악골에 발생한 석회화 치성낭의 임상 및 방사선학적 고찰

윤혜림,김기덕,박창서,Yoon Hae-Rym,Kim Kee-Deog,Park Chang-Seo 대한영상치의학회 1996 Imaging Science in Dentistry Vol.26 No.2

Nine cases presented with a calcifying odontogenic cyst to the Dental Hospital of the College of Dentistry, Yonsei University. from January 1987 to September June, 1996, Clinical or histopathological findings were observed according to each radiologic criteria. The results obtained are as follows : 1. The male to female ratio was 2 : 1 with a mean age of 25 years. 2. The radiographic appearences of nine cases were well-defined radiolucent lesions in which eight cases were shown unilocular lesions and only one lesion was seen multilocular lesion. 3. Radiologically. three of nine cases were pure radiolucent lesions and others, six cases were radiolucent contained a variable amount of radiopaque material. 4. Histologically, two cases were classified simple cyst, five were cyst associated odonoma, two were neoplastic type. 5. Histological findings according to the radiological classification, two of three radiolucenct lesions were simple cysts; another was a cyst associated with odontoma. While, four of six radiologic mixed lesions turned out to be a cyst associated with odontoma, two was the neoplastic type.

영상재구성 전산화 단층촬영을 이용한 상악동과 상악동 아래벽 및 주위구조 질환의 방사선학적 평가

윤혜림,김희진,김기덕,박창서,Yoon Hae-Rym,Kim Hee-Jin,Kim Kee-Deog,Park Chang-Seo 대한영상치의학회 2002 Imaging Science in Dentistry Vol.32 No.1

Purpose: To evaluate the degree of accuracy of DentaScan reformatted images of the maxillary sinus and periapical, periodontal lesions and to clarify the usefulness of the reconstructed 3-dimensional images to the dental clinical aspects. Materials and Methods: 33 sides of maxillae of the hemi-sectioned Korean heads were used in this study. Periapical radiographs, computed tomography and DentaScan reformatted cross-sectional images were taken for the radiographic evaluation of the peiapical and peiodontal lesions of the maxillary teeth and inferior wall of maxillary sinus. Results : Compared the degree of accuracy and findings of dental and periapical pathoses on the intraoral radiographs and DentaScan reformatted images with the cross-sectioned specimens, the DentaScan reformatted cross-sectional images were more accurate and more effective than the intraoral radiography with a viewpoint of the detection of dental and periapical pathoses. Conclusion: Comparing the lesions of specimens with intraoral radiographies and DentaScan reformatted images, the dental and periodontal pathoses and topographical structures were more clearly observed in the DentaScan reformatted images, providing the possibility of more applications of reformatted images to clinical dentistry.

한국인 위턱뼈동굴의 형태계측

윤혜림(Hae Rym Yoon),한승호(Seung Ho Han),박창서(Chang Seo Park),김기덕(Ki Deog Kim),강민규(Min Kyu Kang),허경석(Kyung Seok Hu),곽현호(Hyun Ho Kwak),박현도(Hyun Do Park),고기석(Ki Seok Koh),김희진(Hee Jin Kim) 대한체질인류학회 2001 대한체질인류학회지 Vol.14 No.2

연구자들은 한국사람 시신 33쪽(남자 19, 여자 14)의 위턱을 대상으로 CT HiSpeed Advantage 전산화 단층촬영 장치를 이용하여 위턱 치아와 위턱뼈동굴의 DentaScan 프로그램을 이용한 재구성 영상을 얻고 단면영상은 V-worksTM3.0 프로그램으로 재구성하여 위턱뼈와 위턱뼈동굴의 3차원 영상을 만들어 위턱뼈동굴의 앞, 뒤 경계 및 형태계측을 시행하여 다음과 같은 결과를 얻었다. 위턱뼈동굴을 가쪽에서 관찰한 전체적언 형태와 위턱뼈동굴 아래 벽의 모양에 따라 6가지로 분류한 결과, 위턱뼈동굴의 아래 벽이 편평한 유형(18예,54.5%)과 아래 벽이 둥근 유형(7예, 21.2%)이 가장 많았다. 위턱뼈동굴의 앞 경계는 위턱 첫째 작은 어금니 부위에 위치한 경우가 가장 많았고(l4예, 58.4%), 다fms 경우는 송곳니 (8예, 33.3%)와 둘째 작은 어금니(2예, 8.3%)부위에 위치하였다. 위턱뼈동굴의 뒤 경계는 대부분 사랑니 부위와 사랑니 뒤쪽까지 뻗어 있었고 (3l예, 93.9%), 둘째 큰 어금니 부위에 위치하는 경우도 있었다. (2예, 6.1%). 3차원으로 재구성된 영상에서 위턱뼈동굴의 계측을 시행한 결과, 위턱뼈동굴의 최대앞뒤길이는 39.3mm(남자: 40.7mm, 여자: 37.4mm), 최대높이는 37.1mm(남자: 39.4mm, 여자: 34.0mm)였고, 위턱뼈동굴의 최대너비는 32.6mm(남자: 35.3mm, 여자: 28.9mm)로 모든 계측치는 남자가 여자보다 더 큰 경향 이었다. 위턱뼈동굴의 부피는 평균 15.1ml로서 남자는 l8.0ml, 여자는 11.1ml로 남자가 더 컸다.

한국인 위턱뼈동굴 아래벽의 국소해부학적 관계

곽현호(Hyun Ho Kwak),윤혜림(Hae Rym Yoon),허경석(Kyung Seok Hu),강민규(Min Kyu Kang),박현도(Hyun Do Park),고기석(Ki Seok Koh),박창서(Chang Seo Park),김기덕(Ki Deog Kim),김희진(Hee Jin Kim) 대한체질인류학회 2001 해부·생물인류학 (Anat Biol Anthropol) Vol.14 No.2

연구자들은 한국사람 시신 위턱뼈 24쪽의 절단표본을 제작하여 영상분석기 (Image-ProⓡPlus, Ver, 4.0, Media Cybernetics U. S. A.) 상에서 위턱 치아뿌리 끝과 위턱뼈동굴 벽 사이의 최단거리, 위턱뼈동굴 아래 벽 치밀뼈관의 두께, 볼 쪽과 입천장 쪽 이틀 뼈 치밀뼈관에서 치아뿌리까지의 거리 등 모두 21개 항목을 계측하고, 계측 값의 상관분석을 시행하여 다음과 같은 결과를 얻었다. 1. 위턱 첫째 작은 어금니에서 볼 쪽 치아뿌리 및 입천장 쪽 치아뿌리 끝에서 위턱뼈동굴 아래 벽까지 거리의 평균 수치는 각각 5.72mm, 6.27 mm이었으며, 위턱 둘째 작은 어금니의 경우, 치아뿌리에서 동굴아래 벽까지의 거리는 평균 4.82mm였다. 위턱 첫째 큰 어금니의 경우, 안쪽 볼 쪽 치아뿌리, 가쪽볼쪽 치아뿌리 그리고 입천장 쪽 치아뿌리 끝에서 위턱뼈동굴 아래 벽까지의 평균 거리는 각각 3.01mm, 3.53mm, 3.87mm였고, 위턱 둘째 큰 어금니의 경우, 안쪽 볼 쪽 치아뿌리, 먼쪽볼쪽 치아뿌리 그리고 입천장 쪽 치아뿌리 끝에서 위턱뼈동굴 아래 벽까지의 평균 거리는 각각 2.82mm, 2.74mm, 3.40mm였다. 2. 위턱뼈동굴 아래 벽의 치밀뼈관의 두께를 계측한 결과, 볼 쪽 및 입천장 쪽 치아뿌리 부위에서 위턱 첫째 작은 어금니 부위의 위턱뼈동굴 아래 벽 치밀뼈판의 두께가 가장 얇았고, 둘째 작은 어금니 치아뿌리 부위에서 두께가 가장 두꺼운 경향을 보였으며, 뒤쪽의 첫째 큰 어금니, 둘째 큰 어금니 부위로 갈수록 위턱뼈동굴 아래 벽 치멸뼈관의 두께는 다시 얇아지는 양상을 보였다. 3. 절단표본에서 위턱 큰 어금니의 치아뿌리 끝과 위턱뼈동굴 아래 벽 사이의 수직적인 위치관계를 확인한 결과, 위턱 첫째 큰 어금니 중 볼 쪽과 입천장 쪽 치아뿌리 끝을 연결한 선보다 위턱뼈동굴 아래 벽이 위쪽에 위치하는 경우(Type I)가 12예(54.5%)로 가장 많았으며, 위턱 둘째 큰 어금니 부위에서도 볼 쪽과 입천장 쪽 치아 뿌리 끝을 연결한 선보다 위턱뼈동굴 아래 벽이 위쪽에 위치하는 경우(Type I)가 11예(52.4%)로 가장 많았다. 4. 절단 표본에서 위턱 큰 어금니의 치아뿌리 끝과 위턱뼈동굴 아래 벽 사이의 수형적인 위치관계를 3가지 유형으로 분류하였으며, 위턱 첫째 큰 어금니 부위에서 위턱뼈동굴의 가장 아래 부분이 볼 쪽 치아뿌리와 입천장 쪽 치아뿌리 각각의 연장선 사이에 위치하는 경우(Type 2)가 8예 (80%) 있었으며, 위턱 둘째 큰 어금니 부위에서도 위턱뼈동굴이 Type 2인 경우가 8예 (80%)로 대부분이었다.

상악동 아래벽과 상악 대구치 치근사이 위치관계에 관한 방사선학적 연구

박창서,윤혜림 大韓口腔顎顔面 放射線學會 1998 Imaging Science in Dentistry Vol.28 No.1

In this study, radiographic evaluation was made using panoramic radiography and cross-sectional tomography of ?? in male and female adults in their 20's on the relationship between the maxillary sinus floor and the apex of the maxillary molar, to test the accuracy and effectiveness of the cross-sectional tomography, and to use this information in the assessment of preop. and postop. root canal treatment, apical surgery, extraction and implantology. Forty-one adults with an average age of 24.4 years were studied using panoramic radiography and cross-sectional tomography. In panoramic view and cross-sectional view, the position of the apices of maxillary molars were classified as separated, contacted, or protruded type; the general shape of the maxillary sinus floor was evaluated horizontally and vertically from cross-sectional tomography. The accuracy of each radiography was tested using maxilla from 5 fresh cadavers from the Anatomy Lab at Yonsei University Dental College, and panoramic view and cross-sectional tomography were taken in the same condition as with the patients. The results were as follows: 1. Panoramic view and cross-sectional view were taken in the maxilla specimen, and the actual distance between the maxillary sinus floor and the tooth apices were measured in the specimen: the median values of the distance from the tooth apices to the maxillary sinus floor in the panoramic view, cross-sectional view and in the actual maxilla specimen were 2.83mm. 4.51mm, and 4.15mm, respectively. In the cross-sectional view ,the measured distance was close to the actual distance but in the panoramic view, the measured distance was far from the actual distance. 2. When the results of thee panoramic view and cross-sectional view were compared, 40.5% of the results agreed with each other in the two radiographic. Methods and buccal roots of the 2nd molar were the closest to the maxillary sinus floor in the cross-sectional tomography. 3. In cross-sectional view, when the vertical relationship of the maxillary sinus floor and maxillary roots was assessed, in 1st molars type Ⅱ(the sinus floor that extends down to the buccolingual furcation area) was predominant, while in 2nd molars, type I (the sinus floor located above the level connecting the buccal and lingual apices) was predominant. In the horizontal relationship, in 1st molars, type Ⅱ (the lowest floor of the maxillary sinus located in between the buccal and lingual roots) was predominant; in 2nd molars, type I (the lowest floor of the maxillary sinus located on the buccal side of the buccal roots) and type Ⅱ appeared in similar frequency. In conclusion, the ?? cross-sectional tomography was more effective than the frequently used panoramic view, in that the relationship of the maxillary molars and maxillary sinus floor can be evaluated more accurately and the buccolingual cross-sectional view can also be observed. And maxillary sinus floor that was close to maxillary 2nd molar had tendency to be located on buccal side than that close to 1st molar. Therefore, cross-sectional tomography is and effective and accurate method to evaluate the position of the teeth in relation to the sinus floor preoperative and can be easily used to diagnose localized periapical lesions. Also, the image quality obtained was quite satisfactory.

악골에 발생한 석회화 치성낭의 임상 및 방사선학적 고찰

박창서,김기덕,윤혜림 大韓口腔顎顔面放射線學會 1996 Imaging Science in Dentistry Vol.26 No.2

Nine cases presented with a calcifying odontogenic cyst to the Dental Hospital of the College of Dentistry, Yonsei University, from January 1987 to September June, 1996, Clinical or histopathological findings were observed according to each radiologic criteria. The results obtained are as follows: 1. The male to female ratio was 2:1 with a mean age of 25 years. 2. The radiographic appearences of nine cases were well-defined radiolucent lesions in which eight cases were shown unilocular lesions and only one lesion was seen multilocular lesion. 3. Radiologically, three of nine cases were pure radiolucent lesions and others, six cases were radiolucent contained a variable amount of radiopaque material. 4. Histologically, two cases were classified simple cyst, five were cyst associated odonoma, two were neoplastic type. 5. Histlolgical findings according to the radiological classification, two of three radiolucenct lesions were simple cysts; another was a cyst associated with odontoma. While, four of six radiologic mixed lesions turned out to be a cyst associated with odontoma, two was the neoplastic type.