Progression of XXXX .

@entity2122 @entity1 @entity4802 @entity85 @entity7439
@entity4802 is a common @entity2122 , variably affecting structures derived from the first and second pharyngeal arches. Correction of the @entity85 in @entity1 has been advocated to improve growth potential and reduce @entity85 . However, contrary reports have suggested that @entity7439 does not increase with growth; therefore, skeletal correction can be postponed, even until adolescence. The purpose of this study was to test the hypothesis that @entity7439 is progressive. This is a retrospective evaluation of 67 @entity1 with untreated @entity4802 . The @entity1 were categorized as: group I (mandible type I, IIa), n = 38, and group II (mandible type IIb, III), n = 29. Pretreatment posterior-anterior cephalometric radiographs were used to analyze asymmetry by measuring the angle between the true horizontal and the following planes: piriform rim, maxillary occlusal plane, and intergonial angle. Angular measurements were averaged for @entity1 in the deciduous (<6 years), mixed (> or =6<13 years), and permanent dentition (> or =13 years). In group I, angle piriform rim, maxillary occlusal plane, and intergonial angle increased from 7.0, 4.3, and 4.4 to 8.4, 6.6, and 6.1 degrees, respectively [mean age, 4.1 (deciduous) to 8.6 (mixed) to 21.0 (permanent) years]. In group II, angle piriform rim, maxillary occlusal plane, and intergonial angle increased from 9.5, 6.2, and 5.3 to 11.7, 7.6, and 8.0 degrees, respectively [mean age, 3.4 (deciduous) to 8.0 (mixed) years]. These data demonstrate that @entity4802 is progressive and underscores the importance of early surgical correction of mandibular asymmetry in this disorder.
