Clinical observation on application of CAD/CAM technique in orbital reconstruction

Abstract

AIM:To evaluate the clinical application of CAD/CAM(computer-aided design/computer-aided manufacturing)technique in orbital reconstruction. METHODS:Thirty-three patients(33 eyes)were included who were admitted and accepted orbital reconstructionin operation in our hospital from June 2011 and October 2015. The three-dimensional(3D)model was made by CAD/CAM technology, according to the orbital three-dimensional CT examination for each patient preoperatively, and the repairing materials were shaped under 3D entity model in operation. The patients were followed up for 3-12mo, and the orbital shape, enophthalmos, diplopia and eye movement were observed. RESULTS:Among the 33 cases(33 eyes), except that 1 case required to remove the implants postoperative because of overcorrection, the patients were satisfied with the orbital shape. Enophthalmos were corrected. The effective rate was 97%. Among 19 cases(19 eyes)with diplopia and eye movement disorders, symptoms in 16 cases(16 eyes)were disappeared or improved, the efficiency rate was 84%. There were no operative complications. CONCLUSION:The CAD/CAM technique is effective and practical in the reconstruction of orbital deformity with shorter operation time, higher efficacy, better outcomes and lower risk, and it is worth to be popularized in clinical application. But the fabrication of 3D model costs certain money which may bring economic pressures to poor patients.

Keywords

• computer-aided design/computer-aided manufacturing
• orbital reconstruction
• head model