Application of 3D surgical design in the treatment of facial deformities
SHI Yu-lin
BAI Shi-zhu
ZHAO Jin-long
LIU Yan-pu
SHANG Hong-tao
Abstract：Objective To explore the efficacy and direction of improvement of 3D surgical design in the treatment of facial micro-maxillary slant deformity.Methods All cranial CT data of patients was entered into Mimics and ProPlan CMF software in DICOM format.Three-dimensional reconstruction of skull,registration and replacement of dentition,calibration of standard head position,3D coordinate measurement of surgical landmark and virtual osteotomy were performed.Three-dimensional spatial movement of the jaw was performed based on the 3D coordinates of surgical landmarks.Through the upper and lower,left and right,anterior and posterior translation of the supermaxilla and mandible,coronal plane roll (Yaw),sagittal roll pitch (Pitch),and the rotation of horizontal deflection (Roll),the facial midline and (occlusal) plane was straightened,the (occlusion) relationship was corrected and reconstructed.Mirror observation was conducted to coordinate the facial contour and calculate the amount and scope of bone loss during the surgery.The operation guide plate was printed through 3D technology and the preoperative 3D surgical design was transferred to the operative practice.Whole cranial CT scan was taken postoperatively.Errors were detected by CT registration pre-and postoperative.Results In the actual operation,the 3D surgical guide fit well with the dentition.The moving position of the jaw was identified through a plywood model.High coincidence of the jaw bone existed between the preoperative surgical design and the postoperative CT,and no statistically significant errors were detected.There was a certain discrepancy between the prediction and reality of the facial contour.Conclusion The application of 3D surgical design can maximize and visualize the correction of deformities of the micro-maxillaria.It can shorten operation time and enhance operation accuracy.We predict this method as a future direction for treatment of facial skeletal deformities.
Keywords：Partial jaw deformity3D surgeryComputer-aided design
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 457-460 )