Maxillary sinus augmentation is a common method for increasing bone height for insertion of dental implants. In most cases, the graft is manually cut into a roughly appropriate shape by visual estimation during the operation; accordingly, the shape of the graft depends considerably on the experience of the surgeon. We have developed a computer‐aided design/computer‐aided manufacturing (CAD/CAM) technique to generate custom‐made block grafts for sinus augmentation, and a customized cutting guide to precisely position the lateral wall and facilitate membrane elevation, using cone‐beam computed tomography (CBCT).

Custom‐made blocks of hydroxyapatite (HA) were preoperatively cut to the required shape, based on a three‐dimensional (3D) simulation, using CAD/CAM technology. The custom‐made HA blocks were used for sinus augmentation.

Five patients underwent bilateral sinus elevation with custom‐made HA blocks. Six months later, implants were placed. Two years after placement, all implants were in function. No clinical or prosthetic complications were encountered.

We present a CAD/CAM technique for the fabrication of custom‐made block grafts for sinus augmentation.

Copyright © 2012 John Wiley & Sons, Ltd.