S325: Sinus Floor Augmentation With Simultaneous Implant Placement in the Severely Atrophic Posterior Maxilla

Abstract

One-stage maxillary sinus grafting and implant placement has been traditionally limited to patients with at least 4-5 mm of residual bone to ensure that the implant is completely stabilized. This is considered to be one of the most crucial factors for primary implant stability, parallelism, and subsequently osseointegration. Improved initial implant stability provided by new surgical techniques and roughened implant surfaces has led some clinicians to advocate extending this treatment option to patients with <3 mm of residual bone height, despite the lack of long-term data on the survival of such implants. The aim of this presentation is to review the surgical technique and to determine the long-term survival rates of implants with roughened surfaces immediately placed into maxillary sinus grafts in patients with 1-5 mm of residual bone.Initial implant stability and parallelism was achieved by meticulous condensation of the particulate bone graft material around the implants, and was augmented by the frictional interface between the roughened implant surfaces and the host tissues and selection of an appropriate graft material.Simultaneous implant placement into sinus floor grafts can be performed in patients with at least 1-2 mm of vertical residual bone height when careful case planning and surgical techniques are used. One-stage maxillary sinus grafting and implant placement has been traditionally limited to patients with at least 4-5 mm of residual bone to ensure that the implant is completely stabilized. This is considered to be one of the most crucial factors for primary implant stability, parallelism, and subsequently osseointegration. Improved initial implant stability provided by new surgical techniques and roughened implant surfaces has led some clinicians to advocate extending this treatment option to patients with <3 mm of residual bone height, despite the lack of long-term data on the survival of such implants. The aim of this presentation is to review the surgical technique and to determine the long-term survival rates of implants with roughened surfaces immediately placed into maxillary sinus grafts in patients with 1-5 mm of residual bone. Initial implant stability and parallelism was achieved by meticulous condensation of the particulate bone graft material around the implants, and was augmented by the frictional interface between the roughened implant surfaces and the host tissues and selection of an appropriate graft material. Simultaneous implant placement into sinus floor grafts can be performed in patients with at least 1-2 mm of vertical residual bone height when careful case planning and surgical techniques are used.