View clinical trials related to Bone Regeneration.
Filter by:16 patients with severe resorbed maxillae referred to Implantology Institute® will be submitted to full arch surgery, with simultaneous implant placement and regeneration in the aesthetic zone, with the GLAM technique. Informed consents and local ethical committee clearance will be obtained. Pre, post and 12 months' follow-up CBCT scans will be performed and 2 independent, calibrated operators will analyze the CBCT scans and mean bone values calculated. The distance from the nasopalatine canal to the center of each implant will be determined (4 different locations per patient, corresponding to implants 14; 11; 21; 24) and it will be the reference to other CBCTs. Implant length will be measured, from the neck (site 1) to the top and then a middle point will be assessed (site 2). Post-Surgical Volume (mm) will be determined from the most palatal point of cortical bone until the most buccal regenerated bone in each CBCT. Regenerated bone gain (mm) at post-op and at 1-year CBCTs will be calculated by the difference between pre and post-op or pre-op and 1 year CBCT measures, respectively. Regenerated Bone stability (%), defined as the percentage of regenerated bone at 12 months, will be calculated as the comparison between CBCT immediately after surgery and the CBCT at 12 months. Results will be presented as mean, with 95% CI.
The purpose of this study is to evaluate the bone regeneration after impacted third molar surgery on split mouth design using platelet-rich fibrin.
Purpose: The goal of guided bone augmentation is to provide an alveolar ridge of sufficient dimension to permit dental implant placement. While a wide variety of bone graft and barrier membrane products are commercially available, limited evidence exists supporting the use of one technique over another. The purpose of this study is to radiographically define the dimensional bone changes following horizontal bone augmentation using a synthetic GUIDOR® (Sunstar, Inc.) membrane. Secondary outcome measurements will include the assessment of inflammation, infection, or other wound healing complications. Participants: A total of 60 patients requiring bone augmentation of a single bound edentulous site prior to dental implant placement will be selected for this study. This is a multicenter study with 30 patients receiving treatment at each study site. Procedures (methods): Patients will be randomly allocated to receive horizontal bone augmentation with synthetic GUIDOR® membrane + freeze dried bone augmentation (FDBA), synthetic GUIDOR® membrane alone, or xenograft BioGide® membrane + FDBA. Cone beam computed tomography (CBCT) imaging will be obtained at baseline and 6 months post-operatively to assess dimensional alveolar ridge changes. Additionally, post-operative appointments at 1, 2, and 4 weeks post-grafting will be completed to assess the presence of inflammation, infection, wound dehiscence, or membrane exposure.
This study will determine if bone marrow stromal cells can be used as a graft for regeneration of bony defects. These cells have the ability to form new bone and to support the formation of blood. Stromal cells have been identified in other tissues, such as the dermis (underside of skin), spleen, thymus and fat, but it is not known whether these cells can make bone and support blood formation as well as bone marrow stromal cells. Patients undergoing surgery at Suburban Hospital in Bethesda, Maryland, in which some of the bone, dermis, spleen, thymus or fat tissue is removed may be eligible for this study. For this study, a small piece of the tissue that is removed during surgery for examination by a pathologist will be used for research. Stromal cells from the specimen will be collected and grown in the laboratory. The genes and proteins in the different cell types will be compared, and the ability of stromal cells from the different tissues to make bone and to support the formation of blood will be studied.