안모의 수직고경에 영향을 미치는 교정적 요인에 관한 연구
Evluation of factors influencing the change of vertical dimension of face after orthodontic treatment
최우정, 최종범,
소속 상세정보
최우정 ( ) - 원광대학교 치과대학 교정학교실
최종범 ( ) - 원광대학교 치과대학 교정학교실
KMID : 0361920010310020187
Abstract
The change of the vertical dimension is of fundamental importance to the orthodontist. However, the choice between the two methods of treatment, extraction versus nonextraction, is not clear. It is not verified that the extraction method decreases vertical dimension, or nonextraction methods result in an increase in vertical dimension.
The purpose of this study was to evaluate the changes of vertical dimension of face after the orthodontic treatment with standard edgewise technique, and to compare them in relation to facial types and bicuspid extraction.
The subjects consisted of 165 orthodontic patients (77 of adolescents, 88 of adults), and was divided into vertical nonextraction (VN) group, vertical extraction NE) group, horizontal nonextraction (HN) group, horizontal extraction (HE) group. Pre-and Post-treatment cephalograms were taken with standard method, traced, and digitized for each subject. The comparison of the measurements were statistically executed with Student´s t-test.
The results were as follows
1. The facial height and molar height were increased after orthodontic treatment in the all groups.
2. No significant difference was found in the facial height change between the vertical and horizontal groups. -
3. No significant difference was found in the facial height change between the extraction and nonextraction groups.
4. As the upper molars were extruded in adolescents group and lower molars were extruded in adults group, lower anterior
facial height (LAFH) was increased,
5. None of the pretreatment variables corre ates to the change of lower anterior facial height (LAFH).
키워드
안모;수직고경;발치;비발치;성장;Vertical dimension;Extraction;Non-extraction;Growth
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