PMID: 30024681Mar 1, 2016Paper

Application of the digital osteotomy template in the mandibular angle osteotomy

Zhonghua zheng xing wai ke za zhi = Zhonghua zhengxing waike zazhi = Chinese journal of plastic surgery
Chao ZhangRan Xu

Abstract

To investigate the application of the digital osteotomy template in the mandibular angle osteotomy,so as to increase the precision and symmetry of the osteotomy. 8 cases were included in our study (female,average age 25.5).The CT data (DICOM format) were reformatted into 3D images using 3D imaging software (ProPlan).The osteotomy lines were designed on digital 3D theoretical model with ProPlan.Then the statistics of the ostectomy were imported into GeoMagic in the form of STL file to design the 3D osteotomy template.The osteotomy template was fabricated with FDA certificated PLA through RP machine. During operation,the template was inserted into operation area to guide the osteotomy.A line was drawn along the edge of ostectomy plate with a grinding ball and osteotomy was done along the curvilinear line using a goose saw. The removed bone proved to be highly matched with the template.All the post-operative results were satisfactory.There were no complications such as fracture,life-threatening hemorrhage and infection.The post-operative measurement showed good symmetry. With the guidance of osteotomy templates,the surgeon can perform the osteotomy in an accurate way.The precision and symmetry of the osteotomy are greatly improved.

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