8 Clinical Trials for Various Conditions
The objectives of this study are to evaluate the performance and safety of the Vantage Total Ankle System. This study will follow subjects for a period of up to 10 years post-surgery.
This investigation will be a prospective, longitudinal clinical trial to study the clinical performance of a new monolithic, 3D shaded zirconia material for computer assisted design and computer assisted machining for chairside restorations. The restorations will be evaluated for a period of up to five years. The study is called Clinical Study of a 3D Shaded Zirconia for chairside computer assisted design and computer assisted machining (CAD/CAM) chairside restorations intended to be part of the validation plan and post market follow-up of the following products: CEREC Cercon 4D, Calibra Universal +, and Prime and Bond Active.
This is a prospective observational clinical trial to evaluate the clinical performance of the Cerec Tessera prosthetic assembly on implants restored with chairside CAD/CAM-generated crowns. This investigation is intended as a Post Market Clinical Follow-up study for the product Cerec Tessera and its prosthetic assembly for implants, which will serve as a life-cycle approach to safety, backed up by clinical data and post-market monitoring.
Durability evaluation of a new material blend in the Iceform liner and Iceform sleeve.
Data on valve performance following ViV-TAVR has usually been obtained with the use of Doppler-echocardiography. However, some reports have shown significant discordances in the evaluation of mean transvalvular gradient between echocardiography and catheterization, with an overestimation of the real gradient with echo (vs. cath) in most cases. Thus, the incidence of procedural-device failure may be lower than that reported in the ViV-TAVR literature,
Subjects are being asked to participate in this study because they have an arm or leg amputation and have developed pain related to a neuroma (an ongoing localized pain related to a cut nerve ending). The investigators are studying how targeted reinnervation (TR) helps to both treat neuroma pain and to have increased prosthetic control. This surgery connects these cut nerve endings to nerves going into nearby nonfunctional muscles. This surgery was developed to allow amputees to have better prosthesis control. By chance, neuroma pain improved significantly with TR. The investigators, therefore, are conducting this clinical trial. The investigators will ask all participants to fill out a questionnaire both before and after surgery. This will help us understand how a neuroma affects the quality of life of amputee will allow us to understand how to best improve neuroma pain and prosthesis control. In order to confirm the presence and location of the neuroma before surgery, a magnetic resonance image (MRI) will be performed. Taking these pictures requires subjects to lie still for a short period of time but does not involve any invasive procedures.
The purpose of this research study is to identify reasons that cause an all-ceramic bridge to fracture which include the thickness of the bridge material, the type of bridge material and the bite force of the person. This all-ceramic bridge will be compared to a metal-ceramic bridge. The investigators are conducting this study so we can make bridges which can withstand forces in the mouth which tend to break them. The overall objective of this research is to analyze how properties of ceramic materials and different forces in the mouth interact with each other to affect the longevity of these bridges. These include fracture toughness, elastic modulus of ceramic layers and supporting substrate, core thickness, connector height, wear, loading orientation, and maximum clenching force.
The purpose of this study is to assess the safety and efficacy of a novel, tissue-engineered vascular prosthesis, the Human Acellular Vascular Graft, HAVG. The HAVG is intended as an alternative to synthetic materials and to autologous grafts in the creation of vascular access for dialysis.