View clinical trials related to Bone Resorption.
Filter by: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.
Patients with spinal cord injury have a high prevalence of osteoporosis due to chronic skeletal unloading. Recently, various treatment drugs for osteoporosis have been developed. In particular, romosozumab, a sclerostin inhibitor, has been reported to have a high therapeutic effect as an inhibitor of bone resorption while promoting bone formation. However, there are a few research concerning sclerostin of spinal cord injuries patients. Therefore we want to analyze the change of sclerostin as well as factors indicating bone formation and absorption marker in spinal cord injury patient.
A single-centre randomised controlled pilot study involving 12-24 healthy adult patients for investigating dental extraction socket healing with and without plasma rich in growth factors (PRGF) taking place during early days of healing (days 1, 3, 7, 15, 30) and relating the healing to clinical and histological outcomes after 90 days of healing. Healing will be investigated by means of various non-invasive imaging technologies (e.g. laser scanners, thermal cameras, laser cameras) in addition to conventional technologies (e.g. bone core biopsy, 3D xray images). At 90 days of healing, dental implants will be placed in the healed sockets and implants will be restored and followed up until 12 months after connecting the prosthesis to the implant (e.g. implant crown). Dental implant outcomes (e.g. survival, success) will also be evaluated.
The aim of this study is to test the hyaluronic acid hydrogel impact on the healing acceleration of xenogenic bone substitutes used in ridge preservation. Following tooth extraction, bone particles are mixed with the hyaluronic acid gel and grafted in the tooth socket. at the implant placement phase, a cone beam computer assisted tomography file is recorded in order to compare it with the baseline and a biopsy to evaluate the histological consequences.
Cycling is commonly questioned whether it provides adequate mechanical strain on bone as many elite cyclists have been found to have a low bone mass. However, it remains unclear if this is due to cycling or low energy availability. In addition, acute dietary energy restriction has been found to be accompanied by an imbalance in bone remodelling with reduced bone formation. The objective of this proposal is to examine whether short-term energy restriction leads to changes in markers of bone formation and resorption at rest and in response to cycling in young adults. Specifically, the study will examine changes in circulating bone markers in 15 males and females (ages 18-24) both at rest and following one 45-minute spinning class both before and after one week of restricted energy intake. Blood will be drawn at rest (pre-trial, fasted), and 3 times post-trial (5 min, 1h and 24h); then analysed for biochemical markers of bone formation (BAP and OPG) and resorption (CTX and RANKL) to assess the impact of energy restriction on bone at rest and in response to exercise. This innovative work has potential to make significant advances in understanding tissue growth and development in response to exercise and malnutrition.
The extracorporeal shock wave therapy (ESWT) has shown good results in bones and soft tissues of the lower and upper extremities such as: pseudoarthrosis, promoting bone formation of delayed or nonunion fractures, tendinopathies, fascitis and even in vascular pathologies. The investigators main hypothesis is that the application of extracorporeal shock wave therapy (ESWT) in the residual alveolar bone after an extraction of an anterior upper maxillary tooth should prevent further residual alveolar bone resorption and will enhance vital bone formation. The investigators null hypothesis is that applying extracorporeal shock wave therapy (ESWT) in the residual alveolar bone after an extraction of an anterior upper maxillary tooth has no influence in the alveolar bone remodeling process. Therefore, the investigators main objective is to evaluate the efficacy of the ESWT in the prevention of alveolar bone resorption after an extraction with a volumetric exam through computer tomographies (CT) analysis. The investigators secondary objective is to determine the effect of ESWT in the internal bone healing process of these postextraction alveolar sockets, measuring the bone density in the CT (Hounsfield units) and the histomorphometric exam. Methodology: randomized and open clinical trial with 20 patients (10 per group: with or without ESWT treatment) that comply the inclusion and exclusion criteria. In the first appointment the tooth extraction will be performed, while in the second visit (two weeks later), CT scan will be made to all patients and ESWT will be applied in the experimental group. Finally, in the third visit (ten weeks later), a new CT scan will be done and an implant will be placed in the zone taking previously a bone sample with a trephine bur. The expected results are an improvement in the quantity and quality of the alveolar bone before the implant placement.
The clinical cases in the present study described the khoury shell technique using an allograft plate and autogenous chips, for horizontal reconstruction of the anterior alveolar ridge in the esthetic zone. Without need to use autogenous bone graft techniques that are characterized by more aggressive surgery.
One in three adults in the United States suffers from obesity. Bariatric surgery is an increasingly utilized and effective treatment for obesity and obesity-related comorbidities, however, the massive weight loss associated with bariatric surgery adversely affects bone leads to an increased risk of fracture. Bisphosphonate medications, such as zoledronic acid, are used to treat bone loss in patients with osteoporosis, and this study investigates whether this medication can prevent bone loss associated with surgical weight loss procedures.
This study is designed to determine the effect of treating postmenopausal women and using non-surgical techniques on biomarkers of systemic inflammation (IL-6 ) and systemic bone resorption (C-terminal collagen cross-links, CTX).
To assess the impact of scaling and root planing on systemic inflammation and serum bone resorption markers in pre-menopausal women with periodontitis