Active clinical trials for "Alveolar Bone Loss"

This study designed as a randomized controlled split-mouth trial will be conducted at the Dental Clinic of the University of Valencia. The aim will be to assess differences in clinical, radiological and microbiological outcomes between implants with 2 different connections: internal hexagon and conical connection. Following the premises, to minimize the bias related to prosthetic phase and maximize the effect of connections on MBL changes, a 1abutment-1time protocol will be used. The study hypothesis is that there will be no statistically significant differences between both implant connections.

The purpose of this study is to evaluate safety and efficacy of gene-activated matrix ("Nucleostim") for regeneration of bone tissue in maxillofacial area. Patients with congenital and acquired maxillofacial defects (sockets of extracted teeth, bone defects after injuries, surgeries, excision of benign neoplasms and pseudotumors, etc.) or alveolar bone atrophy will be included into the study.

Autologous MMSCs will be isolated from oral mucosa biopsy sample and expanded in vitro.Tissue engineered construction will be created using synthetic tricalcium phosphate and autologous MMSCs. Patients will undergo sinus lift procedure with implantation of created tissue-engineered construction. This is a single arm study with no control. All patients receive cell therapy.

Comparative study for evaluation of vertical bone gain after one stage ridge augmentation with advanced platelet rich fibrin (A-PRF) and xenograft versus guided bone regeneration using collagen membrane and xenograft.

A coronectomy is often chosen over complete extraction of a lower third molar when the tooth appears to be in close proximity to the inferior dental (ID) canal, as assessed on a plain radiograph or a cone beam computer tomograph (CBCT). Following a coronectomy, the roots of the third molar may migrate in a coronal direction. This effect, along with the bone-preserving technique of a coronectomy over extraction, may provide increased bone height distal to the lower second molars, when compared to extraction. Partially erupted lower third molars, specifically those with mesio-angular impactions, are commonly associated with reduced bone height distal to lower second molars, and cause damage to the periodontal support of these neighboring teeth. It is assumed that maintenance of the impacted third molars or extraction of these teeth may compromise the periodontal status of the lower second molars. This study will investigate if coronectomy improves the bone levels, and therefore the periodontal status, of lower second molars, and may propose an indication for a coronectomy regardless of the proximity of the tooth to the ID canal. Coronectomies were first proposed as a treatment option just over thirty years ago, but there are very few long-term studies on the procedure reported in the literature. To the best of the investigator's knowledge, this will be the first randomised controlled trial comparing the bone height distal to the lower second molar following a coronectomy or extraction of the lower third molar.

ADO is a bone regeneration technique, introduced by Chin and Toth in 1996 based in a biological process used for regenerate and consolidate bone between two bone segments obtained after osteotomy.These segments have been gradually separated by the process of distraction. ADO can be performed both horizontally (AHDO) and vertically (AVDO).

The study was designed to assess the effectiveness of conservation ridge preservation (horizontal and vertical dimension) after tooth extraction with and without combination of bone substitutes based on synthetic (calcium sulfate mixed with phosphate.

Background: Melatonin (N-acetyl-5-methoxy-tryptamine) is an indoleamine synthesized and secreted by the pineal gland and other organs, such as the retina, bone marrow, and intestines in a circadian pattern. Some authors claimed that Melatonin induces bone formation, increase bone density, and bone implant contact. According to animal and human studies the melatonin can be used topically during implant placement to increase bone implant contact and reduce marginal bone loss. Purpose: The aim of this study was to evaluate the effect of the topical administration of melatonin on osseointegration of dental implants and in minimize marginal bone loss. Materials and Methods: Twenty single-piece endosseous implants (Dentium Co, Korea) will use to restore missing lower teeth from canine to first molar area. The study will be split-mouth technique, each patient serve as his own control (served into 2 groups), the study side (topical application of melatonin in the implant side), and the control side (no melatonin in the other implant side of the same patients).The primary and secondary stability of dental implant will be evaluated by periotest M device and measure bone level as baseline immediately after implant placement and after 6 months follow up by CBCT.

More than 2 million French people suffer from the widespread disability of edentulism, with large consequences on function, nutrition, aesthetics and well-being. Complete denture is a common therapeutic strategy. The immediate complete denture technique consists in placing the denture in the same clinical session as last anterior teeth extractions. With this technique, aesthetic and function are immediately reintroduced and the patient is never left toothless or without any denture. After teeth extractions, alveolar healing process leads to ridge resorption with bone volume modifications and reduction in height and width. However ridge bone volume is an essential factor in removable denture stability. With implantology as an alternative prosthetic strategy, ridge volume is also a most important factor to place dental implants in a situation close to previous dental roots position. In order to preserve bone volume, a current alternative strategy proposes to place bone substitute materials in tooth sockets after extraction. This strategy was never evaluated with the immediate complete denture technique. Hypothesis: A new strategy associating immediate complete denture and bone substitute material is more effective than conventional immediate complete denture in a bone preservation perspective.

To overcome the disadvantage of complex morphology and availability of less favorable support to retention of graft and clot stabilization in 1-, 1-2-wall periodontal defects, it was hypothesized that placement of CPS putty having the property of being easily moldable and shaped along with decortication would provide better healing outcome as compared to decortication alone in 1-, 1-2-wall periodontal defects. Therefore with this rationale, the present study is carried out to evaluate the treatment outcomes of decortication with and without use of CPS putty in 1- wall, 1-2-wall periodontal defects.