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This article presents a case report of transmucosal implant with a convergent collar (PRAMA) inserted in the anterior maxillary esthetic area. The purpose of this study is to evaluate soft and hard tissue after 12 months. One implant was placed in the esthetic area. The implant was immediately loaded with a screwed provisional prosthesis. After 3 months the definitive screwed prosthesis was inserted. The patient was reassessed 12 months post-implant placement, and during the examination, the soft-tissue texture, color, and amount of keratinized tissue was checked. No statistically significant horizontal dimensional changes of the alveolar ridge were observed between each time-point. Mean soft tissue levels significantly improved between base-line and 12 months. The reduced buccal width of the transmucosal component gives more space to the gingival thickness and promotes stability and give a better seal. The use of transmucosal implant creates a shift of the inflammatory cell infiltrate away from the crestal bone level., (Copyright 2020 Biolife Sas. www.biolifesas.org.)

Background. To evaluate the clinical and radiographic outcomes of upper jaws fixed cross-arches prosthesis on 6 implants installed with 3D software planning, flapless guided surgery, and immediate loading. Methods. Healthy patients aged 18 years or older at the time of implant placement, in need to be re-stored with an immediately loaded implant-supported screw-retained cross-arch fixed dental prosthesis in the maxilla were included in the present study and treated using computer-assisted template-guided surgery. In order to be immediately loaded implant sites were prepared and an insertion torque ranging between 35-45 Ncm was applied. A prefabricated screw-retained temporary prosthesis was delivered the day of the surgery. The evaluated outcomes were: implant cumulative survival rate (CSR), prosthe-sis survival, any technical and biologic complications, and peri-implant marginal bone level changes, probing pocket depth (PPD), and bleeding on probing (BOP). Results. Twenty-two patients (16 females and 6 males) with a mean age of 63.4 years received 132 im-plants to support 22 cross-arch screw-retained fixed dental prostheses. At the end of the study, no pa-tients dropped out. Three implants failed in 3 patients resulting in a CSR of 97.77%. No final prosthe-sis failed resulting in a CSR of 100%. No major biological or prosthesis complications were recorded. After an initial mean marginal bone loss of 1.10±0.38 mm, (95% CI 0.95 to 1.25 mm), at 12 months follow-up, slightly marginal bone loss was reported with time, resulting in a mean marginal bone loss of 1.58 ±0.41 mm, (95% CI 1.41 to 1.75 mm), at the 5-year follow-up. At 60 months follow-up mean PPD value was 2.44±0.49 mm, (95% CI 2.24 to 2.64 mm), mean BOP value was 1.34±0.87, (95% CI 0.98 to 1.70 mm). Conclusion. Within the limitations of this study it can be concluded that computer guided surgery and immediate loading on 6 implants seem to represent a viable option for the immediate fix rehabilitations of completely edentulous upper jaws. [ABSTRACT FROM AUTHOR]

There are many different techniques to restore a sufficient bone thickness, in both vertical and horizontal direction, after bone loss due to resorption after extractions or after a long period of edentulism. The aim of the present study is a clinical evaluation of the result obtained using the GBR technique with a e-PTFE titanium reinforced membrane in posterior maxilla (1.4-1.6). A 56-years-old male patient presented an implant lost in zone 1.6 and a mucositis around the implant in zone 1.4; after the latter's removal and ahealing period of 4 months, the large bone defects have been filled with heterologous bovine bone mixed with autologous bone and covered withe-PTFE titanium reinforced membrane fixed to the alveolar ridge. After six months the site was reopened to remove the fixing screws and to place two dental implants (size 4x12) in zone 1.4-1.6; after the osseointegration period of 6 months, the implants were uncovered and two healing-screw were positioned. Despite the exposure of the membrane during the healing period a significative increase in alveolar bone both vertical and horizontal was observed, such as to ensure excellent aesthetic and functional result, showing the success of the procedure. [ABSTRACT FROM AUTHOR]

Purpose. To evaluate the 3-year clinical and radiographic outcomes of partially edentulous patients treated with immediately loaded tilted implants, combined with angulated screw channel (ASC) zirconia abutments. Materials and methods. Any patient requiring an implant-supported fixed dental prosthesis for the rehabilitation of the atrophic posterior maxilla and refusing guided bone reconstruction was considered eligible for this study. Two to three immediately loaded flapless implants, combined with immediately placed ASC abutments were placed for each patients. Six months after implant placement/loading a definitive prosthesis was placed. Outcomes were: prosthesis and implant failures, complications, and peri-implant bone level changes. Outcomes were recorded at implant placement/loading and yearly up to 3-year later. Results. Twenty-three anodized implants and ASC zirconia abutments were placed in 10 consecutive participants (mean age 57.2 years) with severe atrophy of the posterior maxilla, by using computer-guided template-assisted surgery. The mean follow-up period was 38.2 months. No patients dropped out. The prosthesis and implant cumulative survival rate was 100%. No biologic or technical complications were experienced during the entire follow-up. Mean marginal bone levels were 0.29±0.34 mm at implant placement and loading, 0.37±0.32 mm at the 1-year follow-up (difference 0.08±0.11 mm; p=0.002), 0.38±0.33 mm at the 2-year follow-up (difference between the 1- and 2-year follow-up 0.02±0.08 mm; p=0.295), and 0.50±0.42 mm at the 3-year follow-up (difference from implant place-ment 0.22±0.22 mm; p=0.000). Conclusions. Guided surgery and immediate loading of ASC zirconia abutment is an effective and reliable treatment option for the treatment of the partially edentulous posterior atrophic maxilla. Further RCT studies are needed to better understand the gold standard approach in such patients. [ABSTRACT FROM AUTHOR]