매복 상악 중절치의 강제 견인 후 치아길이에 영향을 미치는 요소
Factors Affecting Length of Impacted Maxillary Central Incisors after Surgical-Orthodontic Treatment
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초록
본 연구의 목적은 다중 회귀 분석을 이용하여 상악 매복 중절치를 교정적 견인한 후 치료 결과에 영향을 미치는 요소를 확인하는 것이다. 2005년 1월부터 2015년 12월까지 연세대학교 치과대학병원 소아치과에서 상악 매복 중절치에 버튼 부착 수술을 동반한 교정적 치료를 받은 소아∙청소년 환자 총 83명을 대상으로 환자 정보와 치료 전, 후 방사선학적 정보를 이용하여 연구를 진행하였다. 치료 후 인접한 중절치의 길이에 대한 견인한 중절치의 길이의 비율에 대해 성별, 연령 등 환자 정보의 영향 및 치아 발육 단계, 매복 치아의 높이와 위치, 각도 등 방사선학적 정보의 영향을 다중 회귀 분석을 통하여서 평가하였다. 다중 회귀 분석 결과, stem cell from apical papilla (SCAP)의 높이가 높아질수록 치료 후 치아길이비율은 0.345 단위 증가하였으나(p < 0.01), 성별, 치아 발육 단계, 매복치아와 중심선과의 거리 및 각도, 매복치아의 절단면의 높이는 치료 후 치아길이비율과 통계학적으로 유의미한 차이를 보이지 않았다(p > 0.05). 매복 중절치 교정적 견인 치료 시 견인한 치아의 길이는 초기 SCAP의 높이의 영향을 받으나, 성별, 치아 발육 단계, 중심선과의 각도, 절단면의 높이에 따른 영향은 보이지 않았다.
Abstract
The purpose of this study is to identify the factors affecting the treatment outcome after surgical-orthodontic treatment of the maxillary impacted incisors using multiple regression analysis. The study enrolled 83 patients who had surgical-orthodontic treatment in impacted maxillary central incisor between January 2005 and December 2015. Possible explanatory variables related to the prognosis of impacted incisor were age, gender, tooth developmental stage, height, position and angle of the teeth. The results of multiple regression analysis showed that as the height of the stem cell from apical papilla (SCAP) increased, the tooth length ratio increased by 0.345 units (p < 0.01). There was no statistically significant difference in gender, tooth development stage, distance and angle between the center line and the tooth, and the height of incisal tip of the tooth. In conclusion, the height of the SCAP of the impacted central incisor is factor affecting the tooth length after orthodontic traction.
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