Invisalign and traditional orthodontic treatment postretention outcomes compared using the American Board of Orthodontics Objective Grading System

被引:125
作者
Kuncio, Daniel
Maganzini, Anthony
Shelton, Clarence
Freeman, Katherine
机构
[1] Montefiore Med Ctr, Dept Orthodont, Bronx, NY 10467 USA
[2] Montefiore Med Ctr, Albert Einstein Coll Med, Bronx, NY 10467 USA
[3] Montefiore Med Ctr, Albert Einstein Coll Med, Dept Orthodont, Bronx, NY 10467 USA
[4] Montefiore Med Ctr, Albert Einstein Coll Med, Dept Epidemiol & Populat Hlth, Bronx, NY 10467 USA
关键词
invisalign; cohort study; objective grading system; treatment outcome; relapse; TOOTH MOVEMENT;
D O I
10.2319/100106-398.1
中图分类号
R78 [口腔科学];
学科分类号
100302 [口腔临床医学];
摘要
Objective: To compare the postretention dental changes between patients treated with Invisalign and those treated with conventional fixed appliances. Materials and Methods: This is a comparative cohort study using patient records of one orthodontist in New York City. Two groups of patients were identified that differed only in the method of treatment (Invisalign and Braces group). Dental casts and panoramic radiographs were collected and analyzed using the objective grading system (OGS) of the American Board of Orthodontics (ABO). The cases were evaluated immediately after appliance removal (T1) and at a postretention time (T2), three years after appliance removal. All patients had completed active orthodontic treatment and had undergone at least one year of retention. A Wilcoxon rank sum test was used to evaluate differences in treatment outcomes between the groups for each of the eight categories in the OGS, including four additional subcategories in the alignment category. A Wilcoxon signed rank test was used to determine the significance of changes within each group from T1 to T2. Results: The change in the total alignment score in the Invisalign group was significantly larger than that for the Braces group. There were significant changes in total alignment and mandibular anterior alignment in both groups. There were significant changes in maxillary anterior alignment in the Invisalign group only. Conclusions: In this sample for this period of observation, patients treated with Invisalign relapsed more than those treated with conventional fixed appliances.
引用
收藏
页码:864 / 869
页数:6
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