View clinical trials related to Bone Atrophy.
Filter by:This study aims to evaluate and compare the quantity of the radiographic horizontal bone gain of severely deficient complete maxillary ridges reconstructed by bone block harvest from the iliac crest versus the calvarial bones
Osteoporosis is worldwide health epidemic categorized by poor bone health, primarily diagnosed by low bone mineral density, and costs healthcare systems billions every year. Athletes and exercising people who expend large amounts of energy in physical activity, or restrict diet in order to lose weight, are at risk of low energy availability. This is when an individual fails to match their exercise energy demand with a appropriate dietary intake in order to maintain optimal physiological function; which can lead to low bone mineral density, osteoporosis both early and later in life and an increased risk of injury. Runners are particularly susceptible to stress fracture in response to low energy availability due to repetitive ground impact. Research shows that as little as five days low energy availability significantly reduces bone formation, and significantly increases bone resorption, in physically active women. The ideal solution is to restore energy availability; however, this is often very difficult during periods of intense training and conflicts with the goal of weight loss. Therefore, there is a need to develop an alternative tool to protect bone health. It is critical that any exercise intervention does not further reduce energy availability as previous research shows that this accelerates bone loss rather than prevents it. Low repetition high impact jumping exercise is highly beneficial to bone health and has been shown to improve bone structure when used as a long-term intervention in energy replete states. It takes very little time to complete and uses a very small amount of energy. However, no study to date has examined the effects of such an intervention during low energy availability. The current study will investigate whether low repetition high impact jumping prevents or reduces the reduction in bone formation and the increase in bone resorption experienced during five days of low energy availability and findings will have implications on athletic and recreational training recommendations in order to protect bone health.
patients suffering from anterior maxillary horizontal bone defect the alveolar ridge will be augmented by minimally invasive tunneling technique utilizing MPM as bone graft and patients followed up for 14 weeks .
The purpose of this study is to evaluate the safety and efficacy of the gene-activated bone substitute consisting of octacalcium phosphate and plasmid DNA encoding vascular endothelial growth factor (VEGF) for maxillofacial bone regeneration. The patients with congenital and acquired maxillofacial bone defects and alveolar ridge atrophy will be enrolled.
This pilot study is aimed to reconstruct atrophied posterior alveolar mandibular ridges using biomaterial and autologous bone marrow derived stem cells (BMMSC) and to insert an implant into the new bone in a prosthetically guided position.
Bone resorption and atrophy in maxillary posterior region is due to severe periodontal disease and is consequent tooth extractions. Sinus pneumatisation can occur after tooth extraction and alveolar bone loss. Consequently, bone-reducing volume at that region is a great challenge to implantodontists. Sinus lifting surgery have been practiced since 80's and many biomaterials have been used to solve filling issues to maintain the sinus floor lifted in a position that can allow dental implants installation. Bone grafts have shown to be the best choice of filling grafts. Despite autologous bone are the gold standard filling biomaterial it is associates with great mortality and morbidity. So, bone allografts from tissue bank had been shown to be an advantageous alternative. Lyophilized or freeze tissue bone are the most common allografts but literature is poor in randomized controlled parallel clinical trials regarding those filling grafts for sinus lifting. The aim of this study is to perform a randomized controlled clinical trial comparing two bone allografts: lyophilized and freeze bone allografts from human bone tissue bank. The investigators want to verify which one can develop greater osteogenesis, if is there any difference between them regarding the architectural trabeculae formation, if there are different patterns of reabsorption and finally if is there any differences between them regarding primary and lately dental implants stability. To answer those questions the investigators propose firstly, to carry out microtomographic and histological analysis from trephine bone samples after six months of sinus lifting and grafting in healthy participants undergoing osseointegrated dental implants. Secondly, the primary and lately implant stability is going to be achieved employing Resonance Frequency Analysis (RFA).
BACKGROUND Tooth loss impairs the OHRQoL. Dental implants have expanded treatment options of edentulous patients and improved their OHRQoL, however, in the posterior maxillary sextants the possibility to place implants of desired length and diameter could be limited. lSFE and tSFE represent two surgical options to vertically enhance the available bone in the edentulous posterior maxilla. Invasivity, relevant postoperative discomfort, high costs, and long times needed for the finalization of the prosthetic rehabilitation, however, strongly limit the indications of lSFE and support the need for less traumatic procedures with similar clinical effectiveness and reduced morbidity. In 2008, the investigators proposed a user-friendly, safe, predictable and effective minimally-invasive procedure for tSFE, namely the Smart Lift technique. AIMS/OBJECTIVES The general aim of the present project is to validate the Smart Lift technique as a simplified and minimally-invasive procedure for the implant-supported rehabilitation of patients with edentulous, atrophic maxillary posterior sextants. METHODS In a multicenter RCT study design, the reconstructive (clinical) and patient-centered outcomes of tSFE performed according to the Smart Lift technique will be compared with those of conventional lSFE. EXPECTED RESULTS The Smart Lift technique should allow for a significant reduction of treatment time, post-surgery complications and costs and an increase in the satisfaction perceived by the edentulous patient with implant-supported rehabilitation, while maintaining a clinical efficacy as well as a similar or lower morbidity and discomfort when compared to lSFE. In other words, the investigators expect that more favorable risk-benefit and cost-utility ratio, as well as a better performance in terms of pain, comfort, physical, social and psychological effects of oral health, and issues concerning the OHRQoL, will be observed for the Smart Lift technique compared to lSFE. List of Acronyms (in alphabetical order) OHRQoL: Oral Health - Related Quality of Life lSFE: sinus floor elevation with a lateral approach RCT: randomized controlled trial tSFE: sinus floor elevation with transcrestal approach