Natural Head Postures of XXXX With @entity7439 in Frontal View Are Corrected After Orthognathic Surgeries.

@entity1 @entity135 @entity7439
PURPOSE: Although orthognathic surgeries focus on adjustment of @entity7439 ( @entity7439 ), many clinicians know by experience that the @entity135 ( @entity135 ) also is corrected after the surgery. The authors examined whether this was indeed the case by the measuring the @entity135 during the course of orthognathic treatment. Factors associated with @entity135 correction also were evaluated. @entity1 AND METHODS: In this retrospective study, clinical features, including the @entity135 , of @entity1 with @entity7439 and those with facial symmetry (FS) were compared. They were outpatients of a private orthodontic dental clinic from December 2008 to March 2012. The degree of @entity135 tilt was evaluated using an interpupillary (IP) horizontal angle. The @entity135 of @entity1 with @entity7439 were analyzed further before presurgical orthodontic treatment, after presurgical orthodontic treatment, after orthognathic surgery and postsurgical orthodontic treatment, and 1  year after completion of postsurgical orthodontic treatment. The @entity135 difference at each time point was analyzed using 1-way analysis of variance. An analysis of factors that influence @entity135 tilt correction was performed by linear regression. RESULTS: Thirty-one @entity1 with @entity7439 and 27 with FS were evaluated. The @entity135 tilt was more profound in the @entity7439 group compared with the FS group. There were more @entity1 with skeletal Class III in the @entity7439 group. The degree of @entity135 tilt in the @entity7439 group was decreased after orthognathic surgery and postsurgical orthodontic treatment and remained when measured 1  year later. @entity1 were less prone than @entity1 to @entity135 tilt correction by orthognathic surgery. CONCLUSION: @entity1 with @entity7439 have a tilted @entity135 compared with those with FS. Orthognathic surgery for @entity7439 might correct a tilted @entity135 to a lesser degree in @entity1 .
