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만기 잔존된 제 2 유구치 발거에 의한 제 2 소구치의 자발적 맹출 유도
이근혜,남동우,김현정,김영진,남순현,Lee, Keun-Hye,Nam, Dong-Woo,Kim, Hyun-Jung,Kim, Young-Jin,Nam, Soon-Hyeun 대한소아치과학회 2003 大韓小兒齒科學會誌 Vol.30 No.3
매복은 임상적 또는 방사선학적으로 인식할 만한 맹출로의 장애물이나 잘못된 치배의 위치로 인하여 치아의 맹출에 진전이 없는 것을 말한다. 제 3 대구치와 상악 견치를 제외하고 제 2 소구치에서 가장 흔히 매복이 발생하며, 소구치의 매복은 전체 매복의 0.5%를 차지한다. 소구치 매복의 치료에는 교정적 견인과 외과적 재위치가 필요할 수도 있지만, 만기 잔존된 유구치에 의해 발생한 소구치 매복은 유구치의 발거 및 공간 유지로서 소구치의 맹출을 유도할 수 있다. 본 증례는 제 2 소구치의 미맹출을 주소로 경북대학교병원 소아치과에 내원한 환아에서 만기 잔존된 제 2 유구치를 발거하고 공간 유지를 하여 제 2 소구치의 자발적 맹출을 시도하였는 바 다음과 같은 결과를 얻을 수 있었다. 1. 만기 잔존된 제 2 유구치와 연관된 매복된 제 2 소구치는 유치 발거를 통한 최소한의 치료로 양호한 결과를 얻을 수 있다. 2. 제 2 소구치가 맹출할 때까지 적절한 공간 유지와 정기적인 방사선 검사가 필요하다. 3. 교정적 견인 또는 외과적 재위치를 시도하기 전 치아의 이동을 확인하기 위한 충분한 시간이 허용되어야 한다. 4. 치근이 미완성된 치아에서 좀 더 성공적인 결과를 얻을 수 있다. Impaction is defined as the cessation of the eruption of the tooth caused by a clinically or radiographically detectable physical barrier in the eruption path or by the ectopic position of tooth germ. Besides the third molars and the maxillary canines, the most common impacted tooth is the second premolar. The overall frequency of premolar impaction has been reported to be 0.5%. In some cases, orthodontic traction and surgical repositioning may be indicated. When impacted second premolar is involved with prolonged retained second primary molar, extraction of primary molar and space maintenance lead to eruption of second premolar. In these cases, all patients visited to department of pediatric dentistry of Kyungpook National University Hospital for the chief complaint of unerupted second premolar. Extraction of prolonged retained second primary molar and space management are tried for spontaneous eruption of impacted second premolar tooth. The results were as follows: 1. When impacted second premolar is involved with prolonged retained second primary molar, minimal treatment via elimination of primary molar leads to successful results. 2. Proper space management and periodic radiographic examination are required before eruption of second premolar. 3. Sufficient time must be allowed for confirm of tooth movement before orthodontic traction or surgical repositioning. 4. The result is more successful in incomplete root development.
이근혜(Keun-Hye Lee) 산업기술교육훈련학회 2009 산업기술연구논문지 (JITR) Vol.14 No.4
In this research, we implement parallel programs under parallel computing environment using mobile agents which are models to utilize idle hardware based on the internet connection. We measured the execution time of the programs and analyze the performance with C and JAVA in different operating systems. We concluded that mobile agent programming models are very useful to calculate large amount of computing.
이근혜(Keun-hye, Lee) 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.3
The purpose of this study was to survey a preference to the esthetic profile between Korean women and Korean American women. The interviewee were consisted of 30 Korean women and 30 Korean American women respectively. The survey has been done by using questionnaire. Altered facial profile of each normal male and female was got by moving maxilla, mandible to the front and back to survey the preference among the various profile. Then results were analyzed by SPSS program. The results were as follows, 1. In Korean women, in choosing the men’s profile, 9 people out of 30, picked the standard profile as a most preferred profile, and bimaxillary retrusion and bimaxillary protrusion profile were followed by 6 people and 5people respectively. 2. In Korean American women, in choosing the men’s profile, the 18 people out of 30, pick the bimaxillary retruded profile as a most preferred profile, and the standard profile were followed. 3. In Korean women, in choosing the women’s profile, 18 people out of 30, picked the bimaxillary retruded profile as a most beautiful profile, and standard profile were followed by having 10people’s voting. 4. In Korean American women, in choosing the women’s profile, the 14 people out of 30, chose the bimaxillary retruded profile as a best one and the standard profile were followed by 12 people’s voting. The preference of men’s profile was significantly different between two groups (p<0.05) but the both group picked the bimaxillary retruded profile as a most beautiful when they choose the women’s profile and then there was no statistical difference between the groups.