Evaluation of Bolton’s Class II Patients Treated with EXT Premolars with Appropriate Finishes in Orthodontic Treatment

Background and aim: One of the requirements for orthodontic treatment is, making appropriate final occlusion and Finishing correctly. More frequently in Class II patients with maxillary pre molar extraction, to make the final occlusion is impossible, This is due to the disruption of Bolton rate by Extraction maxillary premolars, because the mean mesiodistal width of the premolar tooth is greater than the migration rate of the maxillary first molar tooth from the buccal groove mandibular first molar to the embrasure between the fifth and sixth teeth. For these reasons, to make an appropriate final occlusion, more frequently we need the TIPR (total inter proximal reduction) in mandible. in this study, we examined patients with Class II who were treated with extraction of maxillary first pre molars and its treatment with selective TIPR reached to the appropriate final occlusion, to we’ve got the ultimate good of Bolton is calculated.