• The Journal of the Korean dental association
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• v.52 no.10
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• pp.623-632
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• 2014

The facial asymmetries include maxillary, mandibular, and chin asymmetries, although the most common deformity is primarily in the mandible. Common causes of this type of asymmetry can include asymmetric growth of the condyle or the mandible. In these patients, the location of the Me would be deviated to the shorter side because of the asymmetric growth of the mandible, and, commonly, the maxillary occlusal plane would be tilted toward the deviated side because the maxilla likely grows asymmetrically according to the pattern of asymmetric mandibular growth. Three-dimensional CT images are ideal for evaluating the size and location of anatomic structures, and such reconstructed images allow the use of software that can show anatomic structures from numerous angles, allowing actual measurements of distances and angles without problems of magnification, distortion, or superimposition caused by 2-dimensional imaging. In the present study using 3D-CT imaging, the 8 parameters, including measurements of the upper midline deviation, maxillary canting in the canine and first molar regions, width of the upper arch, width of the mandible at the Go, vertical length of the ramus, inclination of the ramus, and deviation of the Me were easily measured. The dentition should be orthodontically decompensated and dental midline should ensure incisor midlines positioned in the midline of each jaw before surgical correction. Surgical correction could be considered such as canting or yawing correction in the frontal or horizontal aspect, respectively.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.31 no.5
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• pp.381-385
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• 2009

Objective : The objective of this study was to compare the surgical techniques for the correction of congenital cleft palate. Techniques and approaches : Four-hundred-sixity patients operated between 1993 and 2008 were included in this study. The collected data were age, sex, operating time, admission days, and complications. The comparison between techniques were done by independent t-test. Results: The majority (86.9 %) of patients were received the operation later than 1.5 years old. The distribution of each surgical technique was 43.8 % by Bardach palatoplasty, 11.9 % by Furlow palatoplasty, 1.8 % by Veau palatoplasty, and 42.4 % by the new technique developed by us. Postoperative complication such as wound dehiscence, formation of oro-nasal fistulas in the soft and hard palates were shown in 23.0 % of Bardach technique, 44.2 % of Furlow technique, and 37.5 % of Veau technique. However, only 5.4 % of patients were shown complications in our technique (P<0.001). The operation time was recorded 70 minutes under new technique while the others were 110 minutes (P<0.001). The clinical treatment at hospital was required 7.4 days for our technique and 11.3-15.5 days for the other methods. Conclusion : The surgical treatment of congenital cleft palate in Mongolia was conducted later than proper timing for surgery. As the results were indicated, our new technique should be considered for the correction of cleft palate in old aged patients.

• Archives of Plastic Surgery
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• v.38 no.2
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• pp.161-165
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• 2011

Purpose: Zygomaticomaxillary complex (ZMC) fracture is one of the most common facial injuries after facial trauma. As ZMC composes major facial buttress, it is a key element of the facial contour. So, when we treat these fractures, the operator should have a concern with the symmetry to restore normal appearance and function. But sometimes, unfavorable results may occur. The aim of this study is to analyze the unsatisfied midfacial contour after ZMC fractures reduction retrospectively and to point out the notandum. Methods: 369 patients, treated for fractures of the ZMC were included in the study. After the operation, such as open reduction and internal fixation (ORIF with titanium or absorbable materials), open reduction, and closed reduction, midfacial contour was evaluated with plain films and 3-dimensional computed tomography. And unfavorable asymmetric midfacial contours were correcterd by secondary correction and re-evaluated. Gross photographs were obtained at outpatient clinic. Results: Total of 38 patients had got a facial asymmetry and among of them 24 patients were treated secondary revisional ORIF operations for correction of unfavorable result of after primary reduction. Two of them had received tertiary operations, three patients had got osteotomy more than after one year and six patients had got minor procedures. The etiology of asymmetry were lateral displaced simple fracture of arch (n=2), lateral displaced comminuted fracture of arch (n=6), comminuted arch fracture combined posterior root fracture (n=9), and communited arch and body fracture (n=12), severely contused soft tissue (n=9). After the manipulations outcomes were acceptable. Conclusion: To prevent the asymmetry in ZMC fracture reduction, complete analysis of fracture, choice of appropriate operation technique, consider soft tissue, and secure of zygoma position are important. Especially, we should be more careful about communited fracture of zygomatic body and lateral displacement, root fracture of zygomatic arch. Because they are commom causes that make facial asymmetry. To get optimal result, ensure the definite bony reduction.

• Archives of Plastic Surgery
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• v.33 no.2
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• pp.237-240
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• 2006

The simultaneous correction of the hypertelorism and exophthalmos combined with craniosynostosis is very rarely performed operative procedures in the world. The craniosynostosis is the congenital anomaly that designates premature fusion of one or more sutures in either cranial vault or cranial base. Hypertelorism is not a distinct clinical syndrome in itself, but is a physical finding secondary to facial and cranial maldevelopment and it is defined as a increase in the distance between the medial orbital walls. Exophthalmos can occur following the decrease in the size of the orbit in patients with developmental skeletal disorders such as craniofacial synostosis. The authors experienced 9-year-old male patient, who has complex cranio-facial abnormality. The craniosynostosis was oxycephaly type and primary fronto-orbital advancement surgery had been performed in other hospital. The abnormal cranial vault combined with hypertelorism and exophthalmos due to maldeveloped both orbital walls. Surgical correction was obtained by various cranio-fronto-orbital remodeling technique such as calvarial bone craniotomy, fronto-orbital advancement, paramedian resection, medial canthopexy, Tessier-Wolfe three wall orbital expansions. We achieved a quite satisfactory result both functionally and aesthetically in a complex cranio-facial deformity patient by combination and modification of previously developed various cranio-facial plasty technique and hereby report the case with brief discussion and review of literature.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.13 no.1
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• pp.82-87
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• 1991

Hemifacial microsomia is a term used to describe a facial anomalies caused by the defect of anatomic structures originated from the first and the second branchial arches. The defect area encompasses some facial areas including mandible, facial muscles, masticatory muscles, cranial nerves, auricles, etc., and the degree of manifestations of the anomalies is extmely diverse. A 20-year-old man complaining of facial asymmetry and malocclusion visited our hospital. An orthognathic surgery was performed for the correction of hard tissue anomalies and then autogenous dermis-fat autotransplantation was done for the improvement of remaining soft tissue defect. The result was esthetically good and the case was presented here.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.14 no.4
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• pp.305-313
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• 1992

Facial asymmetry can be most distressing for the young child and parents. It can cause functional problems as a result of malocclusion. Classification of facial asymmetry has not been yet well-organized because of its varieties on etiologic factors, involved sites and clinical expressions. Even though, we don't know its causes definitely. It is generally believed that problems with aberrant pattern of condylar growth are related to facial asymmetry. This is a case report on surgical correction of the patients who had severe facial asymmetry. One patient was diagnosed as condylar hyperplasia and the other was diagnosed as a condylar hypoplasia related to trauma. We performed a simultaneous two-jaw surgery, condylar shaving, inferior border ostectomy of affected mandible in the former case, and a simultaneous two-jaw surgery, reverse-L osteotomy and alloplastic implantation with $Biocoral^{TM}$ in the latter case. The postoperative results of the two cases were excellent functionally and esthetically.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.3
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• pp.499-505
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• 2003

This paper proposes methods to extract face elements and facial characteristics points for face recognition. We select a candidate region of the face elements with geometrical information between them inside the extracted face region with skin color and extract them using their inherent features. The facial characteristics to be applied to face recognition is expressed with geometrical relation such as distance and angle between the extracted face elements. Experiment results shows good performance to extract of face elements.

• Archives of Plastic Surgery
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• v.40 no.6
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• pp.715-720
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• 2013

Background Many people have an interest in the correction of facial scars or deformities caused by trauma. The increasing ability to correct such flaws has been one of the reasons for the increase in the popularity of facial plastic surgery. In addition to its roles in communication, breathing, eating, olfaction and vision, the appearance of the face also plays an important role in human interactions, including during social activities. However, studies on the importance of the functional role of facial appearance. As a function of the face are scare. Therefore, in the present study, we evaluated the importance of the functions of the face in Korea. Methods We conducted an online panel survey of 300 participants (age range, 20-70 years). Each respondent was administered the demographic data form, Facial Function Assessment Scale, Rosenberg Self-Esteem Scale, and standard gamble questionnaires. Results In the evaluation on the importance of facial functions, a normal appearance was considered as important as communication, breathing, speech, and vision. Of the 300 participants, 85% stated that a normal appearance is important in social activities. Conclusions The results of this survey involving a cross-section of the Korean population indicated that a normal appearance was considered one of the principal facial functions. A normal appearance was considered more important than the functions of olfaction and expression. Moreover, a normal appearance was determined to be an important facial function for leading a normal life in Korea.

• Journal of Chest Surgery
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• v.23 no.6
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• pp.1251-1255
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• 1990

B] familial: normal faces and intelligence; C] nonfamilial syndrome with abnormal facial appearance and mental retardation. Recently, we experienced a boy with type C characteristics of this syndrome and surgical correction which was consisted of a vertical incision across narrowed segment of the aorta, with the insertion of a prosthetic, Goretex patch, was performed successfully.

• Archives of Plastic Surgery
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• v.36 no.4
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• pp.469-474
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• 2009

Purpose: A lower facial contouring surgery has become a commonly performed procedure in Asia. Currently, mandibular angle sagittal ostectomy and botulinum toxin type A treatment are main procedures for aesthetic correction of a broad lower face. There are a few date to show the differences in the mandibular contouring changes between mandibular angle splitting ostectomy and botulinum toxin type A treatment. Facial golden mask is easy to apply, inexpensive, and relatively objective for evaluation of facial contour analysis. This study was designed specifically to compare the changes in lower face width after two different forms of lower facial contouring procedure using facial golden mask. Methods: Seventeen patients, aged 18 to 55 years (mean, 28.6 years), 15 women and 2 men, consented to the study and receive a contouring procedure of lower face. The patients were classified in to 2 groups. In group A, the sample consisted of 10 patients with a prominent squared mandibular angle and mandibular angle splitting ostectomy was performed. In group B, the sample consisted of 7 patients with masseteric hypertrophy and botulinum toxin type A treatment was performed. Photographs of the face were taken to record the facial change at preoperative and postoperative. The postoperative photographs were taken to considered maximal effect at 2 years after surgery in group A and 4.8 months after treatment in group B. The authors applied the facial golden mask to preoperative and postoperative photographs and horizontal ratio, which compares facial width with golden mask width, were calculated. We made an analysis of the result of horizontal ratio using SPSS. Results: Overall average horizontal ratio of pre- and postoperative photos of group A were 1.24 and 1.11, whereas overall average horizontal ratio of pre- and postoperative photos of group B were 1.19 and 1.12. The horizontal ratio decreased 10.24% in group A and 5.93% in group B. There was a statistically significant change in before and after treatment, but there was no significant change in comparing the group A and group B. Conclusions: The result from this study suggest that mandibular angle sagittal ostectomy and botulinum toxin type A treatment showed relatively satisfactory clinical effects on lower facial contouring treatment. There was no statistical significant difference within two lower facial contouring treatment. Facial golden mask is easy to apply, inexpensive, and relatively objective, so we think that facial golden mask is a good method for evaluation of lower facial contouring treatment.