Comparison of the use of piezosurgery expander and conventional instruments on primary implant stability

Comparison of the success rate and marginal bone loss of implants placed simultaneously with either bone expansion or ridge splitting in maxillary sites: a prospective non-randomized study

This study was performed to compare the amount of marginal bone loss (MBL) and the success rate of implants placed following maxillary ridge expansion with two surgical techniques. A non-randomized prospective study was designed. The patients underwent either bone expansion or ridge splitting, and simultaneous implant placement. The implants were loaded according to the delayed loading protocol with single crowns. Each study group included 35 implants placed in 31 patients. One year after loading, the implant success rate was 100 % in both groups. The median MBL was 1.00 mm in both groups (interquartile range 0.10 mm in the bone expansion group and 0.30 mm in the ridge splitting group) (no significant difference, P = 0.749). The median MBL around implants placed in sites with D2, D3, and D4 density bone was 1.40 mm, 1.00 mm, and 0.80 mm in the expansion group and 1.50 mm, 1.00 mm, and 0.85 mm in the splitting group, respectively. There was a significant difference in MBL between the different bone density types within both groups (P < 0.001). In conclusion, no significant difference in the amount of MBL or the success rate was observed between implants placed simultaneously with ridge splitting and those placed simultaneously with bone expansion, in the maxilla.

Autogenous Bone and Bioactive Glass around Implants Placed Simultaneously with Ridge Splitting for the Treatment of Horizontal Bony Defects: A Randomised Clinical Trial

Objective

To compare using autogenous bone with or without bioactive glass in ridge splitting of horizontal bone defects combined with simultaneous implant placement.

Materials and Methods

In control group, bone expansion was performed and autogenous bone was used to augment the intercortical bone defect. In study group, autogenous bone was mixed with bioactive glass (1 : 1 in volume). In both groups, the implants were inserted simultaneously with ridge splitting. Six months following implant insertion, bone width and height were evaluated. Statistical analysis utilizing paired Student's t-test was used for comparing results within the same group, whereas independent samples t-test was used for intergroup variables comparison.

Results

The mean bone width and labial and mesiodistal crestal bone height values were increased significantly in both groups from baseline to 6 months postoperatively. Comparing the two groups showed nonstatistical significant difference regarding the labial crestal bone loss, while the ridge width gain values were significantly higher in the study group than in the control group. The mesiodistal bone loss was significantly higher in control group than in study group.

Conclusion

Autogenous bone was mixed with bioactive glass (1 : 1 in volume) to fill intercortical defect created after ridge splitting to decrease peri-implant bone resorption associated with autogenous bone alone. This trial is registered with clinical trial registration: NCT04814160.