Document Type : Original research papers
Authors
1
Faculty of Dentistry, University of Mansoura, Mansoura, Egypt,Removable Prosthodontics, Faculty of Dentistry, Delta University, Belqas, Egypt
2
Faculty of Dentistry, University of Mansoura, Mansoura, Egypt Department of Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
3
Faculty of Dentistry, University of Mansoura, Mansoura, Egypt Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Mansoura, Mansoura, Egypt.
Abstract
Conventional RPD Patients with severely resorbed alveolar ridge always having problems with their conventional dentures that may be related to reduced load bearing capacity of the supporting structures with decreased biting force and poor masticatory action in addition to weakened oral sensory function related to prosthetic coverage The rehabilitation of edentulous posterior maxilla with implant supported prosthesis may be complicated by insufficient bone volume caused by continuous ridge resorption and increased maxillary sinus pneumatization. Bone augmentation of atrophic ridges is a commonly used method to place implants in compromised posterior maxillary ridges. Several techniques have been proposed, such as guided bone regeneration, sinus augmentation, block grafts and distraction osteogenesis before or during placement of the dental implant. Maxillary sinus floor elevation either by trans-alveolar or lateral window approach is considered the gold standard in augmentation of atrophic posterior maxilla where bone can be gained on the expense of the pneumatized sinus. However, the technique is associated with several problems such as increased surgical trauma, postoperative swelling, bleeding, infection and inflammation of maxillary sinus, graft resorption, and tearing or perforation of Schneiderian membrane.
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