J Korean Assoc Maxillofac Plast Reconstr Surg.  2009 Mar;31(2):158-166.

Surgical Stent Fabrication and Clinical Application for Orthognathic Surgery Using Cone-Beam CT

• Kim YI
• Kim JR
• Kim SS
• Son WS
• Park SB

Abstract

The application of CT with basis on 3 dimensional-reconstruction is getting more widely practiced. With the data obtained from cone-beam computed tomography(CBCT), not only the diagnosis of the patient with skeletal abnormality but also the virtual simulation of the orthognathic surgery were performed and its application would be popular in orthodontic field. We reported a case, a 19-year old man who was diagnosed mandibular prognathism and required orthognatic surgery. In this case, the virtual orthognathic surgery was simulated and surgical wafer was fabricated by using CBCT data. That wafer was applied the actual orthognathic surgery. After preoperative orthodontic treatment, we prepared surgery as follows. : (1)Acquisition of 3D image data, (2)Reconstruction of 3-dimensional virtual model, (3)Virtual model surgery, (4)Extraction of stereolithographic image, (5)Check-up for occlusal interference, (6)Fabrication of surgical stent by stereolithography. Bilateral sagittal split ramus osteotomy was operated and used stereolithographic surgical stent. 1 month later, we superimposed CBCT datas of virtual surgery and that of actual surgery, and then compared the result. CT data's application for othognathic surgery yielded satisfactory outcomes.

Keyword

Cone-beam computed tomography; Virtual simulation; Orthognathic surgery

MeSH Terms

Cone-Beam Computed Tomography
Humans
Orthognathic Surgery
Osteotomy, Sagittal Split Ramus
Prognathism
Stents