A Minimally Invasive Sinus Augmentation Technique using a Novel Bone Graft Delivery System

A variety of surgical techniques and materials have been developed to increase the vertical bone height in the posterior maxilla. Minimally invasive crestal approaches for the elevation of the floor of the sinus using a crestal approach have been recently reported to minimize adverse events associated with the use of the osteotome technique for indirect sinus lift. The aim of this study is to report a surgical improvisation that minimizes risks associated with sinus floor elevation using a crestal approach and simplifies the clinical procedure. The technique is based on the use of a viscoelastic calcium phosphosilicate alloplastic putty (CPS putty) bone substitute that can be delivered utilizing a unique cartridge delivery system. CPS putty not only acts as a ‘protective cushion’ thanks to its physical properties, but also provides hydraulic pressure to lift the Schneiderian membrane when used in conjunction with the cartridge system. This approach minimizes risks of benign paroxysmal positional vertigo or mechanical perforations of the Schneiderian membrane associated with the traditional osteotome technique.