Safe Sinus Lift: Use of Acrylic Stone Trimmer to Avoid Sinus Lining Perforation
Iatrogenic injury to the maxillary sinus membrane is a common complication during direct sinus lift procedures. The most common cause is perforation of the Schneiderian membrane using a tungsten-carbide round bur no.6. We propose a safe technique in which an acrylic stone trimmer is used to create a window in the maxillary antrum thereby minimizing the risk of injury to the delicate sinus membrane.
Figure 1. Acrylic stone trimmer. Figure 2. Preparation of the lateral window. Figure 3. Demonstration of the intact membrane. Figure 4. Sinus membrane lifted. Figure 5. Packing the antral cavity with bovine bone graft. Figure 6. Placement of collagen membrane.
Figure 7. Preoperative radiograph. Figure 8. Postoperative radiograph.
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