Objective To design a new type of digital positioning guide for use in orthognathic surgery and to verify its accuracy in orthognathic surgery.Methods Twenty orthognathic patients were collected as experimental and control groups.A new type of digital positioning guide and traditional double jaw plates were used for orthognathic surgery.CT scans were taken one week after surgery to measure the error value compared to the preoperative design.Independent sample t-tests were used to compare differences between groups.Results The average error of the new type of digital positioning guide was as low as 0.94 mm,with higher surgical accuracy compared to traditional double jaw plates.Its accuracy advantage was mainly in the anterior-posterior and vertical directions,and had better precision in the incisor area and nasal region.Conclusions The newly designed digital positioning guide has significant accuracy advantages compared to traditional double jaw plates.This has important clinical significance for the treatment of maxillofacial deformities and accurate transfer of surgical plans,and can be further promoted in clinical practice.
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