Efficiency of serial extraction and XXXX cases treated with fixed appliances.

@entity2651 @entity1
INTRODUCTION: Severe crowding can be treated with serial extraction (SE) in the mixed dentition or with @entity2651 ( @entity2651 ) in the permanent dentition. The aim of this study was to investigate the efficiency of orthodontic treatment in SE @entity1 and @entity2651 @entity1 . METHODS: Retrospective chart review identified 51 SE @entity1 and 49 @entity2651 @entity1 treated with fixed appliances. Number of appointments, length of time, and estimated total chair time were determined prior to the placement of fixed appliances and during fixed appliance treatment. Peer assessment rating (PAR) scores were obtained at T1 (start of fixed appliances) and T2 (removal of fixed appliances) for both groups, and at T0 (prior to extraction of the first premolars) for the SE group. RESULTS: The mean T1 PAR score for SE @entity1 was significantly lower than @entity2651 @entity1 (P  <0.001); mean T2 PAR scores were not significantly different (P  = 0.27). Active treatment time (T1 to T2) was significantly (P  <0.001) less for SE @entity1 than @entity2651 @entity1 . Total time (T0 to T2) and total number of appointments were significantly greater for the SE group compared with the LPEgroup (P  <0.001). CONCLUSIONS: SE and LPEresulted in similar final occlusal outcomes. SEs might reduce active treatment time, but significant observation time precedes active treatment.
