• 대한두경부종양학회지
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• 제10권2호
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• pp.128-136
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• 1994

Maxillary cancer is usually detected late, and the majority of patients have advanced($T_3\;or\;T_4$) diseases at the first diagnosis. It invades outside the maxillary antrum, superiorly the orbit, ethmoid sinus and the anterior cranial base, anteriorly the facial skin. If the cancer extends through the posterior antral wall, the pterygoid plates, pterygoid muscles and infratemporal fossa are to be involved that make the conventional maxillectomy impossible to remove all the involved structures in infratemporal fossa completely. So, more extensive surgical apprdoach is necessary. We report surgical experience using infratemporal fossa approach(lateral facial approach) in four cases of maxillary cancer and one case of hard palate cancer which extends through the posterior antral wall and involving pterygoid muscles, pterygoid plates and temporalis muscle.

• 대한치과교정학회지
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• 제22권3호
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• pp.491-507
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• 1992

경북대학교 치과대학에서 두개 안면골 성장에 관한 누년적 연구의 일환으로 남자 26명 여자 21명을 대상으로 평균 연령 8.5세에서 16.5세까지 격년 간격으로 활용한 두부X선 규격사진 235매를 분석하여 이 기간동안 나타난 안면각 부의 성장 변화를 분석하여 다음과 같은 결론을 얻었다. 1. 이 기간동안 두개저에 대하여 하악골이 상악골보다 전방 성장량이 많았다. 2. 하악골은 두개저에 대해 전상방으로 닫히는 방향으로 회전되었다. 3. 전체 하악골 길이(Ar-Gn)에서 뚜렷한 사춘기 급성장을 보였으며 그 시기는 남자 12-14세 여자 10-12세로 신장에서 급성장 시기와 일치하였다. 4. 전체 두개저 길이 (Ba-Na)에서도 사춘기 급성장을 보였고 그 시기는 남자 10-12세 여자는 8-10세로 신장 및 하악골 길이에 비해 2년 정도 빠른 시기에 나타났다. 5. 전${\cdot}$후방 안면 높이(AFH, PFH) 모두에서 최대 성장 시기는 남녀 모두 신장에서 최대 성장 시기와 일치하였다. 6. 남녀별로 각 연령에서 각 계측치의 평균치를 이용하여 전반적 평균 성장 변화도 및 진단용 profilogram을 작성하였다.

• 대한치과교정학회지
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• 제19권1호
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• pp.201-218
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• 1989

This study was focused on the distribution of different facial types of the Class II division I malocclusion groups and skeletal characteristics of the each group and those that anteropsterior relationship of the maxilla and mandible calculated from the analysis of ANB angle and Wits appraisal was quite different from each other, as well. Cephalometric headplates of 140 persons of Class II division 1 malocclusion whose mean age was 11.2 years and 69 persons of normal occlusion whose mean age was 12.2 years were utilize as materials. Measurements were recorded, tabulated and statistically analyzed employing the tracings of the lateral cephalograms, then Class II division 1 malocclusion group was divided into 9 Types according to the angle of SNA and SNB for the anteroposterior relationship of the maxilla and mandible, another 9 Types according to the FH-NPog and SN-MP for the horisontal and vertical relationship, and the other 9 Types according to the ANB and Wits appraisal for intermaxillary relationship as well, with which was based on $Mean{\pm}$ 1SD of those of normal occlusion. The result allowed the following conclusion: 1. $37.1\%$ of population demonstrated maxilla within nounal range and retrognathic mandible to the cranial base, $30\%$ for both maxilla and mandible within normal range, $20\%$ for retrognathic maxilla and mandible and $12.9\%$ of the rest were ananged in Class II division 1 maloccusion groups. 2. Retrognathic mandible and hyperdivergent face accounted for $30.7\%$, mesognathic mandible and neutrodivergent face for $29.3\%$, mesognathic mandible and hyperdivergent face for $16.4\%$, retrognathic mandible and neutrodivergent face for $13.6\%$, mesognathic mandible and hypodivergent face for $10\%$ of population were computed in Class II division 1 malocclusion groups. 3. It was suggested that skeletal Class II malocclusion might be due to anomaly in size and shape of cranial base, underdevelopment of mandible, retropositioning of mandible, underdevelopment of posterior face against anterior face, or any combination of these factors. 4. Population with underdevelopment and / or retropositioning of the mandible showed hyperdivergent tendency of facia profile. 5. The ANB angle and Wits appraisal did not coincide the severity of anteroposterior dysplasia in $35.7\%$ of Class II division 1 malocclusion group each other, and this inconsistency was suggested to be related with mandibular rotation, inclination of cranial base, and anteroposterior position of the maxilla.

• 대한치과교정학회지
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• 제23권4호
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• pp.633-644
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• 1993

There has been so much controversies about the position of upper and lower jaws, and their first permanent molars in normal occlusion and Angle's class $I{\cdot}II{\cdot}III$ malocclusions. So, the purpose of this study is to compare the position of upper and lower jaws, and their first molars in normal occlusion and Angle's class $I{\cdot}II{\cdot}III$ malocclusions by lateral cephalometric analysis. The sample consisted of one hundred and twenty girls(thirty in each group) who had completed growth. The findings of this study were as follows : 1. In class I malocclusion, both maxilla and mandible were slightly posterior position than normal occlusion, but they showed harmonious relationship. 2. In class II malocclusion, the mandible was greatly retruded, and the maxilla was also slightly retruded to the cranial base as compared with normal occlusion. 3. In class III malocclusion, the maxilla was significantly retruded to the cranial base, but no significant difference was found in mandibular position as compared with normal occlusion. 4. The maxillary first molar was located at posterior position in class II malocclusion, and anterior position in class III malocclusion to the cranium, so that the rotation of mandible was influenced by that. 5. The mandibular first molar showed constant relationship to the mandible in all four groups, but different position to the cranial base in direct proportion to the mandibular position. 6. On the treatment planning of class III malocclusion, it seems to be better to promote the mandibular horizontal growth by inhibiting the vertical growth of maxillary molar area, and on the treatment planning of class III malocclusion, it seems to be better to promote the antero-inferior growth of maxilla mi to promote the mandibular vertical growth by inducing the vertical growth of maxillary molar area.

• 대한치과교정학회지
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• 제19권1호
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• pp.123-135
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• 1989

This study was undertaken to investigate the relationship between the depth of antegonial notch and the craniofacial morphology, and to predict the mandibular growth direction & potential in class III malocclusion. The computerized analyses were carried out on longitudinal lateral cephalometric radiographs of 50 children with class III malocclusion, divided into two groups ; 30 deep notch subjects (more than 2.6mm) and 20 shallow notch subjects (less than 1.5mm). The conclusions were as follows: 1. The mandibular growth direction in deep notch group was more vertically directed than in shallow notch group. 2. Deep notch group had shorter anterior & posterior cranial base than shallow notch group. 3. There was not significant difference between deep & shallow notch groups in the amount of mandibular growth during treatment period. 4. Notch depth increased in both deep & shallow notch groups during treatment period.

• 대한치과교정학회지
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• 제9권1호
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• pp.67-84
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• 1979

The author measured the right and left craniofacial skeleton using posteroanterior cephalography of 124 male and 97 female subjects of ages ranging 2-6 years, 7-13 years and adult group on Korean. Statstical parameters were calculated by computer from the data. The results of the study were as follows. 1. In the male and female group of deciduous dentition, the right side measurements were slightly greater than the left side measurements, and generally male measurements were greater than female measurements. 2. In the both sex group of mixed dentition, the right side measurements were greater than the left side measurements, and in comparision of sex, the female recognized more growth, and development than male, especially on the cranial base, lateral maxilla, lower maxilla and dental region. 3. In the permanent dentition group, regardless of sex, the right side measurements were greater than the left side measurements, and in the sex difference, male was conspicuously greater than female on both sides measurements. 4. In the permanent dentition group, the asymmetry of the face was striking than deciduous dentition and mixed dentition group.

• 대한치과교정학회지
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• 제1권1호
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• pp.21-27
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• 1970

저자는 교정학의 진단 및 치료에 응용하기 위하여 한국인 10세 아동 남여 50명과 성인 남녀 106명의 두부측모 X-선사진을 사용하여 $Bj\ddot{o}k$, Downs, Steiner 씨 등의 씨 분석법에 의해 다음과 같은 계측치를 얻었다. (1) 정상교합자 10세 아동 남여 50명과 23세 성인 남녀 106의 표준편차표를 작성하였다. (2) Anterior Cranial Base에 대한 Mandibular Body의 비는 약 1:1.1로 나타났다. (3) T to Po의 비(Holdaway ratio)는 약 4.2:1로 나타났으며 Tweed Triangle은 각각 $32^{\circ},52^{\circ},96^{\circ}$로 나타났다. (4) 한국인은 백인에서 보다 하악신부의 후방위, 즉 하악골 후방위로 나타났으며 동시에 한국인은 백인보다 상하악 전치의 진측경사를 갖인 안모로 나타났다.

• 대한치과교정학회지
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• 제22권1호
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• pp.169-177
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• 1992

This investigation was carried out in order to find out changes in head postures and in craniofacial morphology, in relation to the inclination of cervical column. For this study 85 subjects, consisting 39 males and 49 females, between the ages of 7 to 24 years old were chosen, and following results were observed after analysing the correlation coefficients between each structures. 1. No definite relationships were observed between the inclination of cervical column (CVT/HOR) and the inclination of anterior cranial base (SN/VER) 2. No definite relationships were observed between the inclination of mandibular ramus (RL/HOR) and the inclination of mandibular inclination (MLP/VER). 3. In subjects with anteriorly inclined cervical column, increase in mandibular plane inclinations (ML/VER) were observed. 4. No definite relationships were observed between the inclination of cervical column (CVT/HOR) and changes in palatal plane (NL/VER).

• Journal of Yeungnam Medical Science
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• 제21권2호
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• pp.242-250
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• 2004

In general, the skeletal class III has the characteristics of mandibular overgrowth with a normal maxillary growth or maxillary undergrowth with a normal mandibular growth And clinical and radiographic evaluations of the patient are needed. However, the treatment plan is not dependent on these evaluations alone, because patient's general condition and hope for aesthetics varies. The aim of this report is to consider the treatment of a medically compromised patient with an anterior open bite and skeletal class III, which showed a severe mandibular overgrowth. In 2003, a 17-year-old boy with epilepsy, mental retardation presented at our clinic complaining of concave profile. A clinical examination showed severe mandibular prognathism with an anterior open bite. The radiographic examination revealed a short cranial base, a moderate maxillary overgrowth, severe mandibular overgrowth and skeletal open bite tendency. In 2004, he was verified to have no potential of growth by hand-and-wrist radiographs and an endocrine examination. He completed the preoperative orthodontic treatment and orthognathic surgery (sagittal split ramus osteotomy, genioplasty). He was evaluated on the first visit, the preoperative period and the postoperative period with a clinical and radiographic examination. At the first visit, the patient showed moderate overgrowth of the maxilla, severe overgrowth of the mandible, and a subsequential skeletal open bite. After the preoperative orthodontic treatment (preoperative period), the patient showed the same skeletal problem as before and a decompensated dentition for orthognathic surgery. After orthognathic surgery, his profile had improved, but he had still a skeletal openbite tendency because the maxillary orthognathic surgery was not performed. Severe mandibular prognathism with a maxillary overgrowth and anterior open bite should be treated by bimaxillary orthognathic surgery. However, one-jaw orthognathic surgery on the remaining the skeletal open bite tendency was performed for his medical problem and facial esthetics. This subsequential open bite should be resolved with a postoperative orthodontic treatment.

• 대한치과교정학회지
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• 제24권1호
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• pp.161-180
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• 1994

This study was performed to investigate the midline having the least difference between the right and left structure among the lines that had been used in the submentovertex analysis and secondarily to know the distribution of asymmetry and it's degree existed normal persons and asymmetric patients. The subjects consisted of 40 normal adult patients and 40 asymmetric adult patients. The computerized analyses from submentovertex cepholometric radiograph were carried out. The results were as follows : 1. The right and left difference of the perpendicular bisecting line between right and left foramen spinosum was larger than the other midlines in the anterior area and it was decreased gradually as it progressed posteriorly. Specially the difference of this line was the smallest in the area where there was foramen spinosum. 2. The right and left difference of the perpendicular line through crista gali to the line between right and left foramen spinosum was smaller than the other midlines in the anterior area and it was increased gradually as it progressed posteriorly. 3. The right and left difference of the line between crista gali and anterior process of atlas was constant and smaller than the other midlines. 4. Asymmetry was a common finding in both normal and asymmetry group and left or right dominance of asymmetry was not statistically singnificant. 5. When the analyses were undertaken after submentovertex radiogram was divided into cranial base, upper face and lower face, the more inferior part showed relative asymmetry than the more superior part.