Investigation into the prediction accuracy of photocephalometry for skeletal Class III adult female patients treated with two-jaw surgery

摘要: Abstract Background/purpose Surgical predictions for skeletal Class III patients have been reported to be the least accurate. Additionally, female tend focus more on improving their facial esthetics. Therefore, this study was aimed at assessing prediction accuracy of photocephalometry adult treated with two-jaw surgery. Materials and methods A photocephalometric investigation undertaken assess in a sample 16 requiring bimaxillary orthognathic Tracings cephalograms one-to-one predicted photographs were carried out. Selected landmarks digitized user-defined computer program. The profile estimated by evaluating discrepancies landmark positions between post-surgical pre-planning photographs. Results Predictions generally accurate all horizontal variables also upper lip vertical direction. Inaccuracies tended occur direction nasal base lower lip. Mean differences ranged from 1.00–1.06 mm inferior actual position. In lip, place position as superior, mean 1.38 mm (for stomion), 2.38 mm (labrale inferius), 2.06 mm (inferior labial sulcus). Conclusions Compared surgical outcomes, locate superior Prediction inaccuracies large individual variations found report associated difficulties manual photographic manipulation weak correlations hard tissues corresponding soft tissues.