Application of computer-aided design in immediate repair of mandibular defects

WANG Qiu-xu; LIN Shen; YU Hai-yang; LIU Wei-xian

doi:10.3969/j.issn.1673-7040.2017.12.013

Abstract：Objective To summarize the data and experience of computer-aided design and manufacturing technology (CAD/CAM) in repairment of mandibular defects.Methods Six patients admitted to the oral and maxillofacial surgery ward of Shengjing Hospital from 2015 to the present were selected.The CAD/CAM technology was utilized in the preoperative plan,simulation,and material prefabrication.From 2010 to 2014,16 patients with maxillofacial soft and hard tissue defect who underwent the free vascularized muscle cutaneous bone flap surgery (17 operations) were selected as the control group.The patients' medical records and images were collected.The length of hospital stay,preoperative preparation,and duration of operation were also taken into account.All data were analyzed by SPSS 19.0 software.Finally,a representative case was selected to make an introduction.Results Through the statistical analysis of the cases' data,the average duration of preoperative preparation in experimental group and control group was (7.83 ± 1.94) and (8.00 ± 4.43) days,respectively (P＞0.05).The average length of hospital stay in the experimental and control groups was (19.20 ± 1.30) and (23.00 ± 9.74) days,respectively (P＞0.05).No significant differences were found between the two groups.The above results indicated that our new technology did not extend the preoperative preparation duration or hospital stay length.Conclusion The (CAD/CAM) can be utilized in personalized component making in routine preoperative preparation.No delay occurred in the operations.This method reduced the intraoperative steps,simplified the process,and shortened the operation duration.In the absence of severe complications,the application of new technology has no significant impact on the treatment cycle.