• Korean Journal of Cleft Lip And Palate
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• v.15 no.1
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• pp.11-20
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• 2012

A national wide survey was conducted to assess a present condition in management of cleft and craniofacial anomaly patients and training program of orthodontic residents in Korea. A questionnaire consisting of four categories and 19 question items was distributed to 131 residents of department of orthodontics of eleven dental university hospitals and nine medical university hospitals. The results were as follows:(1) 77.1% of residents are participating in treatment of cleft and craniofacial anomaly patients.(2) Only 47.3% of residents are willing to treat cleft and craniofacial anomaly patients in their future practice.(3) 64.9% of residents responded that they are currently treating one to ten cleft and craniofacial anomaly patients per resident.(4) Most university hospitals offer training programs focusing on embryopathogenesis, growth, and treatment, but training programs about speech and hearing, genetics, and psychosocial development are inadequate.(5) 37.4% of residents are willing to participate in fellowship program for cleft and craniofacial anomaly after finishing the training. Based on the results of this survey, the residents need motivation regarding treatment of cleft and craniofacial anomaly patients, and the educational programs need to be reinforced and reconstructed so that standardization among hospitals can be achieved.

• Archives of Craniofacial Surgery
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• v.24 no.1
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• pp.28-31
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• 2023

The radial forearm free flap (RFFF) has become popular for head and neck reconstructions. Owing to a constant anatomy the RFFF is relatively easy to dissect. Nevertheless, anatomical variations of the radial artery have been reported. Some variations could affect the survival of the flap. This paper reports an unusual anomaly of the radial artery where the radial artery was not located between the brachioradialis (BR) and flexor carpi radialis. The radial artery was observed above the BR and on the radial side of the BR. The survival of the elevated flap was deemed questionable because it had only few perforators. So we decided to discard the flap and to elevate another free flap for the head and neck defect. The donor area on the forearm was covered using the original skin of the first flap as a full-thickness skin graft. This case highlights a means to deal with anomalies of the radial artery encountered during the elevation of RFFF and the checking process for variations of the radial artery before RFFF.

• Archives of Craniofacial Surgery
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• v.9 no.2
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• pp.90-92
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• 2008

Purpose: Congenital upper eyelid defect is rare anomaly whether it is compared with syndromic anomaly or not. It has many clinical manifestation in the extent, location. Many operation procedures such as simple closure, semicircular rotation flap, Cutler Beard procedure, lower lid rotation flap, etc can be used to reconstruct eyelid defects. We intend to introduce a simple, congenital eyelid defect which was not compared with syndromical anomaly, ophthalmic complication. Methods: Our experience is a case of 19 years old female who had a upper eyelid coloboma without any other anomalies. we could not find any skeletal deformity in orbital CT scan. she had no ophthalmic problem. we reconstructed the defect with bilateral marginal flap after deepithelization of supramarginal area and tarsal reposition. Results: There were no visible deformity of lid lining. postoperative scar was favorable. satisfactory results were obtained in cosmetic and functional aspects. Conclusion: Upper lid coloboma without other anomalies is rare. we obtained satisfactory outcome as treated this rare case with marginal flap advancement.

• The korean journal of orthodontics
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• v.20 no.3 s.32
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• pp.593-608
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• 1990

Facial cleft is not a common anomaly of craniofacial region. But it is often accompanied with cleft lip and/or palate, so it seems important to orthodontist. Facial cleft is defined as a fissure or elongated opening of the facial region, and it's etiology is the failure of the fusion of the parts which will form the face in embryonic developmental period. Facial cleft can be classified according to the time of occurrence and the area involved during developmental period. It developes 1-2.5 weeks earlier than cleft lip and/or cleft palate. In facial cleft, the deformity is generally confined to the facial region, but sometimes deformity of other body region can accompany. The interaction of the facial cleft and the genetic anomaly is not confirmed, but genetic anomaly is known to be able to occur with the patient with other anomaly of body. As an orthodontist we should know the general considerations of facial cleft and it's treatment procedures other than orthodontic treatment.

• Archives of Craniofacial Surgery
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• v.20 no.6
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• pp.397-400
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• 2019

Frontonasal dysplasia is an uncommon congenital anomaly with diverse clinical phenotypes and highly variable clinical characteristics, including hypertelorism, a broad nasal root, median facial cleft, a missing or underdeveloped nasal tip, and a widow's peak hairline. Frontonasal dysplasia is mostly inherited and caused by the ALX genes (ALX1, ALX3, and ALX4). We report a rare case of a frontonasal dysplasia patient with mild hypertelorism, a broad nasal root, an underdeveloped nasal tip, an accessory nasal tag, and a widow's peak. We used soft tissue re-draping to achieve aesthetic improvements.

• Archives of Craniofacial Surgery
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• v.24 no.3
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• pp.91-104
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• 2023

Unilateral cleft lip is a common congenital anomaly that affects the appearance and function of the upper lip and nose. Surgical repair of cleft lip aims to restore the normal anatomy and functionality of the affected structures. In recent years, several advances have been made in the field of cleft lip repair, including new surgical techniques and approaches. This comprehensive review discusses the surgical management of patients with unilateral cleft lip and palate and provides step-by-step instructions for the surgical procedures.

• The korean journal of orthodontics
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• v.29 no.5 s.76
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• pp.511-519
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• 1999

The shape of orthodontic retraction spring was varied and force system of each case was obtained using numerical analysis and verified with spring tester. The factors for obtaining biomechanically efficient spring under anatomic limitation were suggested as follows. 1. M/F ratio increases and L/D rate decreases as loop height increases. 2. M/F ratio increases and L/D rate decreases as incorporating more wire above minimum bending moment area. 3. M/F ratio decreases and L/D rate decrease as incorporating more wire below minimum bending moment area. 4. M/F ratio can not be greater than spring height no matter how much wire is incorporated at the apex of the loop. 5. Additional moment is necessary to obtain enough M/F ratio for translation under anatomical limitation. 6. Additional moment should be incorporated at every pah of the spring because M/F ratio and L/D rate decreases as horizontal spring length increases. 7. Material, cross section, and shape of the spring influence L/D rate, whereas M/F ratio is influenced by the shape of the spring independent from material and cross section.

• The korean journal of orthodontics
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• v.30 no.4 s.81
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• pp.467-473
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• 2000

As a rectangular wire Is inserted into edgewise brackets the wire exerts a force system three-dimensionally. The force system may include bending force in first and second orders and a torsional force in third order Analytical and experimental studies on bending force have been Introduced, but information about torsion is still lack. The purpose of this study was to estimate the torsional moment in the force system of rectangular arch wires through theoretical and experimental studies. Wires most frequently used for third order control were selected as study materials. Cross sections of 0.016x0.022, 0.017x0.025, 0.019x0.025 inch rectangular wires in foot different materials such as stainless steel(Ormco), TMA(Ormco), NiTi(Ormco), and braided stainless steel (DentaFlex, Dentaurum) were used. The torque/twist rate of each test material was calculated using the torsion formula. Torque/twist rate, yield torsional moment, and ultimate torsional moment were measured with a torque gauge. The torsion formula assesses that the torque/twist rate (T/$\theta$) is proportional to the characteristics of material (G) and cross section (J), and is inversely proportional to the length of wire (L). Most experimental results corresponded with the formula. The relative stiffness was calculated for reference to a logical sequence of wire changes.

• Archives of Craniofacial Surgery
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• v.19 no.1
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• pp.48-50
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• 2018

Bony anomaly caused by lip tie is not many reported yet. There was a case of upper lip tie wrapping into the anterior premaxilla. We represent a case of severe upper lip tie of limited lip motion, upper lips curling inside, and alveolar hypoplasia. Male patient was born on June 3, 2016. He had a deep philtral sulcus, low vermilion border and deep cupid's bow of upper lip due to tension of short, stout and very tight frenulum. His upper lip motion was severely restricted in particular lip eversion. There was anterior alveolar hypoplasia with deep sulcus in anterior maxilla. Resection of frenulum cord with Z-plasty was performed at anterior premaxilla and upper lip sulcus. Frenulum was tightly attached to gingiva through gum and into hard palate. Width of frenulum cord was about 1 cm, and length was about 3 cm. He gained upper lip contour including cupid's bow and normal vermilion border after the surgery. This case is severe upper lip tie showing the premaxillary hypoplasia, abnormal lip motion and contour for child. Although there is mild limitation of feeding with upper lip tie child, early detection and treatment are needed to correct bony growth.

• Archives of Craniofacial Surgery
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• v.24 no.4
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• pp.145-158
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• 2023

Vascular anomalies encompass a variety of malformations and tumors that can result in severe morbidity and mortality in both adults and children. Advances have been made in the classification and diagnosis of these anomalies, with the International Society for the Study of Vascular Anomalies establishing a widely recognized classification system. In recent years, notable progress has been made in genetic testing and imaging techniques, enhancing our ability to diagnose these conditions. The increasing sophistication of genetic testing has facilitated the identification of specific genetic mutations that help treatment decisions. Furthermore, imaging techniques such as magnetic resonance imaging and computed tomography have greatly improved our capacity to visualize and detect vascular abnormalities, enabling more accurate diagnoses. When considering reconstructive surgery for facial vascular anomalies, it is important to consider both functional and cosmetic results of the procedure. Therefore, a comprehensive multidisciplinary approach involving specialists from dermatology, radiology, and genetics is often required to ensure effective management of these conditions. Overall, the treatment approach for facial vascular anomalies depends on the type, size, location, and severity of the anomaly. A thorough evaluation by a team of specialists can determine the most appropriate and effective treatment plan.