The results of this case series study suggest that this technique allows for the achievement of a similar result as with conventional size windows, but with a significantly smaller total window area.

The aim of this study was to assess, over a period of 24 months, the clinical and radiographic outcomes in partially edentulous patients receiving bone level tapered (BLT) implants. 33 partially edentulous patients and 50 implants were evaluated. Subjects received single or multiple implants in the posterior maxilla. Clinical and radiographic measurements of vertical bone levels were assessed at surgery, at 3, 6, 12 and 24 months after surgery. The success and survival rates of the implants were also evaluated. Within the 24-month follow-up, only one implant failed (2.0%). Other biological or technical complications were not observed. The mean insertion torque was 34±5.3 Ncm. Bone level changes of 0.35±0.23mm were found between surgery and 12 months after surgery, and 0.03±0.05 mm between 12 months and 24 months after surgery. The overall change from surgery to 24 months after implant placement was 0.38±0.24 mm. Most of the bone loss occurred between surgery and 3 months (0.28±0.19mm; p<0.001), thereafter the loss was minimal and statistically non-significant. BLT implants yielded a high survival and success rate with minimal bone level changes. Within the limitations of this study, bone level tapered implants presented high survival and success rates without mechanical or biological complications after loading and minimal marginal bone. These observations indicate that tapered implants seem to be suitable for different clinical scenarios.

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Statement of Problem. Low scientific evidence is identified in the literature for combining implant placement in fresh extraction sockets with immediate function. Moreover, the few studies available on immediate implants in postextraction sites supporting immediate full-arch rehabilitation clearly lack comprehensive protocols. Purpose. The purpose of this study is to report outcomes of a comprehensive protocol using CAD-CAM technology for surgical planning and fabrication of a surgical template and to demonstrate that immediate function can be easily performed with immediate implants in postextraction sites supporting full-arch rehabilitation. Material and Methods. 14 subjects were consecutively rehabilitated (13 maxillae and 1 mandible) with 99 implants supporting full-arch fixed prostheses followed between 6 and 24 months (mean of 16 months). Outcome measures were prosthesis and implant success, biologic and prosthetic complications, pain, oedema evaluation, and radiographic marginal bone levels at surgery and then at 6, 12, 18, and 24 months. Data were analyzed with descriptive statistics. Results. The overall cumulative implant survival rate at mean follow-up time of 16 months was 97.97%. The average marginal bone loss was 0,9 mm. Conclusions. Within the limitations of this study, the results validate this treatment modality for full-arch rehabilitations with predictable outcomes and high survival rate after 2 years.

Background and Aim Methods and Materials