모형과 방사선 사진을 이용한 하악 전치 발치 치료의 안정성 평가 - 미국교정학회에서 제시한 방법
Postretention stability after mandibular incisor extractions assessed by cast and radiograph ? The American Board of Orthodontics cast and radiographic evaluation
이진우,
소속 상세정보
이진우 ( Lee Jin-Woo ) - 단국대학교 치과대학 치과교정학교실
KMID : 1004520140300030223
Abstract
Purpose: The purpose of this study was to evaluate the improvement and posttreatment stability of patients treated with
extraction of lower incisors.
Materials and Methods: The total of 20 patients with extracted lower incisors were analyzed by means of diagnostic models and panoramic x-rays at the time of initial, final and after 2 years of retention period of the treatment. Irregularity index, overjet, overbite, tooth size-arch length discrepancy (TSALD), intercanine width, intermolar width and American Board of Orthodontics cast/radiographic evaluation (ABO-CRE) were analyzed. Statistical analysis was performed using Wilcoxon signed-rank test.
Results: After treatment, irregularity index showed significant decrease (P = 0.000). TSALD showed significant increase (P = 0.028). During retention period, irregularity index showed significant increase (P = 0.001). For ABO-CRE, total score showed significant decrease after treatment (P = 0.000) and showed average decreased which was not significant result (P = 0.053).
Conclusion: Through evaluation of stability of extraction of lower incisors by means of diagnostic models and panoramic x-rays, it can be concluded that lower incisor extraction treatment had been stable for 2 years after treatment.
키워드
하악 절치 발치; ABO-CRE; irregularity index
lower incisor extraction; ABO-CRE; irregularity index
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