3D printed simplified guide design for Infra-zygomatic screws

Placement of infra-zygomatic crest screw (IZC) in patients with missing posterior teeth or low set sinus floor often presents as a clinical challenge. The ideal position of the bone screw was identified and pre-planned using CBCT images. The critical factors in placement position like the available bone thickness, proximity of sinus floor and adjacent root structures were evaluated. The 3D printed guide was designed for the precise insertion of the bone screw. A detailed protocol for designing and printing the implant guide along with additional features for accuracy of placement has been elaborated in this article.