Figure 1. The occlusal diagrams and intraoral photos. A-C, The C-lingual retractor and D-F, the antero-posterior lingual retractor. A, No posterior orthodontic appliance is in place. B, Pretreatment and C, Post en masse retraction by the C-lingual retractor. D-F, The posterior teeth are splinted buccally and the guide bar and posterior tubes are in place. E, Pretreatment and F, Post en masse retraction by the antero-posterior lingual retractor.
