The aim of this article is to present alternative possibilities for corrective intervention using corticobasal implants, following the failure of treatment with two stage implant in cases of extensive edentulism, multi-segmented edentulism, and the development of peri-implantitis 1 at the level of these implants. For this purpose, a case was selected involving a patient treated with two stage implants in a multi-segmented manner, in the distal regions of the maxilla and mandible, where the implants were affected after 12 years by peri-implantitis in proportions ranging from 20% to 100% in different areas of bone, with a predominance in the vestibular area. The decision was made to remove the affected two stage implants, as well as the remaining deciduous teeth, with or without periodontal conditions, but whose position on the arch made improperly rehabilitation, both functionally and aesthetically impossible, and made the second rehabilitation with polished corticobasal and compressive implants in immediate loading 2. Function and aesthetics of the gnathological apparatus were restored through definitive fixed metal-ceramic prosthetics on the support of corticobasal and compressive implants within 4 days from the beginning of the treatment, with the result being monitored over a period of 3 years and 3 months, and this evaluation is to continue over time. From a surgical perspective, for secondary rehabilitation with polished corticobasal and compressive implants, strategic positions in the maxillary and mandibular bones were used as follows: the fusion area of the maxillary bone with the sphenoid bone, the nasal cortex, the sinus cortex the lingual cortex distal to the mylohyoid line, and the interforaminal mandible area.34 These areas correspond to methods described in Consensus Number 6 in the IF The Foundation of Knowledge 5. In conclusion, the treatment with corticobasal, compressive polished implants is successful even in the case of a difficult clinical scenario like the one described for this patient 6. The reduced treatment time, along with the absence of the need for sinus lifts or bone grafts, makes it the ideal solution in any situation. The use of corticobasal implants, with fixation in the second/third cortical layer and an immediate loading protocol, should represent the primary solution in treating cases with poor bone representation, and no only as a “Corrective Intervention with Corticobasal® Implants”7. 折りたたむ

For the edentulous patient, dental implant therapy is the accepted treatment to replace one or more missing teeth as implant survival rates are greater than 90%. Unfortunately, surgical removal of dental implants occurs for a variety of reasons. As human studies are limited, this case report provides an opportunity to evaluate the peri-implant characteristics in a dental implant removed from a patient using histology. In our patient, the implant was removed three years after completion of the prosthetic phase due to fracture of the abutment that could not be removed from the implant. Histological examination of the implant revealed mature lamellar bone in direct contact with the implant surface. Histomorphometric evaluation revealed a bone-to-implant contact (BIC) of 73.6%. 折りたたむ

Regeneration of new bone continues to be one of the most significant challenges in implant dentistry to correct osseous deficiencies in preparation for dental implant surgery. The need for effective bone regenerative strategies has fueled the development of many therapeutic methods, including the use of biologics such as bone morphogenetic proteins, bone marrow aspirates, mesenchymal stem cells, and platelet-derived growth factors. One therapeutic strategy that has not been investigated is the use of exogenous growth factors on bone regeneration of the jaws. The goal of this study is to evaluate if a novel exogenous allogeneic multi-growth factor concentrate, AlloSpark-GF has a positive effect on bone regeneration in the grafted mandible using histology and histomorphometry. 折りたたむ