Evaluation of digital 3D simulation model assisted in the precise reconstruction of cranio-orbital deformities

doi:10.19438/j.cjoms.2019.06.006

Abstract

Abstract: PURPOSE: To explore the clinical value of digital 3D simulation model in precise reconstruction of cranio-orbital deformities. METHODS: A retrospective analysis was performed in 44 cases with cranio-orbital malformation from January 2013 to January 2019, 43 had traumatic cranio-orbital deformity and 1 was with congenital cranio-orbital malformation. Among them, patients with deformity were further divided into traditional group and model group. In addition to the traditional group, all patients underwent a thin-slice scan of the skull spiral CT (layer thickness<1.0 mm) preoperatively, the original DICOM image data were collected, and skull three-dimensional data (STL format) were reconstructed by computer digital software. Through rapid prototyping technology and reverse mirror engineering technology, STL data were imported to produce 3D simulation model. The surgical procedure was simulated by using digital software before surgery, and surgical exercises, pre-bending or pre-implantation materials were performed on the model, to guide the surgical approach and anatomical sites were confirmed during operation. The operation time, symmetry and satisfaction were collected postoperatively, the data was statistically processed using SPSS 25.0 software package. RESULTS: All patients were followed up for 3 months to 6 years, no serious complications such as intracranial hematoma, intracranial infection, blindness, cerebral hernia, and olfactory loss were noted, only 1 patient had cerebrospinal fluid rhinorrhea and recovered after conservative treatment. The operation time of the model group was significantly lower than that of the traditional group (P<0.05). The postoperative satisfaction degree and symmetry of the model group were significantly better than the traditional group (P<0.05). CONCLUSIONS: Digital 3D simulation model provides accurate medical information before surgery, improving the efficiency and accuracy of surgery and craniofacial shape of the patients.

Key words: Cranio-orbital deformities, Digital precise reconstruction, Crouzon syndrome

CLC Number:

R782.2

JIANG Can-yang, HUANG Jian-ping, JIANG Yan, SHI Bin, HUANG Li, LIN Li-song. Evaluation of digital 3D simulation model assisted in the precise reconstruction of cranio-orbital deformities[J]. China Journal of Oral and Maxillofacial Surgery, 2019, 17(6): 513-517.

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