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Piezosurgery in direct sinus liftingOnly 14 pages are availabe for public view
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Abstract
The purpose of this study was to compare the incidence of sinus membrane perforations during sinus lift procedure using piezosurgery technique compared to conventional surgery using DASK drills and to estimate amount of bone gain (bone height) following sinus floor augmentation using cone beam computed tomography (CBCT). Twelve partially edentulous patients indicated for maxillary sinus floor augmentation followed by delayed implant placement were selected. A total of 16 sinus floor augmentation procedures were carried followed by insertion of 32 dental implants. Surgeries were performed under local anesthesia through lateral window approach. Hypro-Oss was used as a graft material. Sinus floor augmentation and grafting procedure was divided into two equal study groups; eight sinus floor augmentation procedures each, according to the surgical tools used for preparation of the osseous window; group I (piezosurgery group; PSG): in which surgery was carried using piezosurgery and group II (conventional surgery group; CSG): in which surgery was carried out using DASK drills. After 3 months of graft healing and maturation of the graft, a total of thirty two Osstem TS implants of 10, 11.5, and 13 mm length and Ø3.5, Ø 4.0, and Ø 5.0 mm diameter were inserted. The bone height “bone gain” obtained with sinus lift as well as bone density was estimatedusing CBCT. For each patient the healing phase was uneventful. No sinus membrane perforation was observed. No implant was lost. The preoperative alveolar bone height ranged between 2.5 and 6 mm (mean ± SD: 2.8 ± 0.8 mm). The mean final bone gain was 12.4. There was no a statistically significant difference in mean bone height or bone gain as well as mean bone density between the two groups through postoperative intervals. Furthermore, There was no a statistically significant difference in the percentage changes in bone height or bone gain as well as the percentage changes in bone density between the two groups through most postoperative intervals.