渗透刺戟이 子宮運動性에 미치는 影響

崔甲植 대한산부인과학회 1975 Obstetrics & Gynecology Science Vol.18 No.1

파노라마 X선사진을 이용한 치아수 이상에 관한 연구

박상억,최갑식 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

경북대학병원 치과에 내원한 8세에서 27세까지의 환자 6,531명의 파노라마 X선사진에서 제3대구치를 제외한 선천성 결손치, 제3대구치의 선천성 결손, 과잉치의 발생율, 성별분포, 호발부위 및 수에 따른 분포를 조사하여 다음의 결과를 얻었다. 1. 제3대구치를 제외한 선천성 결손치의 발생율은 10.8%였으며, 남성이 44.6%, 여성이 55.4%였다. 하악 제2소구치가 23.2%로 가장 많았으며, 상악 측절치 18.4%, 하악 측절치 18.3%, 상악 제2소구치 15.4%의 순으로 나타났다. 결손치의 수는 1개인 경우가 48%로 가장 많았으며, 2개인 경우가 35.4%, 3개인 경우가 6.6%로 나타났다. 2. 제3대구치 선천성 결손의 발생율은 39.7%였으며, 남성이 48.6%, 여성이 51.4%였고, 상악 60.3%, 하악이 39.7%였다. 결손치의 수는 1개인 경우가 28.7%, 2개인 경우가 37.2%, 3개인 경우가 12.5%, 4개인 경우가 21.6%로 나타났다. 3. 과잉치의 발생율은 4.2%였으며, 남성이 65.7%, 여성이 34.3%였다. 상악 중절치부가 64.8%로 가장 많았으며, 상악 측절치부 13.2%, 상악 제3대구치 후방부 8.7%의 순으로 나타났다. 과잉치의 수는 1개인 경우가 79.9%로 가장 많았고,, 2개인 경우가 18.9%, 3개인 경우가 1.2%로 나타났다. The purpose of this study was to evaluate the prevalence and distribution of tooth number anomaly by means of the analysis of panoramic radiographs in 6.531 patients visited the Dental Infirmary of Kyungpook National University Hospital from January 1983 to May 1992. The results were as follows ; 1. The prevalence of congenitally missing teeth except third molar was revealed to be 10.8%, and there was a higher prevalence in females(44.6%) than in males(55.4%). Mandibular 2nd premolars(23.2%) were absent most frequently, followed by maxillary lateral incisors(18.4%), mandibular lateral incisors(18.3%), and maxillary second premolars(15.4%) in descending order of frequency. As to the number of congenitally missing teeth, the percentage of missing on tooth was 48%, missing two teeth was 35.4%, missing one tooth was 48%, missing two teeth was 35.4%, missing three teeth was 6.6%. 2. The prevalence of congenitally missing third molars was revealed to be 39.7%. There was a higher prevalence in the maxilla(60.3%) than in the mandible(39.7%). Maxillary right 3rd molars(30.6%) were absent most frequently, followed by maxillary left 3rd molar(29.7%), mandibular right 3rd molar(20.2%), mandibular left 3rd molar(19.5%) in descending order of frequency. 3. The prevalence of supernumerary teeth was revealed to be 4.2%, and there was a higher prevalence in males(65.7%) than in females(34.3%). They were found most frequently in maxillary central incisor area(64.8%), followed by maxillary lateral incisor area(13.2%), posterior area of maxillary third molar(8.7%) in descending order of frequency. As to the number of supernumerary teeth ; The percentage of one supernumerary tooth was 79.9%, two supernumerary teeth was 8.9%, three supernumerary teeth was 1.2%.

러시아 경제의 모라토리엄과 전망

金聖訓,崔甲植 건국대학교 사회정책연구소 1998 사회과학연구 Vol.9 No.-

파노라마방사선사진상의 이공에 관한 연구

최갑식,배용철,김동윤,손정익 경북대학교 의학연구소 1999 경북대학교병원의학연구소논문집 Vol.3 No.1

The purpose of this study was to evaluate the position and shape of mental foramen in panoramic radiographs. For this study, panoramic radiographs were obtained from the 200 adults and evaluated the position and shape of mental foramen. According to various positional changes in panoramic radiographs of the patients, the author also obtained panoramic radiographs from the 100 adults and then evaluated the positional and shape changes of mental foramen. The following results were obtained: 1. Shapes of metal foramen were observed elliptical(43.3%), round or oval(42.5%), unidentified(7.5%) and diffuse (6.7%) type in descending order of frequency. 2. Horizontal position of mental foramen were most frequently observed at the 2nd premolar area(54.2%), and area between the 1st premolar and 2nd primolar(43.1%), area between the 2nd premolar and 1st molar(2.7%) in descending order of frequency. 3. Vertical position of mental foramen were most frequently observed at the inferior of apex(88.2%), and at apex (9.7%), overlap with apex(1.9%), superior of apex(0.2%) in descending order of frequency. 4. According to various positional changes in panoramic radiographs of the patients, shape changes of mental foramen were more obviously observed at the forward 10mm and chin down 10。 positioned panoramic radiographs. And changes of horizontal and vertical position were observed in similar to compared with normal positioned panoramic radiographs.

관전압 변화에 따른 방사선사진의 흑화도와 대조도

최갑식 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

The purpose of this study to evaluate the influence on radiographic density and contrast of 7-steps aluminum stepwedge according to kilovoltage changes(65-85 kVp range). And the influence on radiographic interpretation of experimentally produced bony lesions under kVp related radiographic densities is also examined. The following results were obtained. 1. The radiographic density of the aluminum stepwedge is increased with the increase of kVp, and increasing tendency of radiographic density is decreased with the increase of aluminum steps. 2. The range of radiographic contrast reveals 0.09-0.32 at 65-85 kVp range, and difference of radiographic contrast score is decreased with the increase of aluminum steps. 3. There is no influence on radiographic interpretation of experimentally produced bony lesions under the radiographic density range of 0.75-1.49.

관전압 변화에 따른 실험적 골격손부의 방사선사진상의 판독

남혜경,김진수,최갑식 大韓口腔顎顔面 放射線學會 1990 Imaging Science in Dentistry Vol.20 No.2

가격 5마리의 하악에 치근단부위 병소 60례와 해면골내 병소 60례를 다양한 크기의 bur로 형성한 후 관전압을 변화시켜 촬영한 방사선 사진을 육안적으로 판독하고 농도계로 분석하여 다음과 같은 결론을 얻었다. 1. 흑화도가 일정한 경우 65-86kVp 범위내의 관전압 변화는 크기가 같은 골내병소의 판독에 영향을 미치지 않았다(p>0.05). 2. 병소가 2번 bur이하의 작은 크기일 때 1번 bur병소에 대한 2번 bur병소의 판독은 치근단 병소는 80kVp 이상의 관전압에서 판독이 용이하였으며(p<0.05), 해면골내 병소는 75kVp이하의 관전압에서 판독이 용이하였다(p<0.05). 3. 해면골내 한정된 병소는 치밀골을 포함한 병소와 육안적 판독의 차이가 있었으나(p<0.05), 해면골과 치밀골 간의 경계부를 포함한 병소와는 육안적 판독의 차이가 없었다(p<0.05). 4. 농도계로 분석한 결과 육안적 판독점수가 같았던 경우에도 농도계 계측치는 차이가 있었으며, 0.15-1.66mm정도의 aluminum등가치차이가 있어야 육안적으로 병소판독이 가능하였다. The purpose of this experiment was to evaluate radiographic interpretation of various sized 60 periapical and 60 cancellous lesions in 10 mandibular sections of 5 dogs according to kVp(65, 70, 75, 80 and 85kVp). The results were as follows ; The change of kilovoltage within 65kVp-85kVp range did not have influence on the radiographic interpretation of the same-sized bony defects at the constant radiographic density(p<0.05). When the bony defects were less than the size of No. 2 round bur, radiographic interpretation of bony defects prepared with No. 2 round bur was easier than those prepared with No. 1 round bur at 80-85kVp in periapical region (p<0.05). However, in cancellous bone, this radiographic interpretation was easier at 65-75kVp(p<0.05). There were significant differences in the radiographic interpretation between the defects confined only to the cancellous. bone and the defects involved in the compact bone(p<0.05). However there were no significant differences between the defects confined only to the cancellous bone and the defects involved in junctional area of cancellous and compact bone(p<0.05). From the results of densitometric analysis, there was a difference in densitometric measurement at the same radiographic interpretation scores, and aluminum equivalent differences of 0.15-1.66mm thickness were needed for radiographic interpretaion.

하악골 양측에 발생된 백악질섬유종

박미경,최갑식 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

저자들은 양측 하악체부위의 종창을 주소로 경북대학교 병원 치과에 내원한 35세 남자에서 임상·방사선학적 검사와 조직 병리학적 검사를 통해 양측성 백악질섬유종을 진단하고 아래와 같이 사항을 관찰하였다. 1. 임상적으로 하악체 양측부위의 점진적 족창으로 인한 안모병형이 관찰되었다. 2. 방사선학적으로 양측 하악체부위의 각각 방사선불투과성 괴를 가진 방사선투과성의 병소가 관찰되었으며, 협설측 피질골의 비박, 팽윤과 병소에 인접한 치아들의 치조백선 소실과 치근 흡수가 관찰되었다. 3. 조직병리학적으로 섬유아세포 및 백악질아세포들이 조밀하게 분포된 결체 조직으로 구성되었고 내부의 원형 또는 난원형의 호염기성의 백악질양 괴가 다수 산재하였다. The author observed a 35-year-old male patient who came to the Dental Infirmary of Kyungpook National University Hospital who had complained of gradual swelling on both side of the mandible for 15 years. As a result of careful analysis of clinical, radiological and histopathological findings, The authors diagnosed it as comentifying fibroma and obtained the results as follows ; 1. In clinical examination, main clinical symptom was facial deformity due to gradual swelling on both side of the mandible. 2. In radiographic examination, radiolucent lesions with central radiopaque foci were seen on both mandibular body areas bilaterally, and cortical thinning and expansion of the mandibular body were seen buccolingually. And loss of lamina dura and root resortption of adjacent teeth were also seen. In histopathological examination, this lesion was composed of delicate interlacing collagen fibers interspersed by the fibroblasts and cementlblaste And round or oval shaped basophilic masses of cementum-like tissue were observed in the connective tissue.

치조골소실의 평가에 있어서 구내 X선사진과 파노라마 X선사진의 비교

박미경,최갑식 大韓口腔顎顔面 放射線學會 1993 Imaging Science in Dentistry Vol.23 No.2

The purpose of this study was to compare the interpretation results of the panoramic radiographs with those of intraoral radiographs in evaluation of alveolar bone loss. All radiographs were obtained from 100 patients who had visited the Dental Infirmary of Kyungpook National University Hospital for periodontal state evaluation. The results were as follows: The percentages of interpretable sites were 95.9%(94.6% in maxilla, 97.4% in mandible) on the intraoral radiographs, and 90.7%(84.0% in maxilla, 97.3% in mandible) on the panoramic radiographs. The concordance of interpretation scores of marginal bone loss between intraoral and panoramic radiographs was 66.3%(65.6% in maxilla, 66.8% in mandible). And according to the site, the highest concordance was in the distal surface of the mandibular 2nd premolar at 82.0%, and the distal surface of the mandibular 1st premolar(76.8%), the distal surface of the maxillary central incisor(75.8%), the mesial surface of the 2nd premolar(75.0%) in descending order of frequency. According to the interpretation scores of the marginal bone loss, the percentages of concordance between intraoral and panoramic radiographs were the highest on the score 10 at 76.4%, and the lowest on the score 8, 9. And the percentages of concordance were inverse proportional rate from the score 5 to the score 9. Number of the observed sites of the furcation involvement in bitewing and panoramic radiographs were 268 sites, and the percentage of interpretable sites was 92.9% in bitewing radiographs and 86.6% in panoramic radiographs. And the concordance rate of interpretation was 79.5%.

함치성 낭의 임상 방사선학적 연구

이강숙,최갑식 大韓口腔顎顔面 放射線學會 1995 Imaging Science in Dentistry Vol.25 No.2

악골의 매복치아와 관련된 단방성의 치관부 방사선투과상을 나타내는 병소들 중에서 임상적, 방사선학적, 조직병리학적 검사를 통해 함치성 낭으로 진단된 233증례들의 임상, 방사선학적 소견을 분석하여 다음과 같은 결론을 얻었다. 1. 함치성 낭은 10대(38.2%)에서 가장 호발되었으며, 남성(67.4%)에서 더 많았다. 2. 주소는 무통성의 종창(33.9%)에서 가장 많았고, 대부분 외과적으로 치료되었으며 적출술(76.6%) 또는 조대술(23.4%)이 사용되었다. 3. 병소는 중심형(72.5%)이 대부분이었으며, 병소의 크기는 2∼2.9cm인 경우(33.0%)에서 가장 많았다. 4. 병소는 상악에서는 전치부(32.6%), 하악에서는 구치부(22.7%)에서 호발되었으며, 원인치아는 상악 과잉치(34.3%)에서 가장 많았다. 5. 주변 정상 골조직과의 경계는 과골성의 분명한 골경화로 나타난 경우(49.8%)가 가장 많았으며, 병소의 변연형태가 평활한 경우 (73.4%)와 병소 내부의 방사선투과상이 균일한 경우(79.4%)가 대부분이었다. 6. 병소와 관련된 피질골의 비박과 팽융이 대부분의 경우(82.0%)에서 나타났으며, 그 방향은 협측인 경우(64.0%)가 가장 많았다. 7. 병소가 발생한 치아의 전위(41.2%)와 치근발육의 지연(19.3%)이 나타났으며, 원인치아의 백악·법랑 경계부와 치아부착부 사이의 거리는 2mm미만인 경우(79.6%)가 가장 많았다. 8. 병소와 관련된 치아의 치조백선 소실(66.8%), 치근 흡수(33.9%), 치아 전위(31.5%)가 관찰되었으며, 하악관의 전위(46.5%)와 상악동 또는 비강의 전위(72.2%)가 관찰되었다. The purpose of this study was to obtain information on the clinical and radiographic features of the dentigerous cysts in the jaws. For this study, The authors examined and analysed the clinical records and radiographs of 233 patients who had lesions of dentigerous cyst diagnosed by clinical and radiographic or histopathological examinations. And the obtained results were as follows: 1. Dentigerous cysts occurred the most frequently in the 2nd decade(38.2%) and occurred more frequently in males(67.4%) than in females(32.6%). 2. The most common clinical symptom was swelling of the jaw(33.9%), and the lesion were treated by the method of surgical removal. 3. The type of lesions was mainly observed as central type(72.5%), and size of the lesion was most frequently observed 2∼2.9cm in the widest length. 4. The lesions were most frequently observed well-defined outline with hyperostotic border(49.8%), and smooth margin(73.4%), and homogeneous lesional radiolucency(79.4%). 5. Cortical thinning and expansion of the lesions(82.0%) were observed, and their direction were most frequently observed toward buccal side(64.0%). 6. The effect on the causative tooth were observed as tooth displacement(41.2%) and delayed root development(19.3%), and the distance between cemento-enamel junction and lesional wall attachment of the causative tooth was mainly observed as below 2mm(79.6%). 7. The effect on the adjacent tooth were observed as loss of lamina dura(66.8%), root resorption(33.9%), and tooth displacement(31.5%). 8. The effects on the adjacent anatomic structures were observed as displacement of the mandibular canal(46.5%) and maxillary sinus or nasal cavity(72.2%).

치아형태 이상에 관한 방사선학적 연구

최갑식 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.1

The purpose of this study was to evaluate the prevalence and distribution according to the types of tooth shape anomalies in permanent teeth of 6,082 persons by means of analysis of the full mouth periapical radiographs. And the following results were obtained; 1. Among tooth shape anomalies, the highest incidence was observed on dilaceration (20.14%), followed by dens invaginatus(3.02%), peg lateralis(1.48%), taurodontism(0.34%), dens evaginatus(0.33%), talon cusp(0.20%), fusion(0.07%) and gemination(0%) in descending order of frequency. 2. Peg lateralis, dens invaginatus and dilaceration occurred more prevalent in females, and other types of tooth shape anomalies occurred more prevalent in males. 3. Dens evaginatus and taurodontism occurred with bilateral tendency, but other anomalies occured with unilateral tendency. 4. As to the involved teeth, maxillary lateral incisors were the most frequently involved teeth on peg leateralis, dens invaginatus and talon cusp. And the mandibular premolars were the most frequently involved teeth on dens evaginatus, the maxillary first molars were on taurodontism, the maxillary second premolars were on dilaceration, and the mandibular incisors and canines were on fusion.