Recently, the Department of head and neck surgery, Tumor Hospital of Gansu Province in the province pioneered the use of computer aided design with 3D printing auxiliary technology, is a 28 year old female patient successfully completed the right mandibular tumor resection and titanium plate internal fixation reconstruction.
Patients before the surgery planning system to generate lesions and healthy contralateral virtual model, uses the healthy side of the mandible with the mirror technology of computer aided design, reconstruction in patients with the normal shape of the mandible, making 1: 1 Rapid Prototyping and actual hard tissue consistent physical model and preoperative design osteotomy area, with reference to the image model of mandible by 3D printing technology, measurements are required reconstruction titanium plate length and complete the shaping titanium plate, pre bending reconstruction titanium plate, the completely fit on the surface of the model, determine the position of the screw fixation, achieve the desired fit.
The operation is carried out strictly according to the preoperative plan, the operation process is smooth, the operation time is shortened, and the good effect is obtained.
The operation through the computer aided design and 3D printing technology, visual display of the jaw and tumor morphology, to facilitate the operation of the doctor to complete the design.
After the investigation of the patients, the facial morphology, occlusal restoration, joint function and the evaluation of the mouth opening were all achieved good results.