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In conclusion, Safescraper is capable of collecting adequate amounts of cortical bone chips from different intraoral sites. The procedure is effective for treating alveolar defects for endosseous implant insertion and provides good healing of small bone defects after grafting with bone chips. The study indicates that Safescraper is a very useful device for in-office bone harvesting procedures in routine peri-implant bone regeneration.

Repeated abutment disconnections 28Clinical Trials in Dentistry 2020;02(1):27-46 sfied with the function and aesthetics of their prosthesis and would undergo the same procedure again. Mean peri-implant marginal bone loss 5 years after loading was 0.11±0.30 mm for the definitive abutment group and 0.48±0.73 mm for the repeated abutment change group (difference = -0.37 [SE=0.14] mm; CI95%: -0.66 to -0.09; P = 0.012), the difference being statistically significant. The height of keratinised mucosa at 5 years post-loading was 2.81±1.46 mm in the definitive abutment group and 2.83±1.84 mm in the repeated abutment change group (difference = -0.02 mm; CI95%: -0.85 to 0.80; P = 0.956), and there were no significant differences in marginal bone loss (difference = 0.00 mm; CI95%: -0.32 to 0.32, P = 0.990) or buccal recession (difference = 0.05 mm, CI95%: -0.43 to 0.54, P = 0.826) at implants having less than 2 mm of keratinised mucosa at loading compared to those having more than 2 mm of keratinised mucosa. CONCLUSIONS.Five-year post-loading data show that at least three repeated abutment disconnections significantly increased bone loss by 0.37 mm when compared to no disconnection, but this difference may not be clinically significant. While it might be advisable to avoid unnecessary abutment disconnection whenever possible, if disconnections are required, no clinically significant side effects may be expected. Immediately non-occlusally loaded dental implants are a viable alternative to conventional loading, and no increased bone loss or buccal recessions were noted even at implants with less than 2 mm of keratinised mucosa.CONFLICT OF INTEREST STATEMENT. This trial was partially funded by Dentsply Sirona, the manufacturer of the implants and other products evaluated in this investigation; however, all data belonged to the authors and by no means did the manufacturer interfere with either the conduct of the trial or the publication of the results, with exception of rejecting a proposal to change the protocol, to allow the use of indexed abutments, after the trial was begun.