한국인 하악 제3대구치(지치)의 맹출상황에 대한 연구

윤중호(Jung Ho Yoon) 대한구강악안면외과학회 1999 대한구강악안면외과학회지 Vol.25 No.3

One of the most common operations which have been performed on young adults may be the extraction of third molars. And then, we can meet many reports on third molars which were studied by lots of specialists. Many domestic reports which dealt with pathologic condition, impaction, eruption and angulation state of third molars have already been reported. The author reported the statistical survey on mandibular third molars of Korean through dental radiography in 1963. Until now, the extraction of third molars may be one of the most common operation which were done at the department of oral & maxillofacial surgery in dental hospital. But, the more we can see certain diseases easily, the more we can neglect to study on it So now, it s true that we cannot meet the reports about the third molars. The author performed the clinical study on the eruption state of mandibular third molars of Korean and compared with the results in 34 years ago. Following results were obtained 1. It was found that the largest number was Class Ⅰ(483 cases) among the total 1004 cases in the relation of the tooth to the ramus of the mandible and second molar. 2. In Class Ⅰ, the number of cases was increased in more than 17-year-old age. In Class Ⅱ, the number of the cases was decreased as it grows older. 3. It was found that sex distributions were equal in the classification of Gregory. And the largest case number was Class Ⅰ in both of male and female. 4. The mesio-angular position in all cases was the largest number. Among Class Ⅰ, Ⅱ, and Ⅲ, Class Ⅲ was the only group that distoangular position was found. Horizontal positions were found in Class Ⅱ, Ⅲ more than in Class Ⅰ. Vertical positions were found in Class Ⅰ more than in Class Ⅱ. 5. In Winter s classification the largest case number was the meio-angular position in both of male and female and sex distributions were equal in all positions. 6. In Winter s classification, the largest case number was the mesio-angular position in all ages.

下顎骨 陳舊性 顆頭突起 骨折 및 脫臼의 治驗例

Yoon Jung Ho(尹仲鎬),Kim Il Kyu(金一圭),Lee Eui Wung(李義雄) 대한구강악안면외과학회 1980 대한구강악안면외과학회지 Vol.6 No.1

This is a case report on the old fracture- dislocated mandibular condylar process corrected by condylectomy. Fracture. dislocation of the mandibular condylar process was caused by car accident. This case report could be summerized as follows. 1. Fracture of the condylar process of the mandible resulted in the limitation of the mandibular movement, difficulty of the mastication and the malocclusion accompaning the pain. 2. Reduction of the mandibular condylar process was difficult because of the atrophy of the joint capsule and the significant scarring and fibrous filling of the vacated joint space. 3. In the patient with old fracture-dislocation of the mandibular condylar pro cess, condylectomy was necessavy. 4. In the patient with unilateral condylectomy, occlusal condition returned to normal, but slight mandibular deviation toward operation site was noted in maximum mouth opening.

X-線像에 依한 韓國人 上顎正中部 過剩齒에 關한 硏究

Jung Ho Yoon(尹仲鎬),Kee Seo Koo(具箕書),Eui Wung Lee(李義雄) 대한구강악안면외과학회 1976 대한구강악안면외과학회지 Vol.2 No.1

Authors reviewed 128 cases of mesiodens of 106 patients through dental standard periapical film. The main point of studies were focused on the sexual and age difference, condition of impaction, location, number, shape, width of mesiodens, depth of impaction, condition of eruption of mesiodens, and interrelation of median diastema to mesiodens. The following results were obtained: 1. Mesiodens were found dominantly in male(79 cases, 74.53%) than in female (27 cases, 25.47%) 2. Most frequent age group was 0~10 years of age(43 cases, 40.57%). 3. Most mesiodens were observed in the region of palatal midline suture 52 cases (40.63%) close to the root apices of upper central incisors. 4. One mesiodens was found in 82 cases(77.36%) while two mesiodens were in 24 cases(22.64%). 5. Normal shape of mesiodens was found in 92 cases(71 88%) and abnormal cases were in 36 cases(28.13%) 6. Most frequent width of mesiodens was median sized type(5.0-6.0mm). 7. Normal impaction was 68 cases(53.13%) while inverted cases were 48 cases (37.50%) 8. Impaction rate of mesiodens was(58.59% ) in 75 cases and its depth was 11.79mm in mean value. 9. 54 cases showed median diastema(50.94%) and width of diastema was 3.58mm in mean value.

Temporalis muscle as a disc replacement in the temporomandibular joint of sheep

윤중호(Jung Ho Yoon),Gerard M Thyne,Neil H Luyk,Malcolm D Mcmillan 대한구강악안면외과학회 1992 대한구강악안면외과학회지 Vol.18 No.3

저자는 양에서 측두하악관절원판 절제후 측두근피판을 이의 대체물로서 삽입한 후 2주, 4주, 12주 및 24주째의 변화를 병리조직학적으로 관찰한 바, 측두근피판이 초기에는 무혈관성 괴사를 보이다가 점차 관절강 내에서 소실되어 결국 관절와와 하악과두가 밀접하게 집적 접촉함을 관찰할 수 있었다. 한편 측두근피판을 관절측방조직에 봉합한 수술 대조군에서는 4, 12, 24주째 군에서 모두 근피판이 생존하였고 일부는 섬유성 조직으로 잔존 하였다. 관절와와 하악과두의 표층은 초기에 소실되었다가 시간이 경과하면서 원래의 조직으로 재형성되었다. 본 실험 결과, 양에 있어서의 측두하악관절강에 삽입한 측두근피판은 저작기능 부하(압력)에 지탱할 수 없었으며 관절강 내에 원판과 같은 대체물이 없어도 하악과두나 관절와가 재형성 됨을 보여 주었다. Temporalis muscle flaps were evaluated in sheep. Flaps placed as interpositional material following meniscectomy were examined at 2, 4, 12 and 24 weeks. Histological evaluation of these muscle flaps showed avascular necrosis, subsequent displacement and loss of tissue from the joint in operative controls were examined at 4, 12 and 24 weeks. This muscle remained viable while undergoing fibrous replacement. The surface layers of the condyle and fossa were initially lost, but he tissues were reformed loading within the joint. Despite the lack of interpositional material the condyle and fossa can remodel.

下顎骨 上行枝의 垂直 骨折斷術에 依한 下顎 前突症의 治驗例

Jung Ho Yoon(尹仲鎬),Jae Duck Choi(崔在德),Eui Wung Lee(李義雄),Hyung Sik Park(朴亨植) 대한구강악안면외과학회 1977 대한구강악안면외과학회지 Vol.3 No.1

Piognathism is not only the cause of poor speech and masticatory function but also serious psychic suffering. A case of mandibular prognathisrn is successfully treated with a vertical osteotomy of the mandibular ramus. It brought great improvement in their function and personality postoperatively.

口腔 脂肪腫의 一例

尹仲鎬(Jung Ho yoon),金命來(Myung Rae KIm),李義雄(Eui Wung Lee),李年鍾(Nyoun Jong Lee) 대한치과의사협회 1975 대한치과의사협회지 Vol.13 No.4

下顎孔 傳達麻醉時 麻醉領域에 對한 硏究

尹仲鎬(Jung Ho Yoon),李義雄(Eui Woong Lee),金命來(Myung Rae Kim) 대한치과의사협회 1976 대한치과의사협회지 Vol.14 No.4

開咬症을 隨伴한 下顎前突症 外科的 治驗例

Jung Ho Yoon(尹仲鎬),Hyung Sik Park(朴亨植),Young Soo Kim(金榮洙),Eui Wung Lee(李義雄),Hyoung Gon Kim(金亨坤),Ji Ho Kim(金知浩),Jyung Kyun Kim(金正均) 대한구강악안면외과학회 1981 대한구강악안면외과학회지 Vol.7 No.1

This is a case report of mandibular prognathism with anterior open bite by intraoral Obwegeser-Dalpont s Sagittal split osteotomies in the rami with genioplasty. We suspected this facio-dental deformity to be caused by developmental hypertrophy of mandible, proper selection of operative method was determined by depending upon preoperative work-ups such as radiographic survey, study model analysis and model surgery, cephalometric analysis and gross evaluation of facio-dental deformities. After surgical correction, Improvement of esthetic and functional problem has been obtained and maintained satisfactorily without any complications.

광산사고로 인한 악안면 손상의 기전 및 1차처치에 관한 고찰

윤중호(Jung Ho Yoon),유재하(Jae Ha Yoo),오성섭(Seong Seob Oh) 대한구강악안면외과학회 1987 대한구강악안면외과학회지 Vol.13 No.2

This is a practical & retrospective study on the maxillofacial injuries occurring in mines. The study was based on a series of 74 patients with maxillofacial injuries of miners which had been treated at Wonju Christian Hospital from 1982 to 1986 after the reviewing of mechanism of experimental maxillofacial injures & examination about injury factors in miners. The results obtained were as follows; 1. The most common cause was the abrupt falling down of variable minerals (37%). And minecar accidents (22%), machine work errors (19%) & explosion accidents (18%) were next in orders. 2. The frequency was increased every year. There were most occurred in 1985 during 5 years & November was the highest incidence during a year. 3. The most common type of soft tissue injuries was multiple lacerations (40%), tatooing & foreign body (27%), avulsion (26%) were next in orders. Primary care methods were primary closure (51%), Brushing or Dermabrasion (29%) & S.T.S.G. (14%). 4. The most common location of facial bone fracture was mandible (49%), especially parasymphysis. And LeFort Ⅱ fx was noted 13 cases (17%) because of impact in broad area of face. 5. The types of facial bone fracture were compound fx (39%), simple fx (35%) & comminuted fx (26%) in orders. The primary care methods were closed reduction (29%), open reduction (55%) & immediate emergency operation (16%) in orders. 6. The most common time relapse in arrival at E-R of Wonju Christian Hospital was three to twelve hours (43%) after accident in mines. There were complications in patients which arrived beyond three days after accident. 7. The good prognosis was resulted from immediate bone graft, split-thickness skin graft & microneurosurgery in patients which arrived in 12 hours after accident. 8. The seven patients (8%) had the chronic occupational diseases, such as, pneumoconiosis & pulmonary tuberculosis that prevented wound healing. 9. The other combined injury sites with maxillofacial injury were head (26%), nose (19%), eye (15%), neck (10%), lower extremities (10%) & upper extremities (8%) in orders. 10. The authors would like to propose the improvement of working environment & safe facilities, skillful working techniques & rapid transfer system on industrial accident.

Traumatic cyst 2예

윤중호(Jung Ho Yoon),조문건(Moon Keun Cho) 대한구강악안면외과학회 1987 대한구강악안면외과학회지 Vol.13 No.1

This is a report of two unusual clinical cases of traumatic cyst and following points were the summary of our experience. 1. One case was 20-yr-old male patient who showed multiple cystic lesion on Rt. ascending ramus and Rt. body of the mandible & one case was 14-yr-old girl who showed a cystic lesion on symphysis of the mandible. 2. There was no history of trauma in both cases as an etiologic factor. One case showed mild swelling & pain on Rt. buccal cheek and one case was discovered during routine dental radiographic taking. 3. Definite diagnosis of traumatic cyst could be established with surgical exploration. 4. Postoperative course showed normal healing process & increased bony trabecular patterns.