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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.3
- 수록면
- 196 - 204 (9page)
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초록· 키워드
오류제보하기
To establish the ideal occlusal relationship, the values of tooth size and ratio must be in a normal range.
In this study, the means and standard deviations of Bolton’s anterior ratio and overall ratio using mesiodistal dimensions of teeth measured on diagnostic models of 334 Korean malocclusion patients were calculated and differences in Bolton ratio according to the groups of malocclusion patients were studied. Also the changes that can occur in overall ratio before and after hypothetical tooth extractions were observed.
The results are as follows. 1. The mean anterior ratio of Korean malocclusion patients was 78.0 ± 2.69%, and the mean overall ratio was 91.56 ± 2.28%. 2. The largest value of tooth size ratio could be found in Class Ⅲ group, followed by Class Ⅰ and Class Ⅱ groups in order. However there was no statically significant difference. 3. The values of overall ratio reduced significantly after premolar extractions in all malocclusion groups, which was much more significant in the extraction of upper second premolar and lower first premolar(U5L4) or upper second premolar and lower second premolar(U5L5). 4. The values of overall ratio reduced significantly after premolar extractions in all 3 groups divided based on Bolton ratio, which was much more significant in the extraction of upper second premolar and lower first premolar(U5L4) or upper second premolar and lower second premolar(U5L5).
In this study, the means and standard deviations of Bolton’s anterior ratio and overall ratio using mesiodistal dimensions of teeth measured on diagnostic models of 334 Korean malocclusion patients were calculated and differences in Bolton ratio according to the groups of malocclusion patients were studied. Also the changes that can occur in overall ratio before and after hypothetical tooth extractions were observed.
The results are as follows. 1. The mean anterior ratio of Korean malocclusion patients was 78.0 ± 2.69%, and the mean overall ratio was 91.56 ± 2.28%. 2. The largest value of tooth size ratio could be found in Class Ⅲ group, followed by Class Ⅰ and Class Ⅱ groups in order. However there was no statically significant difference. 3. The values of overall ratio reduced significantly after premolar extractions in all malocclusion groups, which was much more significant in the extraction of upper second premolar and lower first premolar(U5L4) or upper second premolar and lower second premolar(U5L5). 4. The values of overall ratio reduced significantly after premolar extractions in all 3 groups divided based on Bolton ratio, which was much more significant in the extraction of upper second premolar and lower first premolar(U5L4) or upper second premolar and lower second premolar(U5L5).
목차
ABSTRACT
1. 서론
2. 연구대상 및 방법
3. 연구결과
4. 고찰
5. 결론
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UCI(KEPA) : I410-ECN-0101-2013-515-003604745