side. In this case, we treated an osteochondroma of Lt. mandibular condyle through excision of the lesion via the temporal approach to the temporomandibular joint.
Facial Asymmetry ; Mandibular Condyle* ; Open Bite ; Osteochondroma ; Skeleton ; Temporomandibular Joint

This is a case report and review of literature of a rare mixed odontogenic tumor, ameloblastic fibro-odontoma in the posterior area of the mandible. The ameloblastic fibro-odontoma which was developed by hyperplasia of dental epithelium and mesenchymal tissue. This tumor was classified from ameloblastic odontoma by Hooker, in 1967. At first and characterized by mixed appearance of odontoma and ameloblastic fibro-odontoma, But, on the point of pathologic feature, there are many controversial opinions among scholars up to the present. The patients of this case report was refereed to our department via the pedodontic department for the treatment of hard mass on the premolar area of the left mandible. And then, on the clinical and radiographic examination at first visit, we had tentative diagnosis that the lesion was benign mixed odontogenic tumor of defined mass margin that was amelblastic fibro-odontoma. The tumor mass was removed by surgical enucleation and curettage and extracted left mandibular second premolar which was impacted on the lesion. And the removed tumor mass was confirmed to ameloblastic fibro-odontoma on the post-operative biopsy. The patients has well done follow-up check postoperatively and shown no sign of recurrence up to the present.
Ameloblasts* ; Bicuspid ; Biopsy ; Curettage ; Diagnosis ; Epithelium ; Follow-Up Studies ; Humans ; Hyperplasia ; Mandible* ; Odontogenic Tumors ; Odontoma ; Recurrence