Sinus lifts Failure Resulting in Chronic Sinusitis

Insufficient bone quality and quantity in posterior maxilla is a common clinical state, which leads to further prosthetic surgery difficulties. It occurs on account of several causes, most frequently due to the pneumatization of sinus subsequent to the tooth loss and the concomitant excessive alveolar resorption [1]. Depleted alveolar bone is insufficient to host implants of 10 mm in length and 3-4 mm in diameter, which are minimum requirements to allow bone-demanded bilateral implant placement in posterior maxilla. Therefore, maxillary sinus floor augmentation has to be done to provide the foundation for consequent implantation [2]. The sinus lift procedure is a technique of bone reconstruction of the depleted maxillary sinus floor. It is one of the primary surgical options allowing placement of dental implants in the posterior maxilla. Multiple studies have shown that autogenous bone, allogeneic bone, and xenogenic bone graft materials work well along the sinus floor [3]. The objective of this article is to present a clinical case of bilateral maxillary sinus lift with a year of follow up. Postoperative complications, which presented as a chronic maxillary sinusitis and complete osteograft material failure with nasal discharge and remaining material resorption resulted in oroantral communication on left side. As a result of this processes planned implantation cannot be performed. In a discussion possible causes of complications and options of other methods of teeth prosthetics for this particular patient are discussed.