The Experts below are selected from a list of 352740 Experts worldwide ranked by ideXlab platform
Gavriel Chaushu - One of the best experts on this subject based on the ideXlab platform.
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the use of hydroxyapatite bone cement for sinus floor Augmentation with simultaneous implant placement in the atrophic maxilla a report of 10 cases
Journal of Periodontology, 2000Co-Authors: Ziv Mazo, Michael Peleg, Aru Garg, Gavriel ChaushuAbstract:Background: Dental implant placement associated with sinus floor Augmentation in a severely atrophic maxilla can be performed in a 1- or 2-stage surgical procedure, depending on the height of the residual alveolar bone. A minimum of 4 to 5 mm is recommended for a 1-stage procedure. Methods: This clinical study describes the use of hydroxyapatite (HA) bone cement to stabilize HAcoated cylindrical implants placed simultaneously during sinus Augmentation in 10 patients where insufficient bone volume did not allow primary implant stability. A total of 26 HA-coated dental implants were inserted in 10 grafted sinuses of 10 patients. Results: None of the cases presented any difficulty in achieving initial stabilization and parallelism. No clinical complications of the sinuses were evident. Prior to exposure, radiographic evaluation revealed the implants embedded in a densely homogeneous radiopaque mass. At second-stage surgery, there was no clinical evidence of crestal bone loss around the implants. All implants were clinically osseointegrated. All patients received fixed implant-supported prostheses. Mean follow-up was 18 months (range 12 to 24 months). Conclusions: According to this preliminary study, the hydroxyapatite bone cement appears to hold great promise as a grafting alloplastic material for sinus floor Augmentations. Its main advantage is its ability to provide initial stability required for osseointegration and proper implant location and parallelism. Further clinical and histological studies are required before it can be recommended for routine use in sinus lift procedures. J Periodontol 2000;71:1187-1194.
Liran Levin - One of the best experts on this subject based on the ideXlab platform.
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symphysis revisited clinical and histologic evaluation of newly formed bone and reharvesting potential of previously used symphysial donor sites for onlay bone grafting
Journal of Periodontology, 2009Co-Authors: Devorah Schwartzarad, Liran LevinAbstract:Background: This article reports on the reharvesting potential of newly formed bone in previously used symphysial donor sites.Methods: This study included five patients who were scheduled for sequential onlay bone Augmentations prior to dental implant placement using the symphysis area as a donor site. At 5 months after bone Augmentation, computed tomography scans of donor sites revealed healing from the first surgery. Because additional bone Augmentation was required, the same sites were revisited for bone harvesting. Reharvesting was performed 5 months after the first harvesting. A small portion of the harvested bone from two patients was evaluated histologically.Results: Five months postharvesting, clinical observation of the donor sites resembled newly formed bone as a conglomerate of bovine bone particles. In the five patients, bone continuity was observed between new bone at the donor defect sites and surrounding bone. Additional blocks were reharvested from the same sites and successfully grafted t...
Giovanni Zucchelli - One of the best experts on this subject based on the ideXlab platform.
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Soft-tissue Augmentation procedures in edentulous esthetic areas.
Periodontology 2000, 2018Co-Authors: Matteo Marzadori, Martina Stefanini, Claudio Mazzotti, Sabrina Ganz, Praveen Sharma, Giovanni ZucchelliAbstract:Loss of dentition leads to functional and esthetic challenges that are determined by the anatomic features of the edentulous area. These features can complicate the prosthetic rehabilitation of such patients, especially in situations where optimal esthetic outcomes are desired. For these reasons, reconstructive plastic surgery procedures, aimed at restoring the alveolar ridge to its former dimensions, have become of great clinical interest. These reconstructive plastic surgery procedures frequently involve soft-tissue Augmentation, performed to improve the quality and quantity of mucogingival tissue with the aim to achieve an ideal esthetic result. This review will focus on the description and expected outcomes of different surgical techniques for soft-tissue Augmentation in edentulous areas, as described in the literature. Although more information from a larger number of studies and randomized controlled clinical trials is needed, it is possible to draw some conclusions, namely: pouch procedures are the first choice for soft-tissue Augmentation, especially in high-demand esthetic areas; roll techniques are possible in shallow buccolingual soft-tissue Augmentations; and onlay, inlay and combination grafts are less suitable for soft-tissue Augmentation because of their poor esthetic results.
Ziv Mazo - One of the best experts on this subject based on the ideXlab platform.
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the use of hydroxyapatite bone cement for sinus floor Augmentation with simultaneous implant placement in the atrophic maxilla a report of 10 cases
Journal of Periodontology, 2000Co-Authors: Ziv Mazo, Michael Peleg, Aru Garg, Gavriel ChaushuAbstract:Background: Dental implant placement associated with sinus floor Augmentation in a severely atrophic maxilla can be performed in a 1- or 2-stage surgical procedure, depending on the height of the residual alveolar bone. A minimum of 4 to 5 mm is recommended for a 1-stage procedure. Methods: This clinical study describes the use of hydroxyapatite (HA) bone cement to stabilize HAcoated cylindrical implants placed simultaneously during sinus Augmentation in 10 patients where insufficient bone volume did not allow primary implant stability. A total of 26 HA-coated dental implants were inserted in 10 grafted sinuses of 10 patients. Results: None of the cases presented any difficulty in achieving initial stabilization and parallelism. No clinical complications of the sinuses were evident. Prior to exposure, radiographic evaluation revealed the implants embedded in a densely homogeneous radiopaque mass. At second-stage surgery, there was no clinical evidence of crestal bone loss around the implants. All implants were clinically osseointegrated. All patients received fixed implant-supported prostheses. Mean follow-up was 18 months (range 12 to 24 months). Conclusions: According to this preliminary study, the hydroxyapatite bone cement appears to hold great promise as a grafting alloplastic material for sinus floor Augmentations. Its main advantage is its ability to provide initial stability required for osseointegration and proper implant location and parallelism. Further clinical and histological studies are required before it can be recommended for routine use in sinus lift procedures. J Periodontol 2000;71:1187-1194.
Werner Götz - One of the best experts on this subject based on the ideXlab platform.
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Tissue reactions after simultaneous alveolar ridge Augmentation with biphasic calcium phosphate and implant insertion—histological and immunohistochemical evaluation in humans
Clinical Oral Investigations, 2015Co-Authors: Anton Friedmann, Kirsten Gissel, Anna Konermann, Werner GötzAbstract:Objectives Simultaneous lateral Augmentation and implant placement is considered as standard procedure in deficient edentulous ridges in oral implantology. Histological studies monitoring osteogenesis after application of alloplastic bone substitutes in humans are scarce. Bone formation upon simultaneous Augmentation with biphasic calcium phosphate (BCP) and implantation was histologically investigated after 6 months in situ. The results of this secondary analysis are reported tempting to ascribe specific observations to uneventful submerged healing or compromised healing of soft tissues including occurrence of dehiscences and premature graft exposure. Materials and methods Histology of biopsies from lateral, crestal bone Augmentations using alloplastic BCP comprising seven sites with compromised, prematurely exposed healing and six sites with uneventful submerged healing was investigated for expression of osteogenic, osteoclastogenic, and angiogenic differentiation markers. Results Histology revealed alkaline phosphatase (ALP)-positive osteoblasts and immunoreactivity for osteogenic markers osteocalcin and collagen type I in biopsies with submerged healing, while inflammatory infiltrates and accumulations of multinucleated giant cells around BCP granules were observed in compromised sites. All specimens presented adequate vessel density. Multinucleated giant cells showed inconsistent staining for the osteoclast marker tartrate-resistant acid phosphatase (TRAP). Conclusions The histological findings of this study indicate an osteoconductive nature of the BCP applied. Premature exposure of the bone substitute reduced new bone formation and may bear a risk for inflammatory and foreign body reactions. Clinical relevance A predictable appositional bone formation in simultaneously augmented sites using BCP is linked to an uneventful healing process.
