View clinical trials related to Alveolar Ridge Preservation.
Filter by:Tooth loss is accompanied by different patterns of bone loss. Up to 50% loss of alveolar crestal bone width will likely occur 1 year after tooth loss, especially in the anterior maxilla. A great percentage of the process of alveolar bone resorption occurs within the first 3 to 6 months post-extraction. If ridge preservation is not conducted, 40%-60% of the total alveolar bone volume is lost during the first 2-3 years post-extraction, and this phenomenon has shown to continue to occur at a rate of 0.25%-0.5% loss per year. It has been proposed that ridge augmentation procedures may reduce the expected ridge reduction after tooth loss. Ridge augmentation procedures may require the use of bone grafts and non-resorbable or non-resorbable barrier membranes. The use of non-resorbable barrier membranes for ridge augmentation has the clinical disadvantage of needing a second procedure for its removal during the healing phase. Osteogen® plug (OPP) consists of a non-ceramic bone graft incorporated in type I bovine Achilles tendon collagen. OPP was first developed to serve as a one-step grafting solution for ridge preservation without the need for a barrier membrane
The objectives of the present investigation are; to compare the dimensional changes and the histological composition after the use of an allograft or xenograft and a resorbable membrane in ridge preservation in molar sites, to evaluate the influence of bone plates thickness on dimensional changes and the effectiveness of ridge preservation in limiting the need of sinus elevation.
Seven Patients who need implants to replace non-restorable teeth in the esthetic zone. Intervention Group (1): Seven extraction sockets that received the collagen matrix (Collagen cone) for alveolar ridge preservation. Comparison Group (2): Seven extraction sockets that were treated with mineralized cortico-cancellous bone allograft for alveolar ridge preservation. Outcome 1. Alveolar ridge preservation both in height and in width to improve implant success rate - The height of alveolar ridge was assessed clinically using a periodontal probe. - The width of the alveolar ridge was measured after three months after extraction using a caliper clamp. - Changes in the width and height of alveolar bone were evaluated in merged axial and sagittal views using the I-CAT superimposition system (CBCT). 2- Evaluation of newly formed bone quality was performed by histological examination and histomorphometric analysis. 3- Immuno-histochemical staining was done using polyclonal antibody to detect (BMP-2) marker of bone formation
This 14 weeks longitudinal study will be conducted from March 2018 to June 2020, with a 40 participants. No subjects has received placebo medication at any point in the research procedures. Null hypothesis: The use of L-PRF plug, in combination with non-resorbable, open barrier membrane technique to fill the extraction sockets will have no effect on the quality of the newly formed bone nor on the dimensional changes of the ridge, compared to non-resorbable, open barrier membrane technique with natural blood clot.
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.
Alveolar bone resorption following tooth extraction is unavoidable. Graft placement following extraction is recommended when considering restorative procedures afterwards. The extracted tooth was considered a clinical waste. However, it is now seen as a convenient and available source for graft material. Different protocols are applied to process the extracted tooth for obtaining the graft material and investigations are needed to assess the protocol with the best outcome.
It is well known that following the loss of a single tooth, severe hard- and soft-tissue alterations may take place within the affected site, resulting in a subsequent reduction of both vertical and horizontal ridge dimensions, often not allowing neither appropiate pontic fabrication nor correct placement of endosseous implants. Over the past 20 years, various surgical procedures, grouped under the term of "alveolar ridge preservation" (ARP), have been introduced, aiming to maintain the existing soft and hard tissue envelope as well as a stable ridge volume, simplifying subsequent treatment procedures and optimizing functional and esthetic outcomes. They have been widely tested in controlled and not controlled clinical studies with various materials and approaches, and a number of recently published systematic reviews on this topic have confirmed the efficacy of ARP in preventing post-extraction dimensional changes of alveolar ridges. After these procedures a minimum of four to six months must be awaited before implant insertion can be performed, bringing the patient compromised comfort, function and aesthetics and needing of a second surgical procedure for the implant placement. Dental implant insertion at the time of tooth extraction (type I or immediate placement) reduced the number of dental appointments, of surgeries required and the overall treatment time. Nevertheless this surgical protocol does not provide predictable outcomes, since it may contribute towards a more pronounced bone resorption during healing. Different anatomical factors, as the thickness of the buccal bone wall and the dimension of the horizontal gap, may influence the dimensional changes of the alveolar crest following immediate implant placement. Such morphological changes could lead to negative esthetic complications, such as marginal soft tissues recessions, especially when affecting the buccal side of maxillary sites in patients with a high smile line. It is unknown if immediate implant placement plus grafting materials and/or barrier membranes could influence post-extraction dimensional changes of alveolar ridges. No consensus exists on the need for bone augmentation simultaneously with immediate implant placement. Furthermore, no human study has yet compared dimensional changes of both hard and soft tissues after two different treatments: an alveolar ridge preservation technique for a subsequent implant placement, and an alveolar ridge preservation technique with an immediate implant placement.
Improved predictability and quality of bone healing after a tooth is removed is clinically relevant, in that, it improves our ability to achieve successful implant placement at edentulous sites. Currently, a variety of grafting materials and biologic agents are utilized clinically to improve bone healing and provide sufficient dimensions of bone to support a dental implant. Platelet rich fibrin (PRF) is one such product that can be used for this application. PRF is a concentrated blood product attained from the patient's own blood consisting of a natural bioscaffold with integrated growth factors capable of sustained release. Once processed, PRF is implanted back into the patient at the wound or defect site to encourage healing. The literature regarding PRF is currently dominated by heterogeneous applications of PRF for reparative and regenerative therapies without a consensus of its clinical efficacy and appropriate application. In this clinical study, PRF will be evaluated to ascertain its clinical efficacy in improving bone formation and alveolar dimensional stability after tooth extraction. A classic bone grafting material used for this purpose, freeze dried bone allograft (FDBA), will be incorporated with the PRF or compared directly to PRF alone. It is hypothesized that the natural scaffold and incorporated growth factors of PRF augmented with the solubility resistance of FDBA will function as an ideal bioscaffold to promote bone healing to a greater extent compared to PRF, FDBA, or blood clot alone.
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.
Randomized Controlled study to compare the effectiveness of two different treatment approaches using a new moldable beta-tricalcium phosphate(TCP) bone graft material in ridge preservation of an atraumatic extraction socket site compared to allograft with collagen plug.