INDIRECT SINUS LIFT

Abstract

The indirect sinus lift is a procedure to lift the augment/regenerate alveolar bone in atrophied residual maxillary posterior alveolar crest . The posterior maxilla is always considered as difficult site for the placement of implant than the mandible due to the presence of various anatomical land mark such as maxillary sinus. The anatomical structure of maxillary sinus often makes every dental implant surgeons a challenge task in placement of endosteal implants in the chronic atrophic maxilla and difficulty in osseointegration and further functional and aesthetic implant supported prosthesis. Various techniques in sinus lifting procedure enables the additional anchorage and stability in implants placed support in maxillary segments in with atrophic ridges and pneumatic sinuses. Lack of sufficient bone height along maxillary sinus poses significant difficulty for placement of implants in edentulous maxillary jaw. Minimally invasive sinus augmentation is an effective solution for this problem. In 1960 Boyne introduced sinus lift through lateral access which was initially used as a pre-prosthetic procedure for removable complete dentures purpose. In 1980 Boyne and James used the bone created by sinus lift procedures to place implants. In pursuit of less invasive techniques , in 1994 Summer’s explained a technique which offers access to sinus floor through residual alveolar crest. Using the elasticity of bone, floor dilatation of sinus was performed to increase the length of implants .