Figures 1–5. Figure 1. Panoramic X-ray showing the loss of supporting bone tissue at the maxillary right second molar. Figure 2. An oral-antral communication was produced following extraction of the maxillary right second molar. Figure 3. A full-thickness flap was raised to the inferior portion of the infraorbital nerve and lower part of the zygoma to visualize the anterior wall of the maxillary right sinus. A rounded tungsten drill was used to prepare a window measuring approximately 10 mm in length and 8 mm in width in the anterior wall of the maxillary sinus. Figure 4. The zygomatic bone graft was obtained and perforation of the sinus membrane was avoided. Figure 5. The harvested bone was placed within the socket of the maxillary right second molar. The graft was stabilized and the communication was completely sealed.