Fig. 3From: Colorimetric and spectrophotometric measurements of orthodontic thermoplastic aligners exposed to various staining sources and cleaning methodsPhotographs of the aligners after staining and cleansing cycles by either the Invisalign® crystals or the Retainer Brite® tablet combined with the Cordless Sonic Cleaner (a) Invisalign® (b) ClearCorrect® (c) Minor Tooth Movement®Back to article page