Abstract

For orthodontic treatment of certain malocclusions, Invisalign (Align Technology, Santa Clara, Calif) offers an alternative to fixed appliances. The purpose of this study was to evaluate the treatment outcome of patients treated with Invisalign aligners by using the American Board of Orthodontics Objective Grading System (OGS) for dental casts. The dental cast component of the OGS scores 7 categories for discrepancies from ideal related to tooth alignment and occlusion. Depending on the magnitude of the discrepancy, up to 2 points can be scored in each category; thus the fewer the points scored, the more ideal the result.

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