Correcting severe deep bite in adults is a challenging task - and much more so with removable aligners. This article reports on six patients with severe deep bite, who were all successfully treated with the Invisalign system and the same treatment protocol paying special attention to the important position of the lower canines. Aligners alone are incapable of successfully correcting a deep Curve of Spee - only with auxiliary tools, such as special designed attachments, and the conscious use of overcorrection and staging a correction of a severe deep bite can this be successfully achieved. Keywords: aligner, Curve of Spee, deep bite, Invisalign