Alternative Applications of Guided Surgery: Precise Outlining of the Lateral Window in Antral Sinus Bone Grafting
Computed tomography (CT) and the application of CT-based guided implant surgery allow clinicians to
provide enhanced precision and accuracy in implant surgery. Because of the difficulty in transferring a
patient’s often complex anatomic sinus configurations, as viewed on a preoperative CT scan, into precise
osteotomy cuts at antral bone graft surgery, a prototype cutting guide was developed. The surgical guide
was developed through the use of CT imaging and the stereolithographic process to precisely position the lateral window, facilitating schneiderian membrane elevation. This report demonstrates the step-by-step method to
perform precise guided sinus window preparation using computer software and a stereolithographically
generated surgical guide.