• Korean Journal of Cleft Lip And Palate
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• v.12 no.1
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• pp.21-32
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• 2009

Generally, an adult cleft lip or/and palate patient shows some amount of maxillary deficiency due to limitation of bony growth caused by heavy scars resulted from previous operations such as a cheiloplasty and/or a palatoplasty at an early child age. To solve the problem, advancement of the maxilla is usually required during orthognathic surgery. However, severe tensional force resulted from heavy scars on the palate and/or the lip, as well as the bony defect at the cleft area limited sufficient advancement of the maxillary segment and finally caused relapse of the reposed maxilla. Therefore, distraction osteogenesis of the maxilla was introduced for the successful maxillary advancement inthose kinds of patients. As both hard and soft tissues can be simultaneously and gradually extended with this technique, tensional force caused by heavy scars opposed to forward movement of the maxilla can be reduced to an extent not to develop severe relapse of the advanced maxilla. Since distraction osteogenesis of the maxilla was applied as one of standard protocols for the treatment of the patients with severe maxillary hypoplasia dueto cleft lip and/or palate, the devices for the distraction was improved to control the vectors of distraction with better and more stable. We have treated a 23-year-old male cleft patient with a severe maxillary hypoplasia using a newly developed a maxillary distraction device and a RP model for a pre-operative simulation surgery. As a result, we could successfully move the maxilla as we designed pre-operatively and also reduce much of operation time. Therefore, we report of the case to share our experience with colleagues.

• Korean Journal of Bronchoesophagology
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• v.8 no.1
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• pp.81-86
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• 2002

Background and objectives : There may be frequent lymphatic neck metastasis among supraglottic cancer patients after their primary surgery. The aim of this study was to evaluate the effectiveness of prophylactic neck dissections in supraglottic cancer patients to lower the neck metastasis. Material and method : The authors retrospectively reviewed medical records of 52 patients (7 females. 45 males) who had received the operations for the supraglottic cancer from 1995 to 2000. They were preoperatively examined with Computer Tomographic images, and also examined by the cervical neck palpations. Postoperative pathologic specimens were reviewed and the Pathologic stagings were confirmed by the pathologist. Results : Among 52 patients who received surgery for supraglottic carcinoma, 5 patients received ipsilateral neck dissection, 12 patients received ipsilateral neck dissection with postoperative radiation therapy, 10 Patients received bilateral neck dissection and 25 patients received bilateral neck dissection with postoperative radiation treatment. In comparison of the data of N0 to N+ conversion rate of neck, there were 11 ipsilateral T3 N0 patients and 2 patients(18%) were converted to N+ status, and there were 8 Patients with T4 N0 stages, and 3 patients(38%) were converted to N+ status. In comparing the data of contralateral neck dissection on N0 patient, there were 8 patients of T3 N0 patients, and there was 1 patient (13%) who showed recurrence. There were 5 patients of T4 N0 stages and there was 1(20%) patient with recurrences. When the ipsilateral N stages were N2a, and N2b, there 1 case of contraleral N+ conversions, respectively. In recurrences, there were 2 patients of N2b staged patients and 1 patient of N2c patient that showed recurrence during the follow up period. Conclusion : This data shows that at least an ipsilateral neck dissection is necessary in order to prevent the recurrences, and also suggests that bilateral neck dissection is necessary for the higher T stage. Since the higher N staged patients showed higher rate of recurrence, so that neck dissection is mandatory for the higher N staged patients.

• Journal of the Korea Society of Computer and Information
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• v.16 no.11
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• pp.103-111
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• 2011

In this paper, we propose a Geometrical Centroid Contour Distance(GCCD) which is described by shape signature based on contour sequence. The proposed method uses geomertrical relation features instead of the absolute angle based features after it was normalized and aligned with dominant feature of the shape. Experimental result with MPEG-7 CE-Shape-1 Data Set reveals that our method has low time/spatial complexity and scale/rotation robustness than the other methods, showing that the precision of our method is more accurate than the conventional desctiptors. However, performance of the GCCD is limited with concave and complex shaped objects.

• 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.

• Korean Journal of Cleft Lip And Palate
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• v.3 no.2
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• pp.41-50
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• 2000

The alar base on the cleft side in unilateral complete cleft lip, alveolus and palate is markedly displaced laterally, caudally and dorsally, By incising the pyriform margin from the cleft margin of the alveolar process, including mucosa of the anterior part of the inferior turbinate, to the upper end of the postnasal vestibular fold, the alar base is released from the maxilla, A physiological correction of nasal deformity can be accomplished by careful reconstruction of nasolabial muscle integrity, functional repair of the orbicular muscle, raising and rotating the displaced alar cartilage, and finally by lining the lateral nasal vestibule, The inferior maxillary head of the nasal muscle complex is identified as the deeper muscle just below the web of the nostril, The muscle is repositioned inframedially, so that it is sutured to the periosteum that overlies the facial aspect of the premaxilla in the region of the developing lateral incisor tooth, And then, the deep superior part of the orbicular muscle is sutured to the periosteum and the fibrous tissue at the base of the septum, just in front of the anterior nasal spine, The nasal floor is surgically created by insertions of the nasal muscle complex in deep plane and of the orbicular muscle in superficial one, The upper part of the lateral nasal vestibular defect is sutured by shifting the alar flap cephalically, The middle and lower parts of this defect are closed by use of cleft margin flaps of the philtral and lateral segments, respectively, Authors stress the importance of nasal floor reconstruction at primary surgery and report the technique and postoperative results.

• Phonetics and Speech Sciences
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• v.2 no.4
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• pp.165-171
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• 2010

Vocal process granuloma can occur commonly by laryngopharyngeal reflux (LPR), vocal abuse or misuse. It has been reported that voice therapy is employed with medication therapy for the patients who has vocal process granuloma, however research about effect of voice therapy can be hardly founded. For that matter, the primary aim of this study was to evaluate the effect of therapeutic method we implement. Thirty one patients who has been diagnosed with vocal process granuloma from January, 2007 to June, 2009 participated in this study. 19 patients among them are provided voice therapy and medication, 12 patients take only medication. Voice therapy is implemented ranging from 5 to 19 sessions (mean: 8.6 sessions). We provided explanation about problem each patient has, voice rest, SKMVTT$^{(R)}$, abdominal breathing, and relaxation in session. All subjects were examined by videostroboscopy, perceptual assessment, acoustic and aerodynamic measures. Consequantly, the greater part of the patients (78.9%) who is treated by voice therapy and medication are confirmed disappearance or decrease of granuloma, it shows better results compared with the group provided only medication (66.7%). Especially, the period of drug administration is 3.7 months in the group runs parallel with voice therapy, the period of other group is 7.8 months. The results of acoustic and aerodynamic measures after treating indicates there are significant decrease in Jitter, Shimmer, and NHR, and increase in MPT, Psub (p<.05). However, there is no large difference statistically even though voice quality has improved since the therapy. In conclusion, it is verified that the voice therapy to the vocal process granuloma patients taking medication is effectual method, we recommend combining voice therapy with medication when treatment is needed for the vocal process granuloma patients.

• Korean Journal of Bronchoesophagology
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• v.10 no.1 s.19
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• pp.35-40
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• 2004

Adhesion molecules have been implicated in tumor progression. In this study, we aimed to investigate serum soluble intercellular adhesion molecule-1 (ICAM-1) and sialic acid (SA) levels in oral cavity cancer and laryngeal cancer and correlate their levels with cancer progression. Method : The sera from 31 patients with advanced oral cavity cancer (5 at stage III, 10 at stage IV) and advanced laryngeal cancer (1 at stage III, 15 at stage IV) were extracted before treatment. The concentrations of ICAM-1 was measured by Endogen kit (measured absorbance at 490nm) and the concentration of SA was measured by Roche kit (measured absorbance at 550nm). Respectively, gained data was compared with those from a control group (n=12). Result : Mean serum ICAM-1 and SA levels were found to be higher in oral cavity cancer group and laryngeal cancer group than control group. But statistical meaning was at SA (p<0.001, oral cavity cancer and laryngeal cancer versus control). Conclusion : These data reveal that the significant correlations serum SA level in advanced oral cavity cancer and laryngeal cancer. Serum ICAM-1 level was higher at advanced oral cavity cancer and laryngeal cancer than at control group but that was not significant.

• Korean Journal of Medicinal Crop Science
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• v.17 no.6
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• pp.379-387
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• 2009

The aim of this investigation was to examine the influence of extrusion on dietary fiber profile and the content of bioactive compounds, rutin and quercetin in young sprout, whole seed, and matured stem of Tartary buckwheat. WSI(water soluble index) is increased by a function of both screw profile and process temperature, compared to control in different parts of Buckwheat. Also, WSI of ME is increased more than 5.2 times in grain, compared to that of control. The effect of precooking by extrusion on the dietary fiber profile of buckwheat flour was evaluated. Precooking by extrusion significantly increased SDF in flour, although in most cases extrusion decrease in TDF a little. The thermo-mechanical treatment undergone by the buckwheat flour during extrusion led to redistribute part IDF fraction to SDF, leading to an increase in the latter. The content of rutin was increased about two fold in extruded flour of sprout, compared to in control. This increase maybe why these compounds are released from cell wall by high shear processing under high temperature.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.12a
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• pp.119-122
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• 2006

Process variables for manufacturing the $CuInSe_2$ thin film were established in order to clarify optimum conditions for growth of the thin film depending upon process conditions (substrate temperature, sputtering pressure, DC/RF Power), and then by changing a number of vapor deposition conditions and Annealing conditions variously, structural and electrical characteristics were measured. Thereby, optimum process variables were derived. For the manufacture of the $CuInSe_2$, Cu, In and Se were vapor-deposited in the named order. Among them, Cu and In were vapor-deposited by using the sputtering method in consideration of their adhesive force to the substrate, and the DC/RF power was controlled so that the composition of Cu and In might be 1:1, while the surface temperature having an effect on the quality of the thin film was changed from 100[$^{\circ}C$] to 300[$^{\circ}C$] at intervals of 50[$^{\circ}C$].

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.12a
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• pp.96-100
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• 2006

A pulsed laser ablation deposition (PLAD) technique is an excellent method for the fabrication of amorphous carbon (a-C) films. This paper was focused on the understanding and analysis of the motion of carbon atom (C) and carbon ion ($C^+$) particles in laser ablation assisted by Ar plasmas. The simulation has carried out under the pressure P=10~100 mTorr of Ar plasmas. Two-dimensional hybrid model consisting of fluid and Monte-Carlo models was developed and three kinds of the ablated particles which are C, $C^+$ and electron were considered in the calculation of particle method. The motions of energetic $C^+$ and C deposited upon the substrate were investigated and compared.