3D Reconstruction of Mandibular Defects using CAD/CAM Designed Zirconia Prosthesis

Abstract

Background: Reconstruction of mandibular defects with autogenous free bone graft is considered the preferred method. However, the optimum reconstruction technique of mandibular defects is still controversial. Objectives: To assess the efficacy and safety of the zirconia individual designed CAD/CAM prosthesis for the mandibular reconstruction. Materials and methods: We used a new method (zirconia prosthesis) for the reconstruction of mandibular defects due to various causes. The study was carried out in the Oral and Maxillofacial Department of Al-Ramadi Teaching Hospital during a period of 62 months from January 2012 to March 2017. Data were collected for each patient regarding the age, gender, site and cause of the defect, investigations, operative technique, complications, outcome, and the duration of the follow-up. Results: Twenty patients, 14 were men and 6 women; the patients’ ages ranged from 19 to 70 years. The majority of the defects were caused by tumors, while, 40% due to congenital or traumatic causes. The success rate of the prosthesis taking was 95%. And in these cases, esthetic and functional outcomes were restored or improved after the reconstruction in all subjects. Conclusion: We described a novel method for mandibular reconstruction with zirconium individual-designed CAD/CAM model. We advise to use this method owing to the high success rate, the less major rate of complications in comparison with other methods, and high rate of functional and esthetic outcome.