Computer assisted navigation for craniofacial fibrous dysplasia contouring: retrospective study in 33 consecutive cases

Abstract

Abstract: PURPOSE : To evaluate the effect of computer assisted navigation system (CANS) in contouring of craniomaxillofacial fibrous dysplasia (CFD). METHODS : Thirty-three patients with craniomaxillofacial fibrous dysplasia were included in this study for surgical contouring from January 2010 to December 2013. The patients were divided into 2 groups based on the treatment METHODS. The experimental group included 17 patients who had preoperative virtual surgery design, and underwent surgery with the help of computer assisted navigation system. The control group included 16 patients who underwent surgery without the help of computer assisted navigation system. Each patient underwent computed tomography scans in craniomaxillofacial region 1 week and 3 months after surgery. We measured the models using Geomagic Qualify software. Quantitative evaluation of the effects in both groups was performed using SAS 6.2 software package for student’s t test. RESULTS : In navigation group, mean variation between operative region and preoperative design was (2.1400±1.2482) mm. With mirror model as reference, mean variation of operative region was (2.1285±1.2957) mm in navigation group, whereas (4.4814±2.1940) mm in non-navigation group, there was significantly difference between the 2 groups. CONCLUSIONS : CANS might be more useful in improving the precision in contouring of craniomaxillofacial fibrous dysplasia than conventional METHODS.

Key words: Computer assisted navigation system, Craniomaxillofacial fibrous dysplasia, Contouring, Quantitative evaluation

CLC Number:

R782.2

XIAO Chao, DAI Jie-wen, ZHANG Wen-bin, WU Jin-yang, SHEN Shun-yao, SHEN Guo-fang. Computer assisted navigation for craniofacial fibrous dysplasia contouring: retrospective study in 33 consecutive cases[J]. China Journal of Oral and Maxillofacial Surgery, 2016, 14(1): 44-50.

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