Accuracy of perioperative mandibular positions in orthognathic surgery

Does Mandible-First Sequencing Increase Maxillary Surgical Accuracy in Bimaxillary Procedures?

“…This will prevent any incorrect seating during the preoperative scan to be transferred to the surgical reposition. If the condyles are seated incorrectly in the preoperative scan, the condyles will reposition into centric relation when the patient is under general anesthesia, thereby, changing the position of the mandible 25 . If the maxilla is positioned against the unoperated mandible, an incorrect seating during the preoperative 15 scan may cause the maxilla to be placed posterior to the planned position 24 .…”

Does a learning curve exist for accuracy in three-dimensional planning for maxillary positioning in bimaxillary orthognathic surgery?

“…If not, new model surgery must be performed using an intraoperative bite registration and the surgery should be delayed or postponed. Borba et al 16 assessed occlusal measurements before and after general anesthesia and the influence of sex and type of deformity on such changes. While in most instances centric occlusion could be adequately reproduced under general anesthesia, significant changes in the vertical direction of the mandible were found in class II patients.…”

How Many Oral and Maxillofacial Surgeons Does It Take to Perform Virtual Orthognathic Surgical Planning?

“…) observed during the perioperative period. 12 However, this seems to be an intrinsic characteristic of the mobility of the mandible, in contrast to the maxilla. Also, no current evidence is available to support whether the sequence of orthognathic surgery (maxilla or mandible first) would have a major influence on the accuracy or precision of the outcomes.…”