Crestal sinus lift

  • Bone putty maxresorb® inject
Sinus lift (also termed sinus floor augmentation) is a surgical technique that aims to thicken (augmentation) an atrophic sinus floor. The crestal sinus lift (internal sinus lift) is a minimally invasive procedure, similar to that of a normal implant placement. The implant bed is carefully prepared without drilling through the residual bony wall of the sinus cavity. Subsequently, the remaining bone lamella is moved cranially using osteotomes; the sinus mucosa is thus elevated. The resulting space may then be filled with a bone graft material that is inserted during the osteotomy. To this purpose, easy-to-apply bone putty maxresorb® inject is an ideal choice.
Internal Sinus lift - Dr. Frank Kistler

Endodontically treated tooth 26 with apical cyst formation

Schneiderian membrane protection

Following elevation of the sinus mucosa through the osteotomy, the insertion of a collagen sponge (collacone® or Jason® fleece) prevents the direct contact of the bone graft particles with the Schneiderian membrane, thus minimizing any perforation risk.

Application of maxresorb® inject

The main component of maxresorb® inject is a water-based nano hydroxyapatite (HA) gel. While the hydrated gel determines the moldability of the material, the embedded beta-TCP/HA granules ensure the stability for a predictable osseous regeneration. The paste is ready to use and can either be applied directly through the syringe nozzle or with a spatula.

Particulate material, such as cerabone®, maxresorb®, or maxgraft® granules, may also be used. When working with granules, prior to insertion of collacone® into the osteotomy site may help avoid perforation of the Schneiderian membrane. collacone® can also be inserted to close the osteotomy site in the case of a later implantation.

In a typical crestal sinus lift procedure, the implant is inserted simultaneously with the bone graft; however, the crestal sinus lift may also be performed immediately after extraction of a maxillary posterior tooth. In this case, following augmentation, the socket is sealed, and the implant placed after the required healing time.

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