Application of surgeon-dominated 3D printed osteotomy guides in the mandibular tumor resection
Objective To presents the application experience of 3D printed osteotomy guides dominated by surgeons and printed by medical device company in mandibular tumor resection surgery.And evaluate the precision of these osteotomy guides and discusses the pros and cons of this approach.Methods A total of 28 patients with benign mandibular tumors treated by the same surgical team at Peking University School and Hospital of Stomatology from January 2021 to June 2023 were selected.Recording the design time of the osteotomy guide,treatment delay time(time from initial diagnosis to curative surgical treatment).Deviations between the postoperative mandibular model within two weeks and preoperative design were recorded to evaluate the osteotomy plane angle and deviations between buccal and lingual side landmarks,and to analyze related influencing factors.Additionally,23 patients with benign mandibular tumors during the same period who did not use surgical guides were selected as the traditional group,of which treatment delay time and the deviation between the condylion points were recorded for comparison with the surgical guide group.Results All of the 28 patients in the surgical guide group underwent tumor resection with the assistance of 3D printed osteotomy guides.The deviations on the buccal side and lingual side of the osteotomy planes were 2.12±1.06 mm and 2.27±1.05 mm,respectively,with an angle deviation of 4.80±4.22°.The precision of the surgical guides was not significantly influenced by the length of the guides or surgical site(P＞0.05).The design time for the surgical guides was 43.9±34.5 hours,and the treatment delay time in the surgical guide group was 25.1±20.7 days.The treatment delay time for the traditional group was 23.0±18.7 days,with no statistically significant difference between the two groups(P＞0.05).The deviation between the condylion points was 1.80±1.30 mm in the surgical guide group and 2.80±1.39 mm in the traditional group,and the difference between two groups was statistically significant(P＜0.05).Conclusion Surgeon-dominated design of surgical guides facilitates reduced preparation time and accurate implementation of preoperative plans.
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