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Efficacy Of Invisalign Attachments: A Retrospective Study, Theresa Karras

Master's Theses (2009 -)

Objective: To compare the efficacy of Invisalign’s (Align Technology, Inc., Santa Clara, CA) optimized and conventional attachments on rotational and extrusive tooth movements.Materials and Methods: Initial, predicted, and achieved digital dental models from 100 orthodontic patients were exported from Invisalign’s ClinCheck software as stereolithography (STL) files and subsequently imported into the Slicer CMF program (open source, version 4.7.0) for superimpositions on posterior teeth with no planned movement. Rotational and extrusive measurements for both optimized and conventional attachment types were made on 382 teeth from the superimposition of the initial and predicted models (“predicted movement”) and from the superimposed initial and …