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감압술과 국소마취하 적출술을 통한 하악골 낭종의 치험례
차용훈,김형준,차인호,남웅,Cha, Yong-Hoon,Kim, Hyung-Jun,Cha, In-Ho,Nam, Woong 대한구강악안면외과학회 2010 대한구강악안면외과학회지 Vol.36 No.4
Various treatment methods for huge cystic lesion of the jaw exist, such as, resection of the involved bone, enucleation and decompression. Among these methods, enucleation after decompression is a conservative technique that decreases the size of the cystic cavity and reduces the risk of intrabony defects, which could be induced by primary enucleation. In addition, it can save the adjacent anatomic structures. In these cases, the decompression combined with partial enucleation, which was performed before complete cyst enucleation was performed on huge cystic lesions of the mandible. During the process, a decrease in the size of the lesion and the growth of normal oral tissues was observed. The size of the lesion decreased until the time of complete enucleation, and surgery could be performed under local anesthesia. No damage to inferior alveolar nerve was observed. We report these cases with a review of the relevant literature.
차용훈(Yong-Hoon Cha),김범준(Bum-Joon Kim),임재형(Jae-Hyung Lim),박광호(Kwang-Ho Park),김형곤(Hyung-Gon Kim),허종기(Jong-Ki Huh) 대한구강악안면외과학회 2010 대한구강악안면외과학회지 Vol.36 No.6
Introduction: This study examined the treatment patterns of temporomandibular disorders (TMD) including conservative and surgical procedures. Materials and Methods: Patients with TMD who visited Gangnam Severance Hospital from June 2007 to May 2008 were enrolled in this study. All patients were examined from the orthopantomogram, temporomandibular joint (TMJ) tomography, and a clinical examination. The patients who required a further evaluation were examined by magnetic resonance imaging and/or computed tomography. The treatment patterns were divided into counseling, medication, splint therapy, botulinum toxin injection (BTI) and surgical treatment. Results: Among the 2,464 patients, the average age was 31.8 years (ranging from 6 to 93); 764 (31.0%) were male and 1,700 (69.0%) were female. 2,355 (95.6%) patients were treated with conservative therapy; 1,460 (62.0%) patients were treated with medication, 931 (39.5%) patients were treated with splint, and 46 (2.0%) were treated with BTI. There were 109 (4.4%) patients treated surgically. Eight (0.3%) patients were treated with total temporomandibular joint replacement surgery. Conclusion: Almost all patients with TMD were treated using conservative methods. Those patients who received surgical treatment because of an ineffective response to conservative treatment had definite problems with the internal derangement and/or osteoarthritis or had severe clinical symptoms.
김범준,차용훈,임재형,박광호,허종기,Kim, Bum-Joon,Cha, Yong-Hoon,Lim, Jae-Hyung,Park, Kwang-Ho,Huh, Jong-Ki 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.6
Purpose: Anatomical reduction of the fractured condylar process is an important prerequisite for re-establishing function. The authors reported about effectiveness of transoral approach for mandibular subcondyle fracture using trochar device in cases that the fracture line is below the reference line, the perpendicular line of the longitudinal axis of condylar process passing the lowest point of sigmoid notch. As a serial study, we report the open reduction via preauricular approach for mandibular condyle fracture, in cases that the fracture line is above the reference line. Patients and Methods: Sixteen condylar fractures of 15 adult patients were divided two groups and treated by open reduction via preauricular approach (8 cases) or by closed reduction (8 cases). The degree of maximal mouth opening, occlusion, anatomical reduction, condylar resorption and complications were assessed and evaluated for the two groups. Results: The open reduction of condyle via preauricular approach leads to good results without permanent complications. Anatomical reduction of open reduction group and maximal mouth opening range of the closed reduction group is significantly better than the other group. No significant differences were found in the condylar resorption and the occlusion. Conclusion: The preauricular approach was useful to reduce and fix the condylar fragment, in cases that the fracture line is above the reference line.
LBP Polygon Mirror 나노가공 부품의 가공조건에 따른 표면정밀도 향상에 관한 연구
성백섭(Back-Sub Sung),차용훈(Yong-Hoon Cha),김일수(Ill-Soo Kim),김선진(Sun-Jin Kim) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
Recent advances in high-tech industry and ultra precision machining technology have led to the development of a wide variety of new materials. The demand for LBP Polygon Mirror finishing parts has increased, which are mainly used for the motor of the printer. so ultra precision machining technology is required. It is important for Polygon Mirror to have the enough strength for the high-speed rotation and high quality Polygon line surface. Polygon Mirror, high-tech nano finishing part, is used for optical instrument such as laser printers, digital copiers, laser fax machines and bar -code readers, etc. Therefore, we have evaluated the machining precision of material surface and tried to determine the optimum machining conditions in order to improve machining precision of S3M. Also we have applied to the production line to reduce the defective proportion. As a result, we have obtained high quality precision of side surface machining in case that the number of revolutions, speed and movement were constant and cutting rate was 0.05㎜. Also we have obtained the same results from the 30 test specimens with constant rough-cutting during the Polygon line machining. The defective proportion decreased from 12 percent to 4~6 percent when the machining conditions selected during the test were applied to the real production line. It is expected that the defective proportion of products can be reduced if we conduct further research on the cleaning and heat treatment process.