The Potential Influence of Medial Sinus wall Exposure During Lateral Sinus Floor Elevation Procedure on the Blood Supply to the Grafted Material: A Cohort Study

Abstract

Edentulous posterior maxillary ridges tend to present with alveolar bone disuse atrophy as well as sinus pneumatization; the second is characterized by osteoclastic activity below the sinus membrane [1-2]. To enable implant placement and restoration of the posterior maxilla, lateral sinus floor elevation (LSFE) with bone augmentation is commonly used. The surgical approach is derived from anatomical factors, especially the sinus width and the residual alveolar ridge volume. Systematic reviews have claimed implant survival rates greater than 90% following LSFE [3-5]. Lateral maxillary sinus wall antrostomy was first described by Tatum [6] and later modified by Boyne and James [7]. This procedure is challenging, requiring careful presurgical planning. Cones beam computed tomography (CBCT) is recommended as part of the presurgical evaluation [8-9]. The maxillary sinus is Abstract