• The korean journal of orthodontics
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• v.43 no.4
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• pp.178-185
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• 2013

Objective: To standardize the facial soft-tissue characteristics of South Korean adults according to gender by measuring the soft-tissue thickness of young men and women with normal facial profiles by using three-dimensional (3D) reconstructed models. Methods: Computed tomographic images of 22 men aged 20 - 27 years and 18 women aged 20 - 26 years with normal facial profiles were obtained. The hard and soft tissues were three-dimensionally reconstructed by using Mimics software. The soft-tissue thickness was measured from the underlying bony surface at bilateral (frontal eminence, supraorbital, suborbital, inferior malar, lateral orbit, zygomatic arch, supraglenoid, gonion, supraM2, occlusal line, and subM2) and midline (supraglabella, glabella, nasion, rhinion, mid-philtrum, supradentale, infradentale, supramentale, mental eminence, and menton) landmarks. Results: The men showed significantly thicker soft tissue at the supraglabella, nasion, rhinion, mid-philtrum, supradentale, and supraglenoid points. In the women, the soft tissue was significantly thicker at the lateral orbit, inferior malar, and gonion points. Conclusions: The soft-tissue thickness in different facial areas varies according to gender. Orthodontists should use a different therapeutic approach for each gender.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.8 no.1
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• pp.29-38
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• 1978

The purpose of this study is to obtain the enshortening and elongation rate of image in orthopantomograph. The subjects were consisted of 15 dry skulls attached with radiopaque materials on each anatomical points. The length measurements were performed between two points on dry skull, and between two points on film. The results are as follows: 1. The enshortening and elongation rate between two anatomical points (1) ANS↔infraorbital foramen (left:+1.3%, right:+0.7%) (2) ANS↔maxillary tuberosity(left:-11.7%, right:-14.3%) (3) Zygomatic arch length(left:-4.8%, right:-8.9%) (4) first molar↔infraorbital foramen (left:+19.8%, right:+24%) (5) inter-infraorbital foramen length(-21.4%) (6) inter-first molar length (-31.8%) (7) inter-mental foramen length(+1.4%) (8) mental foramen↔mandible angle (left:+3.3%, right:+3.3%) (9) mental foramen↔lingula(left:+8.2%, right:+3.3%) (10) mental foramen↔condyle head(left:+5.2%, right:+4.5%) (11) mandible↔condyle head (left:+15.4%, right:+16.4%) 2. The closer the object is to the occlusal plane and the median line, the smaller it appears.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.3 no.1
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• pp.19-28
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• 1973

The author has studied maxillo-facial anatomical landmarks using Status X with two methods. The one has performed by application of contrast media on the human dry skull, the other has performed on living human skull as control group. Comparing the panagraphs taken by two methods, the author has drawn following results: 1. The panagraphs revealed the undistorted, highly sharp panoramic shadows of each jaw on a film. 2. Diminishing the inserted anode tube overlapping-free representation of the anterior teeth was taken. 3. Alternating the head position of the objects, direction of anode tube and film placing, the shadows of temporo-mandibular joint and zygomatic arch were taken without overlapping the other bone tissues. 4. In the panagraphs applied various shaped contrast media to each anatomical landmark, a radio-anatomical atlas which is necessary to interpret various bone tissues was taken. 5. In order to interpret panagraphic shadows easily, the author has tried this study by comparing the films of the living human skull with the films of the human dry skull applied contrast media.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.43 no.1
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• pp.42-45
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• 2017

The aim of this report was to discuss a complication resulting from a transconjunctival approach to treating an orbital fracture. A 30-year-old male patient presented with a fracture to the zygomatic orbital complex. He was treated with transconjunctival conventional surgical treatment. Two days after surgical treatment, the patient presented with secondary chemosis which was initially slight and then subsequently worsened. The clinical situation was managed with topical and systemic corticosteroids and resolved within one postoperative month. Two-year follow-up showed ptosis of the upper eyelid and limited infraversion in the affected eye. This unusual complication associated with an orbital trauma was resolved with minor functional alterations, although the consequences observed after 2 years were not completely satisfactory.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.27 no.4
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• pp.358-361
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• 2001

We had experienced a case of traumatic myositis ossificans arising in right masseter muscle, inferior to zygomatic arch occurred on 25 year old male. He had some trauma on the site one year ago and visited with complaint of mouth opening limitation and swelling. Palpable mass with facial disfigurement was noted. and several ovoid radiopaque masses were revealed on C.T. examination. On histopathologic examination, multiple bone trabeculae with osteoblasts in its periphery was noted in connective tissues and invaded to neighbouring muscles, but any chondroid components were not revealed.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.30 no.5
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• pp.434-437
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• 2004

Neural crest cells have embriologically important role for the development and growth in oral and maxillofacial region. If the early hereditary defect occurs or environmental factors affect these cells diminutive mesenchymal cells are disabled to make neural plate and decreased proliferation of mesenchymal cells result in hypoplastic development of neural crest. As a result, this brings about severe facial malformations such as various located facial clefts and/or loss or duplication of facial structure. These are two cases of accessory maxilla and zygomatic deformity with and without facial cleft.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.5 no.1
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• pp.26-31
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• 1975

The author observed a rare case of fibrous dysplasia in 12years old female who came to the Infirmary of Dental College, Seoul National University, complaining of facial asymmetry at 3 years' duration in right maxilla-facial region. The serial radiograms has been taken and the nature of the ]esion established as a typical fibrous dysplasia according to the interpreted findings in their images. The author has obtaind the results as follows: 1. Fibrous dysplasia occured at 3 years of age in this case. 2. Familial tendency, traumatic history and endocrine. disturbances: were: not noted in this patient. 3. The serial radiograms revealed a typical fibrous dysplasia encroaching Tight zygomatic bone.

• Journal of the Korean Home Economics Association
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• v.42 no.7
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• pp.165-178
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• 2004

The purpose of this study is to research the facial shape and suggest quantified data for the domestic fashion cordinaton and beauty industry. A measurement survey of 264 female college students aged from 20 to 24, was conducted with photographs of front view and later view taken by digital camera. Two hundred values were generated through the facial measurement program. In the results, for the coefficient of variance of the height was highly related with height, radial length was highly related with radial length, and breadth with highly related with breadth. However Gnation breadth, Zygomatic breadth, Philtrum breadth were lowly related and indefendent with other items.

• Journal of Genetic Medicine
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• v.10 no.2
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• pp.109-112
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• 2013

Treacher Collins syndrome (TCS) is the most common and well known mandibulofacial dysostosis with characteristic clinical features including downward slanting of palpebral fissures, coloboma of the lower eyelid, hypoplastic zygomatic arches, micrognathia, macrostomia, microtia, and other deformities of the ears. TCS is caused by mutations in at least 3 genes involved in pre-rRNA transcription: TCOF1, POLR1D and POLR1C. We experienced a 1-day-old female infant with characteristic clinical features of TCS. A novel, heterozygotic mutation within the TCOF1 gene (c.3874_3875insG, p.Ala1292Glyfs*30) was identified to cause a premature stop codon.

• Archives of Craniofacial Surgery
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• v.21 no.5
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• pp.301-304
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• 2020

Orthognathic surgeries often utilize rigid fixation for stabilization of the osteotomy site. The longterm fate of rigid fixations is still under investigation, and whether they should be routinely removed is under debate despite their low complication rates. Here, we report a case where a 26-year-old man suffered high-velocity trauma to his face 7 years after a two-jaw surgery. Computed tomography examination revealed a zygomaticomaxillary complex fracture, and open reduction and internal fixation was performed along with anterior maxillary wall reconstruction using absorbable mesh. Intraoperative examination revealed a broken L-shaped titanium plate near the fracture site with multiple bony fragments near each titanium screw. The rigid titanium system may have caused comminution of the fracture pattern, worsening the severity of the fracture.