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This study investigated changes in the roughness parameters (Sa in μm(2) and Ra in μm) of yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) and large-grit sandblasted acid-etched (SLA) titanium (TI) materials after decontamination by erbium chromium-doped:yttrium, scandium, gallium, and garnet (Er,Cr:YSGG) laser irradiation. Twenty disks were analyzed in this study: 10 disks of Y-TZP (5 mm in diameter and 3 mm in height), standardized with CAD-CAM procedures, and 10 disks of SLA TI (5 mm in diameter and 4 mm in thickness). Disks were randomized into four groups (n = 5), according to whether laser irradiation was performed: Y-TZP&#95;G1 and TI&#95;G1 were not treated by laser (control groups), whereas Y-TZP&#95;G2 and TI&#95;G2 were irradiated with Er,Cr:YSGG laser (1.5 W/20 Hz, air-water cooling proportion of 80%/25%). The surface topography of the disks was analyzed by confocal light microscopy. The mean Sa and Ra values were calculated from five profiles from each group. The results were statistically analyzed by t-test at the 95% confidence level (α = 0.05). For Y-TZP, the Sa results (in mean ± SD) for Y-TZP&#95;G1 and Y-TZP&#95;G2 were 2.60 ± 1.1 and 0.80 ± 0.17 μm(2), respectively, and the Ra results were 2.01 ± 0.71 and 0.18 ± 0.15 μm, respectively (both p < .05). For SLA TI, the Sa results for TI&#95;G1 and TI&#95;G2 were 1.99 ± 0.5 and 3.37 ± 0.75 μm(2), respectively, and the Ra results were 1.78 ± 0.53 and 3.84 ± 0.63 μm, respectively (both p < .05). Er,Cr:YSGG laser irradiation alters the surface roughness of zirconia and SLA TI.

Aim. Alveolar deficiency is considered one of the main limitations for placement of osseointegrated implants, as well as for their long-term success, especially in the anterior region of the maxilla. Objective. To report a clinical case of reconstruction of atrophic maxilla with deproteinized bovine bone associated with platelet-rich fibrin (PRF) and titanium mesh and to assess the linear and volumetric bone gains and rehabilitation with implants in a 5-year follow-up. Case. Patient with bone deficiency in the anterior maxilla region underwent bone reconstruction with deproteinized bovine bone associated with PRF and titanium mesh. After six months, the necessary bone height and volume were obtained for placement of implants, and the bone contour was restored in the anterior region, providing functional and aesthetic improvement. The amount of linear and volumetric bone gains was compared to baseline computed tomography scans. Three implants were placed in the grafted region, and a bone tissue sample was obtained at the time of their placement. Histological analysis showed neo-formed bone tissue in contact with the remaining particles of the biomaterial. After six months, the implants were activated, and the prosthesis was placed on the implants, which were monitored for five years. Conclusion. Implants can be placed predictably in regions with vertical and horizontal bone augmentations by using xenogeneic bone grafts associated with titanium mesh and PRF. [ABSTRACT FROM AUTHOR]