View clinical trials related to Bone Loss.
Filter by: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.
Long bone defect (LBD) is defined as a focalized loss of bone tissue in any long bone of the upper or lower extremity. Long bone defects are a complex problem, that may arise as a complication of many different pathologies, such as trauma, tumors or infection. Whereas post-traumatic defects are the largest group. Reports estimate that there are almost 4 million bone grafting procedures worldwide per year. However, limb reconstruction in the context of a bony defect is challenging and up to date there is little evidence and treatment recommendations. In a multi-national approach, the aim of this project is to set up an international, multicenter registry to gather information and details on prevalence or incidence, current treatments, complications and outcome.
The bone loss in Parkinson's disease (PD) emerges as a non-motor symptom with motor and non-motor outcomes, such as fracture and musculoskeletal pain. Bone mineral density (BMD) is decreasing in patients with PD when compared to sex and age-matched healthy controls. The changes in BMD according to clinical subtypes of PD is unknown. The investigators are planning to compare the BMD status between the tremor dominant and postural instability and gait difficulty type of PD.
On of the main fixed prosthetic options of completely edentulous patients is the screw-retained implant supported prosthesis which was constructed on transmucosal abutments with its encountered problems such as: hardness to make it passively seated with multiple screw fracture and loosening problems and multiple encountered veneer material fracture and so there effect on patient satisfaction with multiple maintenance recalls.so, we want to try a new technique of fabrication which was proposed for reducing the problems of lack of passivity which is the intraoral luting cement technique on titanium bases with reduced screw number but, with luting cement problems as de-cementation and cement biological effects on soft tissues and bone and there effect on number of patient recall visits and maintenance and so there effect on patient satisfaction.
The aim of this study is to evaluate the healing of peri-implat tissue following surgical uncovering with the adjunctive use of Chlorohexidine (CHX) gel.
Normally, dentists do not graft the socket after extraction of teeth. When they do graft they use particulate graft devices. The purpose of this study is to examine whether coral particles of 300-450um in comparison to coral cones of 4-5mm wide and 8-10 mm long will preserve alveolar ridge of maxilla or mandible when grafted immediately after tooth extraction. The coral grafting devices are processed from Porites corals grown in aquariums, under controlled environment. The devices are cleansed and sterilized by gamma irradiation. The measurements during follow ups will be performed from CT x rays and measurements by caliber and models.The width and height measurements from follow up x rays and models. The study will be performed on 10 patients, that two parallel teeth are diagnosed to be extracted, in same patient.The data will be analysed for bone loss and compared to previous published studies. Also comparison between two devices will be performed.
In patients that received a T3 (Biomet 3I) dental implant, does the use of platform-switch concept compared to the use of platform-matched concept, refrain marginal bone loss during osseointegration phase (t=12 weeks =T1) and from then to final rehabilitation (t= placement of the final restoration = at 18 weeks=T2)
In patients that require dental implants , does performing the surgery in clean sterile field compared to aseptic field, produces more post-operatory complications, implant morbidity or patient discomfort ?