15 Clinical Trials for Various Conditions
This research aims to compare the effectiveness of two bone grafting materials on preserving jawbone integrity after tooth extraction. Following extraction, the jawbone surrounding the removed tooth can shrink, affecting future implant placement. By placing a bone graft material in the extraction socket, we aim to maintain adequate jawbone space for future implants. This study compares how well the mixture of vallos®f (human source bone) and Bio-Oss (animal source bone) \[test\], and vallos® only \[control\] grafting materials work. Participants with at least one tooth planned for extraction and subsequent implant placement are sought for this study. Participants will be randomly assigned to either the mixture of vallos®f and Bio-Oss (test) group or the vallos® only (control) group. Throughout the approximately 2-year study duration, participants will undergo oral exams, x-rays, surgical procedures, and follow-up visits. All participants will undergo routine tooth extraction, bone graft material placement, and dental implant placement. After the crown is placed on the implant, participants will attend follow-up visits. Participation in the study is voluntary, and the alternative is to continue routine dental care. Risks include minor discomfort from procedures such as tooth extraction and implant placement. The major benefit of participation in the study is the preservation of jaw dimensions following extraction, which will simplify the placement of a dental implant.
The primary objective of this proposed clinical trial is to provide detailed comparison and evidence of new bone formation in patients undergoing socket preservation utilizing MinerOss® X Plug with and without Striate+ Membrane to maintain ridge dimension after a tooth extraction.
Two different surgical protocols for socket preservation were compared. Soft and hard tissue outcomes were measured clinically and radiographically at baseline and six months post operatively.
The objective of this study is to investigate the use of human amnion chorion membrane (BioXclude®) as an exposed barrier in ridge preservation and whether the intentional exposure of this membrane to oral environment will adversely affect ridge healing, dimensions, and bone vitality. This is a randomized clinical study.
The advent of endosseous implant restoration has driven an increasing need for alveolar bone preservation and/or augmentation strategies. Investigations have explored the physical scaffold effects of a wide variety of bone graft materials with each graft material offering a more or less attractive surface for bone deposition. The seeding of these scaffolds with biologically active material seeks to enhance the "osteoconductive" effect by influencing the temporal or sequential steps which result in the desired end product-new bone. Alveolar socket grafts are a common example of these preservation techniques. They are an accepted procedure to maximize the retention of alveolar bone post extraction. They appear to act as a passive scaffold for clot retention and subsequent bone regeneration. The current pilot research project explores addition of a known Bioactive Agent: Platelet Derived Growth Factor (PDGF) to test its impact on healing responses. Histomorphometric assessments will be utilized on microscopic slide material derived from cores trephined as the initial step in the preparation for placement of endosseous dental implants. Outcomes measured will include: Clinical observation of healing response Microscopic measures will be * Measures of residual graft material * New bone formation and new bone contact area with graft * Measures of vascular content * Osteoclast count * Qualitative measures of other marrow components (Cells and relative fiber/ fat content, liner cell characteristics.)
The purpose of this study is to evaluate clinically, histologically and radiographically the healing of extraction sockets with Zimmer's Puros® allograft compared to creos™ (creo™ Nobel Biocare,), a low-cost allograft material, 90 days following exodontia.
The primary aims of this study are to compare, after 4 months, the clinical and histologic results of a combination demineralized/mineralized putty allograft vs. synthetic calcium phosphosilicate (CPS) putty alloplast graft utilization in socket preservation procedures. A regenerative tissue matrix membrane will be used to cover each graft lying below the flap.
Hard and soft tissue deficiencies of an alveolar ridge arise as sequelae of tooth extraction when socket preservation is not applied. In addition, extraction of posterior maxillary teeth causes pneumatization of the maxillary sinus in relation to other fixed landmarks such as the teeth. These anatomic sinus limitations and alveolar bone deficiencies are the main challenges for dental implant placement. Different bone substitutes have been used to augment bone in pneumatized maxillary sinuses. Scaffolding materials such as xenografts or synthetics substitutes have been proven to be a viable alternative. Xenografts are obtained from nonhuman species and serve as a scaffold for the formation of new bone (osteoconduction). Histologic evaluation of maxillary sinuses grafted with xenografts revealed newly formed bone to be mostly woven bone with some remodeling to lamellar bone. These histologic findings reaffirm the osteoconductive ability of xenografts when used as the sole grafting material in maxillary sinus augmentation. Xenografts appear to be an effective method for maxillary sinus grafting and demonstrate limited resorption over time. Sinuses augmented with synthetic bone substitute (SBS) also appear to successfully integrate based on recent histomorphometric studies. Vascularization and trabecular bone formation in sinuses grafted with SBS has been previously demonstrated. One type of SBS includes porous granules of bioactive and resorbable silica-calcium phosphate nanocomposite (ShefaBone). ShefaBone grafts offer a novel alternative that can potentially unite the 3 salient bone-forming properties (osteoinduction, osteoconduction, and osteogenesis). ShefaBone has unique properties including: 1) bioactivity 2) bioresorbablility, and 3) allowing for the uptake of calcium ions from the physiological solution and releasing phosphate and silicate ions which aid in bone formation. A material with such properties will substitute bone in a more controlled and effective combination that can be obtained in many clinical situations, without the disadvantages found with autograft. ShefaBone has demonstrated successful regenerative properties for bony defects. To our knowledge, there is no reported clinical studies on the use of SCPC material to graft a pneumatized maxillary sinus. This aim of this current study is to compare SCPC to commonly used xenograft material in an augmented maxillary sinus.
The purpose of this study is to compare two barrier membrane products, Cytoplast (dPTFE) and BioXclude (human amnion chorion allograft), for their relative efficacies in dental socket preservation procedures, both when the socket is filled and overfilled with freeze dried bone allograft (FDBA).
This study will be a randomized clinical trial involving a total of 24 subjects. The investigators propose to recruit subjects into 2 groups: 1) Extraction treated with xenograft bone substitute (BioOss Collagen®) + collagen dressing (HeliPlug®), 2) Extraction treated with xenograft bone substitute (BioOss Collagen®) + 3D-collagen matrix (Mucograft Seal®). All subjects recruited will have already been approved and treatment planned for extraction + implant placement by non-study personnel to avoid any potential conflict of interest. All subjects will have radiographs that show the tooth planned for extraction. Each subject will be eligible for only 1 tooth extraction + dental implant rehabilitation. After tooth extraction, subjects will receive a standard site preservation therapy consisted with xenograft bone substitute + collagen dressing or the alternative site preservation therapy consisted with xenograft bone substitute + 3D-collagen matrix. After the conventional 6-month healing period, subjects will receive a dental implant in the previous extracted site. During the dental implant procedure, a 2x5mm bone core biopsy + a 2mm gingival biopsy will be obtained from the implant site. Biopsy samples will be stored for future histological and histochemical analysis. After dental implant placement, all subjects will receive a healing abutment for soft tissue healing prior to implant restoration. During the 6-month healing time after tooth extraction and site preservation therapy, subjects will return at week-1, week-2, week-4, month-3, and month-6 for intra-oral scanning for soft tissue volumetric acquirement. Subjects will receive a Cone beam computed tomography (CBCT) prior to extraction for the baseline hard-tissue volume measurement and appropriate extraction planning and at 6-month post-extraction for volumetric measurement and appropriate implant treatment planning. Hard tissue analysis will be performed to compare linear ridge remodeling (baseline vs. 6-month healing). CBCT images will be analyzed by non-contact reverse engineering system. Soft tissue volumetric analysis will be performed to compare the soft tissue healing between BioOss Collagen + Mucograft Seal and BioOss Collagen + Collagen Dressing. Images captured with an intra-oral scanner collected at baseline, week-1, -2, -4, month-3, and month-6.
The purpose of this study is to clinically and radiographically assess whether the use of a ridge preservation technique significantly minimizes alveolar ridge resorption following tooth extraction.
This study will evaluate the effect of Leukocyte Platelet Rich Fibrin and freeze-dried bone allograft in a layered technique on the bone quantity and quality following socket grafting in preparation for endosseous implant placement. Pre (baseline)- and post-grafting (3 months) clinical as well as 2- and 3-dimensional radiographic measurements will be used to evaluate the dimensional ridge changes between sites grafted with L-PRF/FDBA layered technique vs. L-PRF/FDBA and L-PRF alone. Histological analysis will be performed by a bone biopsy taken at time of surgical re-entry (after 3 months) of grafted sites to place the dental implant and assessed for differences in new bone formation between the three types of graft.
This study will evaluate the effect of allograft bone particle size on the bone quantity and quality following socket grafting and lateral ridge augmentation in preparation for endosseous implant placement. Pre (baseline)- and post-grafting (3 months for sockets and 6 months for edentulous ridges) clinical as well as 2- and 3-dimensional radiographic measurements will be used to evaluate the differences between sites grafted with small vs. large particle sized bone allografts. Histological analysis will be performed at time of surgical re-entry of grafted sites to place the dental implants, and assessed for differences in new bone formation between the 2 types of grafts.
The goal of this project is to evaluate the influence of platelet rich fibrin (PRF) in extraction socket healing with or without particulate bone graft. The hypothesis of this study is that PRF will enhance the extraction socket healing and new bone formation when compared to extraction sockets grafted without PRF.
To compare dimensional changes in extraction socket of single rooted teeth, 6 months post extraction, when grafted with xenograft versus allograft.