View clinical trials related to Alveolar Ridge Preservation.
Filter by:the present study is to compare the amniotic chorion membrane (ACM) alone versus the amniotic chorion membrane combined with xenograft for their efficacy in alveolar ridge preservation procedures regarding volumetric changes assessed by cone beam computed tomography (CBCT).
The aim of this study is to demonstrate that new synthetic bone graft bioceramic composites (Adaptos®-Si and Adaptos®, Biomendex Oy) are able to support the preservation of the alveolar ridge and to promote bone regeneration following dental extraction. New bone graft substitutes are compared with already existing treatment principles used following dental extraction. The primary hypothesis of the study is that Adaptos®-Si granules can reach a clinical outcome superior to that of dental socket left empty after extraction. Secondary aim is that new bioceramic composites can reach a clinical outcome non inferior to the active comparator of this study (Geistlisch Bio-Oss®).
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
Alveolar preservation seek to avoid multiple surgical interventions to the patient and decrease costs to the patient. In particular, in a Brazilian population where the need for extraction is great, the development of techniques that safely allow a higher quality of rehabilitation is of paramount importance. Thus, this analysis is of great scientific and therapeutic importance. Within the above, the objective is to use an autogenous connective tissue graft in order to eliminate the need to raise the full-thickness flap and compensate for soft tissue deficiencies, which may reduce dimensional losses after extraction, in addition to reducing the cost of the technique.
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.
The hypothesis tested in this clinical trial is that a biomimetic synthetic bone graft substitute (MimetikOss, Mimetis Biomaterials) with similar properties to those of human bone can reach a clinical outcome non inferior to that of a deproteinized bovine bone matrix bone graft substitute (Bio-Oss, Geistlisch) in an alveolar ridge preservation procedure followed by implant placement in terms of bone volume changes (primary end point), bone histological observation implant stability and bone level changes (secondary end points).
Purpose of the single arm study is to clinically and histologically evaluate alloplastic in-situ hardening, moldable beta-tricalcium phosphate(TCP) bone graft material and polylactide membrane in alveolar ridge preservation following extraction of non-molar teeth with non-containable extraction sockets.