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- 저자 : 鄭圭林 (검색결과 2 건)
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Bioprogressive Mechanism에 依한 Class Ⅰ 不定咬合의 矯正治驗例
鄭圭林 대한치과교정학회 1980 대한치과교정학회지 Vol.10 No.1
The present paper describes 3 clinical cases in which the orthodontic treatment was effected by the Bioprogressive therapy following the extraction of the upper and lower first premolars. What is most noteworthy in the present treatment is the use of a systems approach to diagnosis and treatment by the application of the visual treatment objective in planning treatment, evaluating anchorage and monitoring results, and the rest being performed routinely by the Bioprogressive mechanism. The result achieved by this method is very favorable and the efficiency of the Bioprogressive therapy is quite satisfactory.
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具仲會,高鎭煥,鄭圭林,李起受 대한치과교정학회 1980 대한치과교정학회지 Vol.10 No.1
The purpose of this study was (1) to determine the prevalence of some causes by which dental occlusion might be affected, (2) to determine the prevalence of malocclusion, and types of molar, vertical incisor and horizontal incisor relationships, and (3) to examine the sex difference in the prevalence ratios, and (4) to determine the between-examiner differences in assessing types of dental occlusion. The material consisted of 1281 males and 811 females, total 2091 persons, aged 17 to 21 years. Two examiners who were graduate students in the orthodontic course, examined independently dental occlusion of the material. Before calculating the statistics, the subjects consisted of 156 males and 164 females, total 320 persons, having any one or more causes suspected to affect dental occlusion, was eliminated. Then the remained subjects, 1124 males and 647 females, total 1771 persons, were assessed. The results were as follows 1. The prevalence of some causes by which dental occlusion might be affected was 15.32 percent. The missing rate of any one or more first molars was 8.85 percent, that of any one or more teeth positioned anterior to the first molar was 3.83 per cent. The prevalence of crossbite of the first molar was 0.48 per cent, that of retained primary teeth was 0.77 percent, and that of orthodontic treatment was 0.43 per cent. 2. The rate of between-examiner difference was 12.53 per cent in assessing the types of molar relationship, 18.86 percent in assessing the types of horizontal incisor relationship, and 26.37 percent in assessing the types of horizontal incisor relationship. 3. There was no sex difference in the prevalence ratios of the types of molar relationship. The prevalence of Class 1 molar relationship was 80.91 percent, that of Class Ⅱ was 5.03, that of Class Ⅱ subdivision was 4.01, percent, that of Class Ⅲ was 5.99 percent and that of Class Ⅲ subdivision was 4.07 percent. 4. In the prevalence of the types of horizontal incisor relationship, there were no sex differences except that of Class Ⅱ division 2. The prevalence of Class 1 horizontal incisor relationship was 73.12 percent, that of Class Ⅱ division 1 was 12.03 percent, that of Class Ⅱ division 2 was 6.58 percent in male and 4.33 percent in female, and that of Class Ⅲ was 9.09 percent. 5. In the prevalence of the types of vertical incisor relationship, there were no sex differences except that of deep bite, The prevalence of open bite was 2.20 per cent, that of edge-to-edge bite was 9.15 percent, that of normal bite was 76.34 percent, and that of deep bite was 14.15 percent in male and 9.12 percent in female. 6. There was no sex difference in the prevalence of malocclusion the prevalence of malocclusion was 82.67 percent and that of normal occlusion was 17.33 percent. 7. There was a tendency that when Class 1 molar relationship changed to Class Ⅱ, incisor relationships were to be larger overjet or upright upper incisors and deep bite, but when that changed to Class Ⅲ molar relationship, these were to be cross bite and openbite.
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