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• W2975214812 abstract "Background Implantoplasty (IP) is one of the options for the treatment of peri-implantitis. Several methods have been described for removing the threads of the implants and for smoothing and polishing implant surfaces, including rotary instruments and piezoelectric devices. The use of sonic tips has not been reported so far for this application. Aim/Hypothesis To evaluate the efficacy of diamond sonic tips compared to tungsten carbide egg-shaped burs, both in combination with finishing Arkansas burs, in terms of treatment time, surface roughness, weight variations and high resolution morphology. Metal debris morphology and composition were also evaluated. Material and Methods 9 cylindrical 4x13 mm implants with a hybrid surface, characterized by a machined coronal portion and a moderate rough area, were used to evaluate surface wear obtained using two different methods- 1) a sequence of two tungsten carbide egg-shaped burs with decreasing toothing attached to a high-speed handpiece (BUR) + 2) a sequence of two torpedo-shaped Sonic tips attached to an air scaler (SONIC). Both groups were then treated by finishing with Arkansas burs (BUR+A and SONIC+A). The duration of the procedures was recorded. IP was done until a visually cylindrical, smooth, shiny surface was obtained. High resolution surface topography before and after IP was analyzed. Scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDS) were used to investigate surface morphology and elemental composition. Implant weight variations and micro-CT were used to compare implants before and after IPs. Metal debris was evaluated by means of SEM and EDS as well. Results Mean time of 7 min 19s with a standard deviation (SD) of 28s and of 13 min 28s (SD = 53s) was recorded for BUR+A and SONIC+A groups, respectively. BUR Ra (0.67 ± 0.30 μm) was significantly lower than that of the SONIC (1.04 ± 0.21 μm), while no statistically significant differences were found after polishing with Arkansas (Ra 0.51 ± 0.12 μm and Ra 0.58 ± 0.13 μm, respectively). Surface features were confirmed by SEM qualitative analysis. EDS showed residues of diamond particles onto implant surfaces in both SONIC groups (SONIC and SONIC+A). Micro-CT showed a mean volume reduction of the implants after treatment of 10 (± 1)% and 3 (± 1)% for BUR+A and SONIC+A, respectively. Similarly, statistically significant weight differences were found between the two groups after IP. Ti particles produced with sonic tips resulted smaller than those obtained using burs. Moreover, Nickel peak was observed in SONIC in both implant surface and wear particles. Conclusion and Clinical Implications A comparable implant surface was obtained with both treatments. SONIC was found to be more time-consuming and resulted in almost complete destruction of the tips’ diamond coating after two treatments, but it was more conservative in terms of implant modification. Further studies are needed to determine whether IP performed with sonic tips can cause a different mechanical resistance weakening compared to burs, and the role of debris in surrounding soft and hard tissues in vivo." @default.
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• W2975214812 date "2019-09-01" @default.
• W2975214812 modified "2023-10-17" @default.
• W2975214812 title "Implantoplasty‐ tungsten carbide bur versus diamond sonic tip: Preliminary results of an in vitro study" @default.
• W2975214812 doi "https://doi.org/10.1111/clr.102_13509" @default.
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